Unit 11 exam --- electricity and magnetism

Which of the following things is not possible?

• a liquid magnet

• a broken magnet with with north and south poles

• a magnetic field

• opposite polarity in a magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnetic objects are generally grouped into which 2 categories?

• Ferromagnetic and paramagnetic

• magnetic forces and magnetic fields

• permanent magnets and objects that can become magnetized

• north poles and south poles

What can destroy a magnet?

• breaking it in half

• Heat

• Extreme cold temperatures

• Electricity

What is the fundamental difference between magnetic poles and electric charges?

• magnets are are always opposite

• charges can be separated, but poles cannot

• electric charges are always the same

• they are always attracted to each other

Condition of a system that describes opposing physical characteristics.

• equilibrium

• asymmetry

• polarity

• magnetism

A force that causes an object to twist or rotate.

• Torque

• Pressure

• Friction

• Momentum

What is the speed of a gravitational field?

• The speed of sound

• The speed of light

• The rotational speed of Earth

• Molecular speed

What force exists between these 2 magnets?

• Attraction

• Repulsion

• None

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

On Earth, where is Magnetic North approximately located?

• The Equator

• The North Pole

• The South Pole

• Earth's core

As the distance between two magnets increases (they get farther apart), the force between them:

• Increases
• Decreases
• Stays the Same