Energy Test Review

Front

What is gravitational potential energy?

Back

Gravitational potential energy (GPE) is the energy an object possesses due to its height above the ground and its mass. It is calculated using the formula GPE = mass × gravity × height.

Front

What is thermal energy transfer by convection?

Back

Thermal energy transfer by convection occurs when warmer, less dense fluid rises and cooler, denser fluid sinks, creating a circulation pattern. This process is common in liquids and gases.

Front

What is the formula for calculating work?

Back

Work is calculated using the formula: Work = Force × Distance. It is measured in joules (J).

Front

What is power in terms of work?

Back

Power is the rate at which work is done, calculated using the formula: Power = Work / Time. It is measured in watts (W).

Front

What happens to gravitational potential energy (GPE) and kinetic energy (KE) when an object falls?

Back

As an object falls, its gravitational potential energy decreases while its kinetic energy increases, conserving the total mechanical energy.

Front

What is kinetic energy?

Back

Kinetic energy (KE) is the energy an object has due to its motion, calculated using the formula KE = 1/2 × mass × velocity².

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy. When work is done on an object, energy is transferred to that object, resulting in a change in its energy state.

Front

What is the unit of energy?

Back

The unit of energy is the joule (J).

Front

What is the unit of power?

Back

The unit of power is the watt (W), which is equivalent to one joule per second.

Front

How do you calculate the force required to lift an object?

Back

The force required to lift an object can be calculated using the formula: Force = Work / Distance.