Science Test: Heat Energy

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1 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 conduction convection insulator temperature Celsius faster heat transfer heat energy 1. is the amount of thermal energy in an item. 2. is the measure of thermal energy or how hot or cold something is. 3. is the energy of movement of tiny particles of matter 4. The force that works against the movement of two objects that are in contact with each other is. This movement can create heat. 5. is the movement of heat by direct contact between particles of matter. 6. A material that heat travels through easily is a (an). 7. A material that does not let heat travel through it easily is a (an). 8. is the movement of heat through gases and liquids by the movement of these particles. 9. The movement of heat in the form of electromagnet waves is. 10. means to change from a solid to a liquid. This occurs when ice is heated. 11. means to change from a liquid to a gas. This occurs when water is boiled. 12. is a metric unit of measure used to indicate temperature. 13. means to change to a solid. This occurs when water is frozen. 14. When heat is added to particles, they move. 15. Conduction, convection and radiation are all forms of, or movement of heat from one object to another.

2 Section 2: Science Concepts Place each word in the correct list. wood, steel, copper, plastic, wool, iron 16. Good conductors 17. Good insulators 18. Julie made some oatmeal for breakfast. It was too hot to eat, so she put some cold milk in it. Why does her oatmeal get colder? a. Heat from the milk is lost to the oatmeal b. Heat from the oatmeal is lost to the milk c. The milk gives the oatmeal more volume d. The milk makes the oatmeal taste better 19. Mack is going skiing in Colorado during winter break. What should he pack to take with him to ensure he will be dressed appropriately for the cold weather? a. Black sweater, wool slacks, cotton mittens, cotton ski cap b. White tee shirt, blue jeans, leather gloves, baseball hat c. Black sweater, khaki shorts, skis, ski cap d. Winter coat, orange dress shirt, black slacks, hat 20. How do toasters, hair dryers, irons and other appliances work? a. Moving water makes heat b. Heat makes electric current c. Electric current make heat d. Electric current makes water move 21. A campfire can be used to roast marshmallows. Fire is an example of which form of energy? a. Electrical energy b. Geothermal energy c. Solar energy d. Heat energy 22. Mark was at a picnic on a hot summer day. He had taken a cooler filled with ice and drinks on the picnic. Some of his friends asked him to play kickball. He was so excited when he left the picnic area to play kickball; he left the lid to the cooler open. He played kickball for almost an hour, and then returned to his picnic. Describe what Mark found when he returned to the picnic area. 23. Courtney wants to buy a set of pots for her Mom s birthday. She found one set that has stainless steel handles, and one set that has wooden handles. Which would be the best set for her to buy? Explain.

3 24. Explain why people wear more dark colors in the winter, and lighter colors in the summer. 25. Draw the three states of water and describe how heat is added or removed to create each of these states. \

4 Science Test: Heat Energy Answer Key Section 1: Vocabulary 1. Heat is the amount of thermal energy in an item. 2. Temperature is the measure of thermal energy or how hot or cold something is. 3. Heat energy is the energy of movement of tiny particles of matter 4. The force that works against the movement of two objects that are in contact with each other is friction. This movement can create heat. 5. Conduction is the movement of heat by direct contact between particles of matter. 6. A material that heat travels through easily is a (an) conductor. 7. A material that does not let heat travel through it easily is a (an) insulator. 8. Convection is the movement of heat through gases and liquids by the movement of these particles. 9. The movement of heat in the form of electromagnet waves is radiation. 10. Melt means to change from a solid to a liquid. This occurs when ice is heated. 11. Evaporate means to change from a liquid to a gas. This occurs when water is boiled. 12. Celsius is a metric unit of measure used to indicate temperature. 13. Freeze means to change to a solid. This occurs when water is frozen. 14. When heat is added to particles, they move faster. 15. Conduction, convection and radiation are all forms of heat transfer, or movement of heat from one object to another.

5 Section 2: Science Concepts 16. Good conductors steel, copper, iron 17. Good insulators wood, plastic, wool 18. Julie made some oatmeal for breakfast. It was too hot to eat, so she put some cold milk in it. Why does her oatmeal get colder? a. Heat from the milk is lost to the oatmeal b. Heat from the oatmeal is lost to the milk c. The milk gives the oatmeal more volume d. The milk makes the oatmeal taste better 19. Mack is going skiing in Colorado during winter break. What should he pack to take with him to ensure he will be dressed appropriately for the cold weather? a. Black sweater, wool slacks, cotton mittens, cotton ski cap b. White tee shirt, blue jeans, leather gloves, baseball hat c. Black sweater, khaki shorts, skis, ski cap d. Winter coat, orange dress shirt, black slacks, hat 20. How do toasters, hair dryers, irons and other appliances work? a. Moving water makes heat b. Heat makes electric current c. Electric current make heat d. Electric current makes water move 21. A campfire can be used to roast marshmallows. Fire is an example of which form of energy? a. Electrical energy b. Geothermal energy c. Solar energy d. Heat energy 22. Mark was at a picnic on a hot summer day. He had taken a cooler filled with ice and drinks on the picnic. Some of his friends asked him to play kickball. He was so excited when he left the picnic area to play kickball; he left the lid to the cooler open. He played kickball for almost an hour, and then returned to his picnic. Describe what Mark found when he returned to the picnic area. Answers will vary. Sample response: The ice in the cooler will have begun melting, or may be completely melted. The cooler will contain water in place of the melted ice. 23. Courtney wants to buy a set of pots for her Mom s birthday. She found one set that has stainless steel handles, and one set that has wooden handles. Which would be the best set for her to buy? Explain. Answers will vary. Sample response: She should by the pans with the wooden handles. Since wood is an insulator, it will keep the handles from getting to hot and her mom is least likely to get burned.

6 24. Explain why people wear more dark colors in the winter, and lighter colors in the summer. Answers will vary. Sample response: Dark colors absorb more heat from the sun, so this will help you keep warmer when you are outside in the winter. Light clothes absorb less heat from the sun, so this will keep you from getting too hot in the summer. 25. Draw the three states of water and describe how heat is added or removed to create each of these states. water in a glass or lake Water is a liquid when it is not too cold or too hot. Ice cube Water is a solid when it is frozen. Water in a pot with steam coming out or a lake with evaporation present from the sun Water is a vapor when it is very hot. For example when water boils, the water becomes steam.

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