PMA 2 Science Review

Front

What happens to the amount of force needed to lift an object when its weight increases?

Back

The amount of force needed will be greater.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other, such as the Earth pulling us down.

Front

How does gravity change as you move away from the Earth?

Back

Gravity gets weaker as you travel farther from the surface of Earth.

Front

What happens to astronauts in orbit around Earth?

Back

Astronauts can float because Earth's gravity is not as strong in orbit.

Front

What is energy transfer?

Back

Energy transfer is the process of energy moving from one place or object to another.

Front

What type of energy does a toaster convert when plugged in?

Back

A toaster converts electrical energy to heat energy.

Front

What is a balanced force?

Back

A balanced force occurs when the total force acting on an object is 0 N, meaning the object does not change its motion.

Front

What happens to an object when the forces acting on it are balanced?

Back

The object is not moving or it continues to move at a constant speed.

Front

What is light energy?

Back

Light energy is a form of energy that can be absorbed, reflected, or bent by different materials.

Front

What are the three ways light can interact with materials?

Back

Light can be absorbed, reflected, or bent.