Magnetic fields

The person who first suggested that Earth behaves as a magnet was:

• Ampere

• Oersted

• Columbus

• Gilbert

What is the name of the area surrounding Earth that is influenced by Earth’s magnetic field?

• atmosphere.

• aurora borealis

• stratosphere

• magnetosphere

Which of the following statements is true about Earth’s magnetic poles?

• They are the areas where Earth’s magnetic field is strongest.

• They are located at Earth’s geographic poles.

• They are the areas where Earth’s magnetic field is weakest.

• Earth has four magnetic poles.

Earth's magnetic field protects Earth from the sun's:

• light

• solar winds

• heat

• energy

How is Earth's magnetic field similar to that of a magnet?

• It is hundreds of miles long

• It has north and south poles

• It is made in Earth's core

• It is shaped like a horseshoe

What is our best evidence that Earth has a magnetic field?

• All things fall toward Earth's center

• A compass needle lines up with it

• Winds blow from east to west

• Earth's oceans all have currents

Earth's magnetic field and a bar magnet attract particles to the same locations. Where are they?

• The middle

• All around the outside

• The north and south poles

• First to the middle, then to the ends

Why does a compass needle point north?

• The compass is a bar magnet

• Because north is up

• Because it's magic

• It lines up with the Earth's magnetic field

Earth acts like a giant magnet because its center is made up MOSTLY of:

• granite

• limestone

• iron

• nickel

A ___________ is a device that has a magnetized needle that can spin freely.

• magnet

• compass

• filing

• electron

Tags

NGSS.MS-PS2-3