24-25 Energy Study Guide #11-15

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It depends on the mass of the object and its velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, an object at a height has gravitational potential energy.

Front

At which point does a skateboarder have the most kinetic energy?

Back

The skateboarder has the most kinetic energy at point 2, where they are moving the fastest.

Front

What is the sequence of energy transformation in windmills?

Back

Wind energy → mechanical energy → electrical energy.

Front

Why does a hand-held video game feel warm after use?

Back

Some of the energy from the batteries is changed to heat, causing the game to feel warm.

Front

What happens to the temperature of water in two cups left in a room?

Back

The temperatures of the water in both cups will move towards equilibrium, with the cooler water warming up and the warmer water cooling down.

Front

Where is gravitational potential energy lowest for a cyclist riding down a hill?

Back

The gravitational potential energy is lowest at point Z, the lowest point of the hill.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of kinetic and potential energy in an object that is used to do work.

Front

What is thermal energy?

Back

Thermal energy is the internal energy of an object due to the kinetic energy of its molecules, often felt as heat.