Energy Test

The ____ energy of an object increases with its height.

• gravitational potential
• chemical potential

An object that has kinetic energy must be ______.

• lifted above Earth's surface
• in motion.

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

• conservation of energy
• construction of energy

The kinetic energy of an object increases as its _________ increases

• height
• speed

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

• 80 N
• 10 N

When a ball is dropped it bounces until it eventually stops. Why does this happen?

• Some of the ball’s energy is converted to other forms, such as thermal and sound.
• Some of the ball’s energy is lost.

The diagram shows four locations in a temperature field. The temperature of each location is given in degrees Celsius. Heat energy will normally flow from:

• D to A
• C to B

Energy stored in food would be considered

• chemical potential
• kinetic

Conduction is the transfer of heat energy by______

• direct particle contact
• electromagnetic waves

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

• friction
• television