Physical Science Benchmark #3 Klipp

The ____ energy of an object increases with its height.

• chemical potential

• kinetic

• thermal

• gravitational potential

When water at 10°C is heated to 20°C its kinetic energy

• decreases

• increases

• stays the same

• is unaffected

The law of ____ states that energy in a system can change forms but can never be created or destroyed.

• conservation of energy

• consecration of energy

• conversion of energy

• construction of energy

The kinetic energy of an object increases as its _______ increases.

• height

• speed

• volume

• potential energy

How much force is required to lift a rock a vertical distance of 8 m if 80 J of work were done?

• 80 J

• 80 N

• 10 J

• 10 N

As the time required to do a given amount of work decreases, the power developed ____.

• decreases

• increases

• stays the same

• is unaffected

Energy stored in food would be considered

• chemical potential

• kinetic

• thermal

• gravitational potential

Conduction is the transfer of heat energy by

• direct particle contact

• electromagnetic waves

• density differences

• movement through a vacuum

An example of an energy conversion from kinetic to thermal energy would be

• friction

• television

• flower

• gravity

11. Green plants convert light energy from the sun into ____ during photosynthesis.

• A. gravitational potential energy

• B. chemical potential energy

• C. thermal energy

• D. mechanical energy