Fields & Interactions

What happens when two north poles of a magnet are placed together?

• they repel
• they attract
• they cancel each other out
• the strength of the magnet is doubled

Tags

NGSS.MS-PS2-3

A north pole and a south pole will attract.

• True
• False

Magnets can interact without touching.

• True
• False

Tags

NGSS.MS-PS2-5

A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.

• calculator

• ruler

• compass

• map

Where is the magnetic field the strongest around a bar magnet?

• far away from the magnet

• at the side of the magnet

• at the poles

• above the magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnetic force between two magnets gets weaker the more ________________ between them.

• distance
• attraction
• metal
• lightsabers

Tags

NGSS.MS-PS2-3

What will happen when these magnets are let go?

• The magnets will not move because they are not touching.

• The magnets will move closer to each other because the magnetic force will pull them together.

• The magnets will move away from each other because the magnets are not touching.

• The magnets will move away from each other because the magnet force will push them apart.

Tags

NGSS.3-PS2-2

NGSS.3-PS2-3

Which of the following phenomena can't be explained by a field?

• the moon orbits around the Earth

• leaves change color during the fall

• lightning strikes a building during a storm

• a compass points north

Tags

NGSS.MS-PS2-5

The gravitational force between 2 objects

• only exists when at least one of the objects is a solid.

• only affects the object that has the smaller mass.

• is almost always repulsive.

• is stronger the more massive one or both of objects are.

Tags

NGSS.MS-PS2-4

Which of the following will decrease the electrostatic force between two negatively charged balloons?

• move the balloons closer together

• remove negative charges from one of the balloons

• add negative charges to one of the balloons

• keep the distance between the balloons constant

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5