Energy CP Test

The ​ (a)   energy of an object increases with its height.

• gravitational potential
• chemical potential
• thermal
• kinetic

Tags

Nature of Energy

An object that has kinetic energy must be

• lifted above Earth's surface

• in motion

• at rest

• changing direction

The law of ​ (a)   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

Tags

Conservation of Energy

The kinetic energy of an object increases as its ​ (a)   increases.

• speed
• height
• volume
• potential energy

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Nature of 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

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Work and Power

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

• Some of the ball’s energy is lost.

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

• All of the ball’s energy is eventually converted to potential energy when the ball stops bouncing.

• All of the ball’s energy is eventually converted to kinetic energy when the ball stops bouncing.

The diagram to the right 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

• B to D

• B to C

Tags

Thermal Energy

Energy stored in food would be considered

• chemical potential

• kinetic

• thermal

• gravitational potential

Tags

Conservation of Energy

Conduction is the transfer of heat energy by

• direct particle contact

• electromagnetic waves

• density differences

• movement through a vacuum

Tags

Thermal Energy

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

• friction

• television

• flower

• gravity

Tags

Conservation of Energy