UNIQUE SCIENCE ACADEMY
|
|
|
- Pearl McCoy
- 5 years ago
- Views:
Transcription
1 1 (a) UNIQUE SIENE EMY Test (Unit 10-11) Name :... Paper: Physics ate :... lass: 1 Time llowed: 5Minutes Maximum Marks: 25 Theory Section: [Total 16 Marks] What do you understand by the term speccific latent heat of vaporisation? [2] (b) In an experiment to find the specific latent heat of vaporisation of water, it took J of energy to evaporate 15 g of water that was originally at 100. second experiment showed that 600 J of energy was lost to the atmosphere from the apparatus during the it took to evaporate 15 g of water. alculate the specific latent heat of vaporisation of water that would be obtained from this experiment. 2 specific latent heat = [] [Total:5] Fig.2.1 shows apparatus that a student uses to make an estimate of the specific heat capacity of iron. thermometer electrical heater iron block Fig. 2.1
2 2 (a) The power of the heater is known. State the four readings the student must take to find the specific heat capacity of iron [4] (b) Write down an equation, in words or in symbols, that could be used to work out the specific heat capacity of iron from the readings in (a). [1] (c) (i) Explain why the value obtained with this apparatus is higher than the actual value [1] (ii) State one addition to the apparatus that would help to improve the accuracy of the value obtained [1] [Total:7] boiler contains 5 kg of water at 22. The specific heat capacity of water is 4200 J / (kg ). (i) alculate the thermal energy (heat) needed to raise the of the water from 22 to its boiling point. (ii) energy =...[2] The water in the boiler is heated with a 2600 W immersion heater. alculate the minimum for the heater to bring the water to its boiling point. =...[2] [Total:4]
3 1 MQ SETION: [Total 9 Marks] The table shows the melting points and boiling points of four substances. Which substance is a liquid at a room of 20 o? substance melting point / o boiling point / o substance is heated at a steady rate. It changes from a solid to a liquid, and then to a gas. The graph shows how its changes with. R S Q P Which parts of the graph show a change of state taking place? P and R Q and R P and S Q and S The graph shows the change in of a material as it is heated. Which part on the graph shows when the material is boiling?
4 4 4 1kg of water and 1 kg of aluminium are heated to the same and then allowed to cool in a room. Why does the aluminium cool more quickly than the water? luminium contracts more than water. luminium does not evaporate but water does. luminium has a higher thermal capacity than water. luminium has a lower thermal capacity than water. 5 \ The graph shows how the of hot liquid wax changes with as the wax is allowed to cool. t which labelled point on the graph are both liquid wax and solid wax present? sample of a solid is heated for 12 minutes and its noted every minute. The results are shown in the table. / min / How should the sample be described at the end of the 12 minutes? all solid in the process of melting all liquid in the process of boiling
5 5 7 student carries out an experiment to find the melting point of wax. The graph shows how the of the wax changes as it cools. / X melting point of wax Y Z Which statement is correct? t X the drops more slowly than at Z. t Y all the wax is solid. t Y thermal energy is being given out by the wax. t Z the wax molecules are not moving. Ice is taken from a freezer and left in a room. The ice melts and eventually the water reaches room. Which energy transfers take place? energy transfer during melting energy transfer after melting from ice to room from water to room from ice to room from room to water from room to ice from room to water from room to ice from water to room 9 n ice-cube has a mass of 7.50 g. The ice-cube is at 0. Heat from the surroundings reaches the ice-cube at an average rate of 1.25J / s. How long does it take for all of the ice to melt? (specific latent heat of fusion of ice = J / g) 5.5 s 55.5 s 2000 s 120 s 5 MQ nswer Sheet
UNIQUE SCIENCE ACADEMY
UNIQUE SIENE EMY Test (Unit 11-12) Name :... Paper: Physics ate :... ode: 5054 lass: II Time llowed: 35Minutes This document consists of 5 printed pages. Maximum Marks: 25 T [Total 21 Marks] heory Section:
IGCSE PHYSICS GRADE 11 TERM 1 ASSESSMENT BOOKLET
PHYSICS IGCSE PHYSICS GRADE 11 TERM 1 ASSESSMENT BOOKLET 2013-2014 STS Page 1 of 44 PHYSICS PHYSI1101 ASSESSMENT TASK COVER PAGE Topic STS Performance Criteria Assessment event Date Time Thermal Physics
MARIYA INTERNATIONAL SCHOOL AL-JUBAIL L-8 PHYSICS WORKSHEET(Heat & energy )
MARIYA INTERNATIONAL SCHOOL AL-JUBAIL L-8 PHYSICS WORKSHEET(Heat & energy ) 1 Name... (a)fig. Shows a thermometer with a range of 10 C to 50 C. Explain what is meant by (i) the sensitivity of a thermometer,......
