Big Idea 12 and 13

Front

What is a force?

Back

A force is a push or pull that can cause an object to move, stop, or change direction.

Front

What does it mean for forces to be balanced?

Back

Balanced forces are equal in size but opposite in direction, resulting in no change in motion.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it is in contact with another surface.

Front

What happens when two like poles of magnets are brought together?

Back

They repel each other, causing the magnets to push away from one another.

Front

What is gravity?

Back

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

Front

What is a pull force?

Back

A pull force is a force that draws an object closer, like when you pull a chair toward you.

Front

What is a push force?

Back

A push force is a force that moves an object away, like when you push a door open.

Front

How does oil affect friction?

Back

Oil reduces friction between surfaces, making it easier for objects to slide over each other.

Front

What is the role of gravity in everyday life?

Back

Gravity keeps us grounded on Earth and affects how objects fall and move.

Front

What is an example of a situation with balanced forces?

Back

When two people pull on opposite ends of a rope with equal strength, the rope does not move.