Electromagnetic Force Post test

A _________________ is needed to make a motionless object move.

• direction

• command

• force

• magnet

Tags

NGSS.MS-PS2-2

To make an object in motion stop, you need to ________.

• apply a force in the direction opposite to the way the object is moving.

• apply a force in the same direction the object is moving.

• apply no force.

• calculate the amount of force required to stop an object in motion.

Tags

NGSS.MS-PS2-2

In an air hockey game, a cushion of air increases the speed of play because it _______.

• increases the friction so the puck can be directed more efficiently

• increases the friction to give the puck an additional push

• lowers the friction between the mallet and the puck

• lowers the friction between the table and the puck

If a student pushes with 500 N of force on a cart against a wall. The cart doesn't move. Why?

• The wall is sturdy

• The wall pushed back with a force of 500 N

• The wall pushed back with a force of 650 N

• The wall pushed back with a force of 350 N

Tags

NGSS.MS-PS2-1

Forces in the same direction

• add together

• subtract from each other

Tags

NGSS.MS-PS2-2

Net force of 0 N...

• ...moves to the left

• ...moves to the right

• ...does not move

• ...jumps in the air

Tags

NGSS.MS-PS2-2

When two magnets interact...

• like poles attract

• opposite poles repel

• nothing happens

• opposite poles attract

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Can magnetism go through objects?

• yes

• no

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Can a steel nail pick up a paperclip?

• Always

• Never

• Only if the nail is touching a temporary magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The greater the distance between magnets, the _________ the force between them.

• greater

• weaker

Tags

NGSS.MS-PS2-3