UNIQUE SCIENCE ACADEMY
1 (a) UNIQUE SIENE EMY Test (Unit 12) Name :... Paper: Physics ate :... lass: 1 Time llowed: 35Minutes Maximum Marks: 25 Theory Section: [Total 16 Marks] Fig. 1.1 shows a beaker in which coffee is served
Estimate the energy stored in unit gram of the food in J per gram.
NAME : F.5 ( ) Marks: /70 FORM FIVE PHYSICS REVISION TEST on HEAT Time Allowed: 70 minutes This paper consists of two sections. Section A (50 marks) consists of the structure-type questions, and Section
UNIQUE COLLEGE OF COMPUTER SCIENCES General Certificate of Education Ordinary Level
UNIQUE OLLEGE OF OMPUTER SIENES General ertificate of Education Ordinary Level PHYSIS Paper 1 Multiple hoice lass II2 III2 995054/11 January 2011 91 hour dditional Materials: Multiple hoice nswer Sheet
VISUAL PHYSICS ONLINE THERMODYNAMICS WHAT HAPPENS WHEN SOMETHING IS HEATED? LATENT HEAT
VISUAL PHYSICS ONLINE THERMODYNAMICS WHAT HAPPENS WHEN SOMETHING IS HEATED? LATENT HEAT 1 HEATS OF FUSION AND VAPORISATION From the equation containing the specific heat, it seems that we can keep on transferring
(a) (i) Through which part of the house is most heat lost? How can the heat loss through the windows be reduced? ...
Q1. The diagram shows where heat is lost from a house that is not insulated. (a) (i) Through which part of the house is most heat lost? (ii) How can the heat loss through the windows be reduced? (b) A
liquid heating The density of the liquid changes as its temperature increases. This causes energy to be transferred throughout the liquid.
1 liquid is heated in a beaker. liquid heating The density of the liquid changes as its temperature increases. This causes energy to be transferred throughout the liquid. How does the density change and
ST. GABRIEL S SECONDARY SCHOOL Lower Secondary Science Chapter 7 Transfer of Thermal Energy
ST. GRIEL S SEONRY SHOOL Lower Secondary Science hapter 7 Transfer of Thermal Energy Worksheet 7.1 Name : _Suggested nswers ( ) lass : ate : Section : Multiple hoice Questions 1 Two similarly-sized blocks,
Particle Model Questions 1
Particle Model Questions 35 Questions Name: Class: Date: Time: Marks: Comment s: Q. Figure shows solid ice on a car s rear window. Figure Captive cookies/istock/thinkstock The glass window contains an
UNIQUE SCIENCE ACADEMY
UNIQUE SIENE AAEMY Test (Unit 1) Name :... Pap er: Physics ate :... ode: 5054 lass: I Time Allowed: 5Minutes Maximum Marks: 5 Theory Section: 1 [Total 19 Marks] 1 (a) escribe an experiment to show which
2 Thermal Physics. Thermal Physics. 1. Simple kinetic molecular model of matter 2. Thermal properties 3. Transfer of thermal energy
2 Thermal Physics 1. Simple kinetic molecular model of matter 2. Thermal properties 3. Transfer of thermal energy 1. A swimmer climbs out of a swimming pool on a warm, dry day. Almost immediately he begins
Unit THE NATURE OF HEAT
Unit 5.0 - THE NATURE OF HEAT Heat is a form of energy, in the form of infrared radiation. Heat from the sun travels through space at the speed of 300,000,000 m/s. Upon arriving on earth, much of the radiant
HEAT What are some sources of Heat?
