1. Energy Review

2. Explain the difference between kinetic and potential energy
Explain the difference between kinetic and potential energy. Kinetic energy is energy of MOTION. Potential energy is stored energy in an object that is not moving.

3. Identify two things that can cause KE to increase
Identify two things that can cause KE to increase. Increase in speed (velocity). Large mass

4. Identify two things that affect gravitational potential energy
Identify two things that affect gravitational potential energy. Height Mass

5. KINETIC OR POTENTIAL ENRGY?
REVIEW:
KINETIC OR POTENTIAL ENRGY?

6. If both of these balls are traveling down a bowling lane at the SAME speed, which one would have more kinetic energy? Support your answer. Ball A because it has greater mass.

7. Which skier will have a greater potential energy. Support your answer
Which skier will have a greater potential energy? Support your answer. Skier 1 because skier 1 has greater height.

8. At which two points on the pendulum, is the pendulum experiencing the greatest potential energy? A and D

9. Which of the following is an example of kinetic energy?
A car not moving
Water falling off a dam
A rock resting on a ledge
A person sitting in a chair

10. Which of the following increases when a metal spring is stretched horizontally?
Potential energy
Kinetic energy
Gravitational potential energy
Electrical energy

11. What happens to the kinetic energy and gravitational potential energy of a ball during free fall?
GPE and KE both increase.
GPE and KE both decrease.
GPE decreases and KE increases.
GPE increases and KE decreases.

12. Mechanical Chemical Electrical Thermal Thermal Mechanical Chemical
Identify the source of energy used (mechanical, thermal (heat), electrical, chemical, nuclear) 1. Moving river water 2. Food 3. Lightening 4. Produced as a result of friction 5. Oven 6. Roller coaster 7. Battery 8. Hot iron 9. Coal 10. Stored in an atom’s nucleus
Mechanical
Chemical
Electrical
Thermal
Thermal
Mechanical
Chemical
Thermal
Chemical
Nuclear

13. A bicycle rider ate breakfast before the ride
A bicycle rider ate breakfast before the ride. Which energy transformation occurred during the bike ride?
Kinetic to chemical energy
Chemical to kinetic energy
Kinetic to nuclear energy
Nuclear to kinetic energy

14. A song is playing on the radio
A song is playing on the radio. Which best describes the change in the flow of energy?
Electrical energy  light energy
Electrical energy  sound energy
Sound energy  light energy
Sound energy electrical energy

15. Which device produces mechanical energy?
A battery
A light bulb
An electric motor
A solar cooker

16. Explain the difference between renewable and nonrenewable resources
Explain the difference between renewable and nonrenewable resources. Renewable resources are energy sources that can be replaced as quickly as it is used. Nonrenewable resources cannot be replaced by natural processes as quickly as they are used.

17. Identify some types of fossil fuels. Natural Gas Petroleum Coal

18. Renewable Nonrenewable Renewable Renewable Renewable Nonrenewable
Identify the following energy sources as renewable or nonrenewable.
Solar
Natural Gas
Geothermal energy
Wind
Hydroelectricity
Fossil fuels
Coal
Biomass
Petroleum
Renewable
Nonrenewable
Renewable
Renewable
Renewable
Nonrenewable
Nonrenewable
Renewable
Nonrenewable

19. Describe the advantages and disadvantages of nuclear energy.
Power plants could still produce electricity after coal and oil become scarce
Do not produce air pollutants & CO2
Disadvantages:
A meltdown can cause a nuclear explosion that releases radiation into the environment
Water used to cool power plants are dumped into rivers and streams  kill organisms

20. Describe the advantages and disadvantages of wind energy.
Does not burn fossil fuels
No pollution
Low costs
Disadvantages:
No wind  no energy

21. Describe the advantages and disadvantages of solar energy.
Does not burn fossil fuels
Do not produce air pollutants & CO2
Disadvantages:
Expensive

22. Describe the advantages and disadvantages of hydroelectricity.
Does not burn fossil fuels
Do not produce air pollutants & CO2
Disadvantages:
Habitat destruction

23. Describe the advantages and disadvantages of geothermal energy
Does not burn fossil fuels
Do not produce air pollutants & CO2
Disadvantages:
Not all areas are suitable for geothermal energy.
High startup costs.

24. Describe the advantages and disadvantages of biomass.
Does not burn fossil fuels
Fuels produced by biomass are clean-burning.
Available throughout the world.
Disadvantages:
Expensive to build biogas plant.
Biogas plants require space  possible habitat destruction.