Unit 4 review

1. Unit 4 review Pay attention, the test is tomorrow, these questions might be on the test. Do your best.

2. Energy from the sun is called________. • Thermal • Radiant • Chemical • newton

3. 2. When the roots grow down this is positive for ______ • Hydrotropism • Phototropism • Geotropism • thigmotropism

4. 3. Something that starts a reaction is called a _________ Thigmotropism Stimulus Chemical change newton

5. What is the stimulus for thigmotropism Water Light Touch gravity

6. 5. When a plant begins to look like it is dying, wilt, this is because lack of water which causes weak ____________. Geotropism Sun Energy Turgor pressure

7. Bob moves a desk with a force of 3 newtons, and he moves it 9 meters. How much work did bob do?

8. Bob does 32 joules of work moving his van 8 meters. What was the FORCE THAT BOB USED WHEN MOVING HIS VAN?

9. Work = force x distance 30 joules of work 10 newtons of force ? distance

10. Force is measured in _________ Mass Grams Newtons joules

11. If Jon is moving his fishing pole he is doing work. True false

12. John is fishing at the lake, he stands on the bank and moves his fishing pole, sits down and waits quietly for the fish to attack his hook. Which part of this story is NO WORK occuring?

13. How do you know that work is being done? It has mass It remains stationary It is rigid It moves

14. In geotropism, the roots grow down and the leaves grow up, this is a positive response to what stimulus? Sunlight Gravity Osmosis water

15. Which instrument would you use to measure the mass of an object? Spring scale Graduated cylinder Triple beam balance Beaker

16. A spring scale measure force in what unit? Joules Newtons Meters ounces

17. If one ramp is 90 degrees and the other ramp is 30 degrees, which one are you going to exert more force on in order to move the box? 90 degrees 30 degrees

18. John is from out of town and doesn’t know much about force and motion. John asks the question, CAN YOU APPLY A FORCE AND NOT GET ANY WORK DONE? Explain

19. When the liver was added to the hydrogen peroxide the temperature increased creating _________ energy Chemical Radiant Osmosis thermal

20. An example of phototropism is when the plants turn to the sun light. This example is a ____________ response for the stimulus sunlight.

21. If an unbalanced force acts on the vehicle, then the vehicle is going to_________ Not move Move Mass grams

22. If the sandwich is sitting on the counter and it is still then it is said to be_________ Not balanced Balanced Thigmotropism Newtons

23. W = F X D Work is force x distance What is the formula for finding Newtons?

24. W= f x d Work is force x distance Work is measured in Joules. What is the formula for finding distance?

25. A tree growing around a piece of barbed wire is an example of _________ Geotropism Thigmotropism Phototropism hydrotropism

26. The plants leaves turn toward the sun, while its roots grow down into the soil looking for water. What is a positive response for hydrotropism?

27. Can friction change depending on the type of surfaces and the weight of the object?

28. What is a spring scale? What does it measure?

29. What is the law of intertia?