HEAT Activity 1. Rub your hands quickly against each other. 2. Then quickly place them onto your face. 3. Describe what you feel. Your hands feel warm. 4. Why does it feel warm? It feels warm as HEAT has
Q1. The diagram shows the design of a solar cooker. The cooker heats water using infrared radiation from the Sun.
Q. The diagram shows the design of a solar cooker. The cooker heats water using infrared radiation from the Sun. (a) Why is the inside of the large curved dish covered with shiny metal foil? () (b) Which
The equation which links current, potential difference and resistance is:
Q1.An electrical circuit is shown in the figure below. (a) The current in the circuit is direct current. What is meant by direct current? Tick one box. Current that continuously changes direction. Current
I. C O N T E N T S T A N D A R D S
Introductory Physics, High School Learning Standards for a Full First-Year Course I. C O N T E N T S T A N D A R D S and radiation between objects or regions that are at different temperatures. 3.1 Explain
Different energy sources can be used to generate electricity.
Q1. Electricity is a useful form of energy. (a) Different energy sources can be used to generate electricity. Give one advantage and one disadvantage (other than cost) of using each energy source to generate
Science Test Revision
John Buchan Middle School Science Test Revision 5D Changing State 52 min 50 marks Name John Buchan Middle School 1 Level 3 1. Changes (a) Kim and Juan change the way some things look. The pictures below
NAME:... HEATING EFFECT OF ELECTRIC CURRENT. Page 1
NAME:... HEATING EFFECT OF ELECTRIC CURRENT www.kcpe-kcse.com Page 1 1. A car heater has two identical heating elements. The car battery can send 15000 C through the circuit in an hour. (i) What is the
7 In the process of convection, heat energy is transferred C D E. 9 Boiling water and ice can exist at the same time in a test tube.
TOPI 9 Transfer of Thermal Energy 1 How may heat be transferred through a vacuum? by convection only by radiation only by conduction only by convection and radiation only E by conduction. convection and
Use each of the terms in the box to explain how heat is lost from inside a house through the window. conduction convection radiation
Q1. The diagram shows a side view of a double-glazed window. (a) Use each of the terms in the box to explain how heat is lost from inside a house through the window. conduction convection radiation..................
Thermal Energy Study Guide
Goal 1 Thermal Energy Study Guide Name: Hour Define the following in your own words: 1. Conductor - a material that allows heat to flow through it easily Two examples - metal pot, fork 2. Insulator - a
Level 1 Physics, 2016
90939 909390 1SUPERVISOR S Level 1 Physics, 2016 90939 Demonstrate understanding of aspects of heat 2.00 p.m. Tuesday 15 November 2016 Credits: Four Achievement Achievement with Merit Achievement with
A student investigated how much energy from the Sun was incident on the Earth s surface at her location.
A student investigated how much energy from the Sun was incident on the Earth s surface at her location. She put an insulated pan of water in direct sunlight and measured the time it took for the temperature
When both switches are on, the heater works at the high power setting. What is the power of the heater when it is switched to the high power setting?
1 (a) The diagram shows two switches on a room heater. The heater has three power settings. The power produced by two of the settings is given in the table. Setting Power in kw Low 0.5 Medium 1.5 High
energy from hot flame [3] [2]
![energy from hot flame [3] [2]](/thumbs/79/79286354.jpg "energy from hot flame [3] [2]")
1 This question is about energy transfer and how it is used in cooking. (a) Steve heats a pan of water on his cooker. Look at the diagram. water aluminium base energy from hot flame (i) Explain how the
Q1. The diagram shows an experiment to find out what happens to infrared waves when they strike different surfaces.
