Energy and Energy Resources

What factors determine an object's kinetic energy

• it's height and mass

• its mass and speed

• its size and weight

• its speed and height

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The gravitational potential energy stored between and object and Earth depends on

• object's height and weight

• object's mass and speed

• the object's size and weight

• the object's speed and height

When a ball is thrown upward, where does it have the least kinetic energy?

• it's highest point

• it's lowest point when it is moving downward

• midway between its highest point and its lowest point.

• lowest point when moving upward

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what energy transformation occurs in the panels on this roof?

• chemical energy to thermal energy

• nuclear energy to electric energy

• radiant energy to electric energy

• sound energy to thermal energy

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According to the law of conservation of energy, which is always true?

• Almost all energy used on Earth comes from fossil fuels

• Energy can never be created or destroyed

• Nuclear energy is a renewable energy resource

• Work is done when a force is exerted on an object

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Which energy resource is being formed in the picture below?

• biomass

• geothermal reservoirs

• petroleum

• uranium

In which situation would the gravitational potential energy between you and the Earth be the greatest

• you are running down a hill

• you are running up a hill

• you stand at the bottom of a hill

• you stand at the top of a hill

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Which produces the most air pollutants?

• burning coal

• burning natural gas

• hydroelectric power plants

• nuclear power plants

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Which is an example of a renewable energy resource?

• geothermal energy

• natural gas

• nuclear energy

• petroleum

Which best describes coal?

• It burns without polluting the air

• It formed from the remains of plants

• it is a renewable energy resource

• it is the energy source used at nuclear power plants