8th Physical Science Review

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces come into contact with each other.

Front

What happens to the force of friction when surfaces are rough?

Back

The force of friction increases when surfaces are rough, making it harder for objects to slide over each other.

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected.

Front

How does distance affect the strength of a magnetic field?

Back

As magnets get farther apart, the strength of their magnetic fields gets weaker.

Front

What is the role of gravity in motion?

Back

Gravity is a force that pulls objects toward each other, affecting their motion and weight.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is an example of an unbalanced force?

Back

An unbalanced force occurs when one force acting on an object is greater than the opposing force, causing the object to move.

Front

What is the formula for calculating force?

Back

Force (F) = mass (m) × acceleration (a).

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state.