Q1. The diagram shows an experiment to find out what happens to infrared waves when they strike different surfaces. (a) The water in the black tube gets hotter than the water in the shiny tube. Choose
ISLAMAYA ENGLISH SCHOOL
1 (a) Some water is poured onto a plastic table-top, forming a puddle. The same volume of water is poured into a plastic dish, which is placed alongside the puddle. This is illustrated in Fig. 7.1. water
Science 7. Unit 3. Heat and. Temperature
Science 7 Unit 3 Heat and Temperature Name:_ Class:_ TOPIC 1 REINFORMCEMENT Putting Thermal Energy to Work Goal Develop ways to classify natural and manufactured structures. BLM 3-1 When do you use thermal
FS 231: Final Exam (5-6-05) Part A (Closed Book): 60 points
Name: Start time: End time: FS 231: Final Exam (5-6-05) Part A (Closed Book): 60 points 1. What are the units of the following quantities? (10 points) a. Enthalpy of a refrigerant b. Dryness fraction of
HVAC Fundamentals & Refrigeration Cycle
HVAC Fundamentals & Refrigeration Cycle Change of State of Water & the Refrigeration Cycle Change of State Water The Basic Refrigeration Cycle Types of DX Systems The Chilled water System The Cooling Tower
Determination of the enthalpy of vaporization of liquids
Related concepts Enthalpy of vaporization, enthalpy of condensation, enthalpy of sublimation, vapour pressure, entropy of vaporization, Clapeyron-Clausius equation, Trouton s rule, laws of thermodynamics,
Changes of State. Lesson 1
Lesson 1 Changes of State If all the ice in the world melted, the oceans would rise by more than 65 meters (215 feet)! This iceberg is melting in Paraiso Bay, Antarctica. What happens to ice when it melts?
6 th Grade Conduction, Convection, and Stored Heat Energy
6 th Grade Conduction, Convection, and Stored Heat Energy Summary: Students feel convection by melting an ice cube in their hands. They layer cold water, room temperature water, and hot water in a clear
Describe the movement of the particles of helium gas inside the balloon (2)
The figure below shows a balloon filled with helium gas. (a) Describe the movement of the particles of helium gas inside the balloon............. (2) (b) What name is given to the total kinetic energy
3B Heat, Light and Sound
Heat, Light and Sound Heat, light and sound are forms of energy that have many applications in our lives. Heat Heat is a form of energy When petrol burns in a car engine it causes the gases in the cylinders
Fundamentals of Heat Transfer
Fundamentals of Heat Transfer State basic laws of heat transfer Estimate heat transfer rates by different modes Use the concept of thermal resistance to solve steady state heat transfer problems State
Heat: Activity: Friction: Temperature: What is Heat? Names. What is heat? How would you define or describe it?
Names What is Heat? What is heat? How would you define or describe it? Heat: Heat is thermal energy flowing from warmer to cooler objects. Thermal energy is the total energy of the particles of matter.
ME 410 MECHANICAL ENGINEERING SYSTEMS LABORATORY MASS & ENERGY BALANCES IN PSYCHROMETRIC PROCESSES EXPERIMENT 3
ME 410 MECHANICAL ENGINEERING SYSTEMS LABORATORY MASS & ENERGY BALANCES IN PSYCHROMETRIC PROCESSES EXPERIMENT 3 1. OBJECTIVE The objective of this experiment is to observe four basic psychrometric processes
Thermal Properties and Temperature
Thermal Properties and Temperature Question Paper 5 Level IGCSE Subject Physics Exam Board CIE Topic Thermal Physics Sub-Topic Thermal Properties and Temperature Paper Type Alternative to Practical Booklet
Transfer of Heat. There are three ways in which heat is transferred from one body to another. These are
Transfer of Heat In the precious chapter you have learnt that heat flows from a body at a higher temperature to a body at a lower temperature, but how does this transfer take place? You will find the answer
Thermal Energy Worksheets
Thermal Energy Worksheets Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) To access a customizable version of this book, as well as other interactive content, visit
Four of the appliances, including the fan heater, are designed to transform electrical energy into heat.
