Term 2 Benchmark Review - PS2.1-PS2.5

Front

What is force?

Back

A push or pull that can change the motion of an object.

Front

What does it mean for forces to be balanced?

Back

Forces are balanced when they are equal in size and opposite in direction, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

Forces are unbalanced when they are not equal, causing a change in motion.

Front

What is gravitational force?

Back

The force of attraction between two objects due to their mass.

Front

How does mass affect gravitational force?

Back

The greater the mass of an object, the stronger the gravitational force it exerts.

Front

What is the role of friction in motion?

Back

Friction is a force that opposes motion between two surfaces in contact.

Front

What is the purpose of a paperclip in a paper airplane?

Back

To add weight and help the airplane fly longer distances.

Front

What happens to the center of a rope when forces are unbalanced?

Back

The center of the rope will move towards the direction of the greater force.

Front

What is the effect of pulling harder on one side of a rope?

Back

It creates an unbalanced force, causing the rope to move towards the side that is pulling harder.

Front

What is an example of a balanced force in everyday life?

Back

A book resting on a table is an example of balanced forces; the weight of the book is balanced by the support force of the table.