4th Grade - Forces

Front

What pulls a ball back to earth?

Back

Gravity is the force that pulls objects toward each other, such as a ball being pulled back to Earth.

Front

What happens when two boys pull with the same amount of force?

Back

They will not move at all because the forces are balanced.

Front

Why is it harder to get down a hill?

Back

Friction is the force that opposes motion, making it harder to move down a hill.

Front

If an object is not moving, the forces acting upon it are _____________?

Back

Balanced forces are equal in size and opposite in direction, resulting in no movement.

Front

What is a force?

Back

A force is any push or pull that can make an object move, stop, change speed, or change direction.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, caused by the contact between surfaces.

Front

What is gravity?

Back

Gravity is a natural force that attracts two bodies toward each other, like the Earth and an object.

Front

What are unbalanced forces?

Back

Unbalanced forces are forces that are not equal and opposite, causing an object to move.

Front

What is motion?

Back

Motion is the change in position of an object over time.

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the direction of the force.