Q1. The pictures show six different household appliances. (a) Four of the appliances, including the fan heater, are designed to transform electrical energy into heat. Name the other three appliances designed
Science Test: Heat Energy
Science Test: Heat Energy Name: Date: Section 1: Vocabulary Select the word below that makes the statement correct. Then write the word in the blank. freeze conductor heat friction melt evaporate radiation
6. Within an internal combustion engine, the can-shaped component that moves up and down the cylinder
Student ID: 22133336 Exam: 986052RR - Heat When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you hit Submit Exam. If you need to exit before
Freezing (solid), Melting (liquid), Evaporation (gas) Study Presentation INCLUDING WATER STATE CHANGE GRAPHS
Freezing (solid), Melting (liquid), Evaporation (gas) Study Presentation INCLUDING WATER STATE CHANGE GRAPHS Lesson Vocabulary 1. Melting- solids gain heat and change into liquids 2. Freezing- liquids
The table gives information about some ways of reducing the energy consumption in a house. Installation cost in. Fit a new hot water boiler
## (a) The table gives information about some ways of reducing the energy consumption in a house. Method of reducing energy consumption Installation cost in Annual saving on energy bills in Fit a new hot
Lecture 7 Water in the Atmosphere
Key words Radiation imbalance (heat transport by atmosphere and ocean currents) Radiational cooling, radiation inversion, thermal belt Specific heat, controls of temperature Diurnal range of temperature
CLASS 7 ABOUT THIS PRACTICE TEST ANSWERING THE QUESTIONS EQUIPMENT ALLOWED IN THIS PRACTICE TEST ESTIMATED TIME FOR THIS PRACTICE TEST
LSS 7 OUT THIS PRTIE TEST This Practice Test has 15 questions. It has been designed to give you an idea of the main IT assessment. NSWERING THE QUESTIONS Each question has four options. hoose the EST answer
Assessment P1-2H. 30 minutes. 30 marks. Page 1 of 14
Assessment P1-2H 30 minutes 30 marks Page 1 of 14 Q1. Warm air inside a house contains water in the form of a gas. The water condenses onto cold surfaces such as windows. This leaves liquid water on the
IFE Level 2 Certificate in Fire Science, Operations and Safety (VRQ)
IFE Level 2 Certificate in Fire Science, Operations and Safety (VRQ) Qualification Number: 500/5925/7 Introduction The IFE Level 2 Certificate in Fire Science, Operations and Safety (VRQ) has been developed
Describe the movement of the particles of helium gas inside the balloon
Q1.The figure below shows a balloon filled with helium gas. (a) Describe the movement of the particles of helium gas inside the balloon............. (b) What name is given to the total kinetic energy and
ME 410 MECHA ICAL E GI EERI G SYSTEMS LABORATORY
ME 410 MECHA ICAL E GI EERI G SYSTEMS LABORATORY MASS & E ERGY BALA CES I PSYCHROMETRIC PROCESSES EXPERIME T 3 1. OBJECTIVE The object of this experiment is to observe four basic psychrometric processes
Heat can change into other forms of energy and vice versa. Heat is measured in the unit of energy, the joule (J).
ExamLearn.ie Heat Heat Heat has the ability to do work or move something. Thus, heat is a form of energy. Heat can change into other forms of energy and vice versa. Heat is measured in the unit of energy,
ME 354 THERMODYNAMICS LAB THE REFRIGERATION CYCLE
Due date for write-up: March 2, 2012 1 ME 354 THERMODYNAMICS LAB THE REFRIGERATION CYCLE INTRODUCTION: The attached figure shows schematically the refrigeration unit located in the Heat Transfer Lab, E3-2108.
