Physical Science Lessons 1-4 Proof of Mastery Review

Front

What is gravitational energy?

Back

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

Front

How does mass affect gravitational energy?

Back

The greater the mass of an object, the more gravitational energy it has when elevated to a certain height.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as 1/2 mv², where m is mass and v is velocity.

Front

Where is kinetic energy greatest on a roller coaster?

Back

Kinetic energy is greatest at the bottom of the highest hill on a roller coaster.

Front

What happens to an object's energy when it is deformed?

Back

When an object is deformed (compressed or stretched), it stores potential energy due to the change in shape.

Front

What is the relationship between speed and kinetic energy?

Back

Kinetic energy increases with the square of the speed; doubling the speed quadruples the kinetic energy.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state, such as height in a gravitational field.

Front

How does height affect gravitational energy?

Back

The higher an object is above the ground, the more gravitational energy it has.

Front

What is the formula for calculating gravitational potential energy?

Back

Gravitational potential energy (PE) is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is the difference between kinetic and potential energy?

Back

Kinetic energy is energy of motion, while potential energy is stored energy based on position or state.