Magnetic Force and Electromagnetism

What is magnetic force?

• A force exerted by electrically charged particles

• The attractive and repulsive forces between two poles

• A force exerted by magnets that makes an object become electrically charged

• A force exerted by a magnet only when it physically touches an object

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

Tags

NGSS.MS-PS2-3

Which part of a circuit is responsible for "pushing" charges around a circuit?

• Electrical devices

• Power source

• The wire

• None of the above

What happens to the strength of a magnetic field as you move away from the magnet?

• The strength of the magnetic field increases.

• The strength of the magnetic field doesn't change.

• The strength of the magnetic field is doubled.

• The strength of the magnetic field decreases.

Tags

NGSS.MS-PS2-3

What is responsible for creating a magnetic field around Earth?

• Earth's crust

• Earth's iron core

• Earth's mantle

• Earth's atmosphere

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is a magnetic material?

• A material that becomes positively charged when a magnet is brought near it.

• A material that produces a magnetic force.

• A material that becomes negatively charged when a magnet is brought near it.

• A material that is attracted or repelled by a magnet.

Tags

NGSS.MS-PS2-3

Why is Earth's magnetosphere important?

• It deflects dangerous solar wind from the sun

• It keeps us in orbit around the sun

• it keeps the moon in orbit around the earth

• it prevents extraterrestrial objects from crashing into earth

Where is the Earth's magnetic South pole located in relation Earth's geographic South pole

• Earth's magnetic south pole is located directly at earth's geographic south pole

• Earth's magnetic south pole is located 10 degrees from Earth's geographic south pole

• Earth's magnetic south pole is located 10 degrees from Earth's geographic north pole

• Earth's magnetic south pole is located directly at Earth's geographic north pole

What is the difference between a conductor and insulator?

• conductor: allows electricity to flow easily.

  insulator:does not allow electricity to flow easily

• conductor: does not allow electricity to flow easily

  insulator: allows electricity to flow easily

An object with a magnetic field is called a what?

• electromagnet

• magnet

• circuit

• magnetic material