Changes of State pg K
Changes of State pg. 48-53 K Key Terms Melting melting point freezing vaporization Evaporation boiling boiling point condensation Sublimation 48K Picture an ice cream cone on a hot summer day. The ice
P1.1H Infrared Radiation Questions Higher
P1.1H Infrared Radiation Questions Higher 25 minutes 25 marks Page 1 of 11 Q1. A wood burning stove is used to heat a room. Photograph supplied by istockphoto/thinkstock The fire in the stove uses wood
REFRIGERATION CYCLE Principles of Mechanical Refrigeration Level 2: Cycle Analysis
REFRIGERATION CYCLE Principles of Mechanical Refrigeration Level 2: Cycle Analysis Technical Development Program Technical Development Programs (TDP) are modules of technical training on HVAC theory, system
What percentage of infra red is absorbed by the glass? increases. does not change. decreases. Blacksurfaces are poor emitters of infra red radiation.
Q1. (a) Infra red radiation can be reflected, absorbed and transmitted by glass. (i) What percentage of infra red is absorbed by the glass?... (ii) Complete the following sentence by drawing a ring around
LESSON CLUSTER 9 Explaining Condensation and the Water Cycle
LESSON CLUSTER 9 Explaining Condensation and the Water Cycle Lesson 9.1: Boiling and Condensation You have been studying changes of state for quite a while now. You have studied melting, freezing or solidifying,
Use words from the list to complete the following sentences. Words may be used once, more than once, or not at all.
Q1. The diagram shows an experimental solar-powered bike. A battery is connected to the solar cells. The solar cells charge up the battery. There is a switch on the handlebars. When the switch is closed,
S2 Science. Heat. Homework Booklet
S2 Science Heat Homework Booklet 1 1. The graph below shows how most substances cool after being taken away from the source of heat. Answer these questions about the graph a. where is the heat loss the
Heat and temperature. Making a thermometer
Heat and temperature A bout four hundred years ago, it would have been impossible to tell the temperature of the air, the water or any other substance. That s because there was no such thing as a thermometer
Pressure Enthalpy Charts
Pressure Enthalpy Charts What is a p-h Diagram? A p-h diagram is a diagram with a vertical axis of absolute pressure and a horizontal axis of specific enthalpy. "Enthalpy is the amount of energy in a substance
Page 22a. What heats up faster, sand or water? Which one has a greater specific heat capacity?
Page 22a Have weather map face-up on table Objective: We will describe the three types of heat transfer and explain their roles in Earth processes. Warm-up: What heats up faster, sand or water? Which one
Changes of phase usually involve a transfer of energy Evaporation
Changes of phase usually involve a transfer of energy. The four possible forms of matter solid, liquid, gas, and plasma are called phases. Matter can change from one phase to another. The phase of matter
Activity Sheet Chapter 1, Lesson 1 Molecules Matter
Activity Sheet Chapter 1, Lesson 1 Molecules Matter Name: Date: Question to investigate- Is the speed of water molecules different in hot and cold water? Hot water in a clear plastic cup Cold water in
(4)... (1) Suggest one feature of the black fuel effect lumps which make them efficient at transferring energy....
Q1. The diagram comes from a leaflet about a coal effect gas fire. It shows how air circulates through the fire. (a) Explain in detail why the air travels from C to A. (4) (b) The black fuel effect lumps
Q1. The table gives information about some methods of conserving energy in a house.
Q1. The table gives information about some methods of conserving energy in a house. Conservation method Installation cost in Annual saving on energy bills in Cavity wall insulation 500 60 Hot water tank
Station Four Guide thermal energy and Motion Energy
Part One: The Hanger Station Four Guide thermal energy and Motion Energy What energy transformations take place when you bend a metal hanger back and forth? Piece of thin metal hanger 1. Feel the metal
Activity Heat Transfer
Name: Hr: Activity 3.3.6 Heat Transfer Introduction Heat is the transfer of thermal energy. Thermal energy exists when the atoms or molecules in a substance are in motion and vibrate. The atoms possess
Math. The latent heat of fusion for water is 144 BTU s Per Lb. The latent heat of vaporization for water is 970 Btu s per Lb.
