1 st 6 Weeks Review By: Katherine Pease Questions by: Rebecca Neill

1. What is the sequence of energy transformations when heating up an oven? M: Mechanical energy turns oven knob M: Mechanical energy turns oven knob N: Chemical Energy moves hand N: Chemical Energy moves hand O: Electrical Energy enters the oven O: Electrical Energy enters the oven P: the oven heats up P: the oven heats up

1. Answer N-M-O-P N-M-O-P

2. The burning of gasoline in the cylinder of an automobile engine pushes the pistons. What will this chemical energy be transformed to?

2. Answer Mechanical energy Mechanical energy

3. As a ball bounces, kinetic energy is changed to potential energy and back again. What law explains the transfer of this energy?

3. Answer The law of the conservation of energy The law of the conservation of energy Energy can never be created or destroyed, it can only change from one form to another. Energy can never be created or destroyed, it can only change from one form to another.

4. According to the diagram, which energy transformation does the turbine fan cause the water to make electricity? See Handout for diagram

4. Answer Mechanical to Electrical Mechanical to Electrical

5. Water flowing through pipes is an example of which type of energy?

5. Answer Kinetic energy Kinetic energy Energy in motion Energy in motion

6. According to the diagram, describe the two kinds of energy involved in the energy transformations of wind energy to electricity.

6. Answer

7. Which of the tool is most useful when measuring force?

7. Answer Spring Scale Spring Scale

8. Which Newton ’ s Laws supports the movement of how the water sprinkler turns?

8. Answer Newton’s 3 rd Law of Motion Newton’s 3 rd Law of Motion For every action there is an opposite and equal reaction For every action there is an opposite and equal reaction

9. Which of the following pictures explains that radiant energy from the sun is transformed into chemical energy through the process of photosynthesis?

9. Answer D is the correct answer D is the correct answer

10. Using the diagram, what prediction can be made about the movement of object X? Object X 30 N 20 N

10. Answer Will move to the right Will move to the right 30N – 20N = Net force of 10N 30N – 20N = Net force of 10N

11. Which lever would need the least amount of effort to move the load of the log? See Handout for diagram

11. Answer G

12. According to the diagram, at which point is the kinetic energy of the car the greatest?

12. Answer B is the correct choice B is the correct choice

13. What conclusion can be made from the data graphed? See handout for information See handout for information

13. Answer Manipulated Variable is the distance from the light. Manipulated Variable is the distance from the light. Graph shows that the closer to the light, the more oxygen is produced Graph shows that the closer to the light, the more oxygen is produced

14. Place an “ E ” in the diagram above to show the effort force be applied to move the wheelbarrow full of dirt. See outline for See outline fordiagram

14. Answer E

15. Place an “ R ” in the diagram above to show where the resistance located when the wheelbarrow moves dirt?

15. Answer R

16. The root tip is able to force its way by acting like which simple machine?

16. Answer Wedge Wedge A wedge is two inclined planes connected at a point to form an object that can cut / split things apart A wedge is two inclined planes connected at a point to form an object that can cut / split things apart

17. What variable would most affect how far the balloon travels?

17. Answer Air Resistance Air Resistance

18. Which variable would be supported by Newton ’ s Second Law to increase the acceleration of the box? See Handout for Diagram 12 kg Force 80N

18. Answer Increase the amount of Force being applied Increase the amount of Force being applied Force=mass x acceleration Force=mass x acceleration

19. Which letter identifies the resistance in this pulley system? See Handout for diagram See Handout for diagram

19. Answer B

20. Which of Newton ’ s Laws is supported by the Texas Seatbelt Law for Minors?

20. Answer Newton’s First Law of Motion Newton’s First Law of Motion An object in motion will stay in motion, an object at rest will stay at rest until an unbalanced force acts upon it. An object in motion will stay in motion, an object at rest will stay at rest until an unbalanced force acts upon it.

If these boys are applying a balanced amount of force, who will win?

21. answer Neither, they are Not Moving Neither, they are Not Moving Both sides are applying an equal amount of force Both sides are applying an equal amount of force

Which of Newton’s laws explain how a rocket takes off?

22. answer Newton’s 3 rd Law, Newton’s 3 rd Law, action = opposite reaction action = opposite reaction For every action there is an equal and opposite reaction For every action there is an equal and opposite reaction