1. Practicing Variables A Self-Check

2. If you get at least 6 hours of sleep, you will do better on tests than if you get less sleep.  Identify the  Independent variable  Dependent variable  A controlled variable

3. If you get at least 6 hours of sleep, you will do better on tests than if you get less sleep.  The Independent Variable  Hours of sleep

4. If you get at least 6 hours of sleep, you will do better on tests than if you get less sleep.  The Dependent Variable  How well you do on tests

5. If you get at least 6 hours of sleep, you will do better on tests than if you get less sleep.  A Controlled Variable  Type of test  Subject tested  Amount of studying

6. How does studying with music affect student test scores?  Identify the  Independent variable  Dependent variable  A controlled variable

7. How does studying with music affect student test scores?  The Independent Variable  Studying with or without music

8. How does studying with music affect student test scores?  The Dependent Variable  Test scores

9. How does studying with music affect student test scores?  A Controlled Variable  Type of music  Amount of time studying

10. Does the amount of salt in water affect how long it will take an egg to boil?  Identify the  Independent variable  Dependent variable  A controlled variable

11. Does the amount of salt in water affect how long it will take an egg to boil?  The Independent Variable  Amount of salt in water

12. Does the amount of salt in water affect how long it will take an egg to boil?  The Dependent Variable  Time it takes egg to boil

13. Does the amount of salt in water affect how long it will take an egg to boil?  A Controlled Variable  Amount of water in pot  Temperature of stove

14. How do different types of exercise affect how well you can remember?  Identify the  Independent variable  Dependent variable  A controlled variable

15. How do different types of exercise affect how well you can remember?  The Independent Variable  Types of exercise

16. How do different types of exercise affect how well you can remember?  The Dependent Variable  How well you remember

17. How do different types of exercise affect how well you can remember?  A Controlled Variable  Duration of exercise  What you trying to remember

18. A biologist wants to see how water temperature affects health of sea turtles.  Identify the  Independent variable  Dependent variable  A controlled variable

19. A biologist wants to see how water temperature affects health of sea turtles.  The Independent Variable  Water temperature

20. A biologist wants to see how water temperature affects health of sea turtles.  The Dependent Variable  Sea turtle health

21. A biologist wants to see how water temperature affects health of sea turtles.  A Controlled Variable  Species of sea turtle  Environmental conditions in water  Starting health of sea turtles