HVAC Math The latent heat of fusion for water is 144 BTU s Per Lb. The latent heat of vaporization for water is 970 Btu s per Lb. Math F. to C. Conversion = (f-32)*(5/9) C. to F. Conversion = C * 9/5 +
LESSON CLUSTER 8 Explaining Evaporation and Boiling
LESSON CLUSTER 8 Explaining Evaporation and Boiling Lesson 8.1: Where Did the Water Go? You see things drying out around you all the time; puddles dry up; clothes dry on a clothesline or in a dryer; your
Meltdown: Heat Conduction in Different Materials
Meltdown: Heat Conduction in Different Materials You probably have lots of firsthand experience with melting. If you hold a piece of chocolate in your hand too long, it melts into a sticky mess. If you
Warm Up Go to Spiral.ac and answer the quickfire question. Class Codes: B1/2 - XGJVV B3/4 - YBPUW A7/8 - BPHHN
Warm Up Go to Spiral.ac and answer the quickfire question. Class Codes: B1/2 - XGJVV B3/4 - YBPUW A7/8 - BPHHN Phase Change material melting point ( C) nitrogen -210 mercury -39 water 0 lead 327 glass
1. What are the scales of temperature? What are the formulas to convert among them? Fahrenheit, Celsius, Kelvin
-* Name Period 1. What are the scales of temperature? What are the formulas to convert among them? Fahrenheit, Celsius, Kelvin 2. Define Heat and temperature. Heat transfer of thermal energy from hotter
Q1. Ionisation energies provide evidence for the arrangement of electrons in atoms. (b) (i) State the meaning of the term first ionisation energy.
Q1. Ionisation energies provide evidence for the arrangement of electrons in atoms. (a) Complete the electron configuration of the Mg + ion. 1s 2... (b) (i) State the meaning of the term first ionisation
PRESSURE-ENTHALPY CHARTS AND THEIR USE By: Dr. Ralph C. Downing E.I. du Pont de Nemours & Co., Inc. Freon Products Division
INTRODUCTION PRESSURE-ENTHALPY CHARTS AND THEIR USE The refrigerant in a refrigeration system, regardless of type, is present in two different states. It is present as liquid and as vapor (or gas). During
5. Transfer of thermal energy
5. Transfer of thermal energy A bird can reduce the heat loss from its body during cold weather by fluffing up its feathers. What are the processes of heat transfer? Conduction Convection Radiation transfer
ST. FRANCIS SECONDARY SCHOOL HALF-YEARLY EXAMINATION 2016-2017 FORM 1 SCIENCE TIME: 1.5 HOURS Name: Class: Read instructions carefully and answer ALL questions in the spaces provided using Black/Blue ink.
MET 200 Lecture 5: Water. Fall Weather and Birds. Radar Story. Previous Lecture Seasons and Diurnal Cycle. Outline Seasons Diurnal Cycle 8 PM 9 PM
MET 200 Lecture 5: Water Fall Weather and Birds Radar Story 8 PM 9 PM 1 Previous Lecture Seasons and Diurnal Cycle 2 12 PM 7 AM Outline Seasons Diurnal Cycle 3 4 Lecture 5 Water The Importance of Water
9. ENERGY PERFORMANCE ASSESSMENT OF HVAC SYSTEMS
9. ENERGY PERFORMANCE ASSESSMENT OF HVAC SYSTEMS 9.1 Introduction Air conditioning and refrigeration consume significant amount of energy in buildings and in process industries. The energy consumed in
Fundamentals of Heat Transfer
Fundamentals of Heat Transfer State basic laws of heat transfer Estimate heat transfer rates by different modes Use the concept of thermal resistance to solve steady state heat transfer problems State
Introduction to HVAC. American Standard Inc Air Conditioning Clinic TRG-TRC018-EN
Introduction to HVAC Agenda Psychrometrics Human Comfort Heat Transfer Refrigeration Cycle HVAC Terminology HVAC Systems Introduction to HVAC Psychrometrics 2000 TRG-TRC002-EN Properties of Air Dry-bulb
TEACHER BACKGROUND INFORMATION Water Cycle
