Energy Transfer Review

Front

What is energy transfer?

Back

Energy transfer is the process of moving energy from one object or system to another, such as when a moving object collides with a stationary one.

Front

What type of energy transformation occurs when riding a bike?

Back

The transformation is from chemical energy (from food) to mechanical energy (used to pedal the bike).

Front

Why does a bike take longer to stop at higher speeds?

Back

At higher speeds, the bike and rider have more kinetic energy, which requires more energy to stop.

Front

What does kinetic energy depend on?

Back

Kinetic energy depends on the mass of the object and the square of its velocity (KE = 1/2 mv²).

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically related to its height.

Front

When does a roller coaster have the most gravitational potential energy?

Back

A roller coaster has the most gravitational potential energy at the top of the highest point.

Front

What is the relationship between speed and kinetic energy?

Back

As speed increases, kinetic energy increases exponentially because it is proportional to the square of the speed.

Front

What happens to energy when a marble hits another marble?

Back

The kinetic energy from the moving marble is transferred to the stationary marble, causing it to move.

Front

What is an example of energy transformation in a light bulb?

Back

In a light bulb, electrical energy is transformed into light energy and thermal energy.

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.