Units 2 and 3 Review

If an object has more mass, then you need _____ to accelerate it.

• more force

• less force

• the same amount of force

• no force

Tags

NGSS.MS-PS2-2

Friction is...

• an unbalanced force.

• a balanced force.

• not a force.

• both a balanced and an unbalanced force.

A rolling ball stops due to friction. This is an example of Newton's first law because...

• objects at rest stay at rest.

• objects in motion stay in motion.

• objects change their motion only with a balanced force.

• objects change their motion only with an unbalanced force.

How could you make this show balanced forces?

• add 50 N down

• add 50 N up

• add 50 N left

• add 50 N right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The strength of an object's gravitational field depends on...

• size

• shape

• mass

• volume

• distance

Tags

NGSS.MS-PS2-4

What is an object's tendency to resist a change in motion?

• inertia

• friction

• mass

• gravity

• weight

Tags

NGSS.HS-PS2-1

The amount of inertia an object has depends on...

• the friction between the object and the ground.

• the mass of the object.

• if the object can increase its speed.

• if the object can decrease its speed.

Tags

NGSS.MS-PS2-2

Which are insulators?

• wood

• silver

• plastic

• rubber

• aluminum

Tags

NGSS.MS-PS3-3

How can you strengthen an electromagnet?

• add light bulbs

• remove the solenoid core

• increase the current

• increase the number of coils in the solenoid

If two unknown objects are pushing away from each other (repelling), select the true statements.

• They could have the same magnetic charge.

• They could have the same electric charge.

• They could have the opposite magnetic charge.

• They could have the opposite electric charge.

• They could have no charge.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5