TEACHER BACKGROUND INFORMATION Water Cycle INTRODUCTION: The water cycle transports water from oceans to the atmosphere, the land, and back to the ocean through the physical processes of evaporation, condensation,
Global Warming and the Hydrological Cycle
Global Warming and the Hydrological Cycle Climate Change Projections Wet regions will become wetter Dry regions will become drier Precipitation will occur less frequently Precipitation will be more intense
Section 9. Comparing Energy Consumption: More for Your Money. What Do You See? What Do You Think? Investigate. Learning Outcomes
Section 9 Comparing Energy Consumption: More for Your Money Section 9 Comparing Energy Consumption: More for Your Money What Do You See? Learning Outcomes In this section, you will Measure and compare
Chapter 2.3: Steam System
Part I: Objective type Questions and Answers Chapter 2.3: Steam System 1. For industrial process heating, the best quality of steam is: a) dry saturated steam b) superheated steam c) wet steam d) high
Title: Measurement of dryness fraction by Separating Calorimeter,
Title: Measurement of dryness fraction by Separating Calorimeter, Throttling Calorimeter, Separating and Throttling Calorimeter. Learning objectives: 1. Intellectual skills: a) Measurement of Dryness fraction
For an ideal gas mixture, Dalton s law states that the sum of the partial pressures of the individual components is equal to the total pressure.
1 PSYCHROMETICS Psychrometry is the study of the characteristics of moist air. We will see soon that evaporation of moisture from the skin can have a significant impact on thermal comfort. The rate of
PLANT TRANSPIRATION IN THE CLOUD FOREST Transpiration Introduction
PLANT TRANSPIRATION IN THE CLOUD FOREST Transpiration Introduction Transpiration is the loss of water from the leaves of plants. Stomates are tiny pores on the surface of leaves that allow for the passage
YOUR BASIC REFRIGERAION SYSTEM SVASD MAY 26, 2011
YOUR BASIC REFRIGERAION SYSTEM SVASD MAY 26, 2011 Today s Goal Is to Understand the basic function of a refrigeration system Refrigeration The concept of refrigeration went unchanged for 2000+ years until
Institute of Aeronautical Engineering (Autonomous) Dundigal, Hyderabad B.Tech (III II SEM) MECHANICAL ENGINEERING
Institute of Aeronautical Engineering (Autonomous) Dundigal, Hyderabad- 500 043 B.Tech (III II SEM) MECHANICAL ENGINEERING REFRIGERATION AND AIR CONDITIONING Prepared by, Dr. CH V K N S N Moorthy, Professor
HOW TO OPERATE THE REFRIGERATOR COMPARTMENT
HOW TO OPERATE THE REFRIGERATOR COMPARTMENT Switching on the appliance 1. Plug in the appliance 2. When the appliance is plugged in, it is normally factory set to a temperature of 5 C. Adjusting the temperature
LYOTRAP FREEZE-DRYING MACHINE OPERATING INSTRUCTIONS
LYOTRAP FREEZE-DRYING MACHINE OPERATING INSTRUCTIONS User Manual for Lyotrap Freeze-Drying Machine The precise answer to controlled environments 2 User Manual For Lyotrap Freeze-Drying Machine Manual Ref.
mysugarcase / MedAngel Test
mysugarcase / MedAngel Test OBJECTIVES 1. Do medications stored in the inlay of a mysugarcase combi risk freezing, when an ice pad is inserted in the ice pad pocket? 1.1 What is the minimum temperature
TEMPERATURE ACTIVITY
SCIENCE: Heat MATHEMATICS: Reading a thermometer AIM: Students understand the relationship between heat and density. BACKGROUND: How does a hot air balloon work? As the air inside the balloon becomes hotter
1 Why Do Changes in State Take Place? / What Is Boiling? / What Is Evaporation?
tates of Matter: oiling, vaporation and ondensation ame: onsolidation orksheet 1 hy Do hanges in tate ake lace? / hat s oiling? / hat s vaporation? 1. nswer the questions below. a. hat are the three states