Variables in Science. Name : Class : Date : 1. Which variable do we change on purpose? b) Dependent. a) c) Independent Control

Transcription

1 NOS Quiz 2 Revision 2 Variables in Science Name : Class : Date : 1. Which variable do we change on purpose? Control 2. Which variable responds to the change and gets measured? Control 3. Which variable stays the same through the entire experiment? Control 4. Which variable can be found on the X-AXIS? 5. Which variable can be found on the Y-AXIS? 6. same amount of sun exposure and soil. She measures them after 5 weeks. What is the IV? Energy drink Growth of plant Same type of plant

2 7. same amount of sun exposure and soil. She measures them after 5 weeks. What is the DV? Energy drink Growth of plant Same type of plant used 8. Cooper wants to see the number of study hours impacts his test grades. He studies for 1 hour for his first science test, 2 hours for his second science test, and 3 hours for his third science test. His science grade improves each time! What is the IV? Number of study hours Test grade 9. Cooper wants to see the number of study hours impacts his test grades. He studies for 1 hour for his first science test, 2 hours for his second science test, and 3 hours for his third science test. His science grade improves each time! What is the DV? Number of study hours Test grade 10. Miss Hotchkiss wants to see if promising free time increases quiz score. She promises Class "A" 25 minutes of free time if they get a 90% or higher on their quiz. She promises Class "B" 10 minutes of free time if they get a 90% or higher on their quiz. She promises Class "C" no free time at all. What is the IV? Amount of free time Quiz score promised 11. Miss Hotchkiss wants to see if promising free time increases quiz score. She promises Class "A" 25 minutes of free time if they get a 90% or higher on their quiz. She promises Class "B" 10 minutes of free time if they get a 90% or higher on their quiz. She promises Class "C" no free time at all. What is the DV? Amount of free time Quiz score promised

3 12. Miss Hotchkiss wants to see if promising free time will impact quiz score. She promises Class "A" 25 minutes of free time if they get a 90% or higher on their quiz. She promises Class "B" 10 minutes of free time if they get a 90% or higher on their quiz. She promises Class "C" no free time. Who is the CONTROL GROUP? Class A and B Class A and C Class C only weeks. What is the IV? The same amount of Plant growth water, sunlight, and soil The amount of music exposure the plant's received weeks. What is the DV? The amount of music Plant growth exposure the plant's received The same amount of water, sunlight, and soil

4 15. 5 weeks. Which group is the CONTROL GROUP? The music group The group that did not get exposed to music weeks. Which group is the EXPERIMENTAL GROUP? The music group The group that did not get exposed to music weeks. All of the following are CONTROLLED VARIABLES except: The Beyonce song The amount of water The species of plant d) The exposure to music 18. Miss Hotchkiss guessed plant growth would increase if they were exposed to music. This is her: Problem Observation Hypothesis d) Experiment

5 19. Miss Hotchkiss wondered if plant growth would increase if they were exposed to music. This is her: Problem Observation Hypothesis d) Experiment 20. If the data is flawed or inaccurate, a good scientist should... Communicate the results Modify the experiment Ignore the flawed results 21. Noah noticed it was raining outside. He made an: Hypothesis Observation Problem d) Conclusion 22. same amount of sun exposure and soil. She measures them after 5 weeks. Plant A (Redbull plant) was 100 cm and Plant B (water plant) was 150 cm. What should her CONCLUSION be? Redbull not only gives you wings, it makes plants grow! The plant given water grew more than the plant given energy drink. The plant given energy drink grew more than the plant given water.

6 23. same amount of sun exposure and soil. She measures them after 5 weeks. Plant A (Redbull plant) was 100 cm and Plant B (water plant) was 150 cm. How could she make this test BETTER? Multiple plants will give her more accurate data and evidence She should not give them the same sun exposure She should not give them the same amount of soil d) Plant A should be a different type of plant then Plant B