Earth Magnetic Field

Why does a compass needle point north?

• The compass is a bar magnet

• Because north is up and you know that up is always north or the stratosphere.

• Because it's magic

• Because the North end of the compass lines up with the Earth's magnetic south pole

A north pole and a south pole will attract.

• True

• False

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The motion of liquid _______ in the Earth's core creates a magnetic field.

• Iron

• Magnesium

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

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The Earth's magnetic field is most useful for _____.

• deflecting solar wind

• keeping track of time

• creating sunny weather

• making it look cool in front of the other planets

Why does a compass needle point north?

• because north is up

• it lines up with Earth's magnetic field

• because of magic

• the compass is programmed to do so

The _____ is Earth's magnetic field that protects us from the sun's harmful radiation and solar wind.

• Magnetosphere

• Biosphere

• Hydrosphere

• Heliosphere

The area of magnetic force around a magnet is known as its _____________.

• Magnetic Field

• Magnetic Fan Lines

• Magnetic Area

• Magnetic Location

Tags

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Magnetic fields are strongest _______.

• at both poles

• at the north pole

• at the south pole

• between the poles

A _____ is a device that has a magnetic needle that spins freely. It is used for navigation because its needle usually points north.

• calculator

• compass

• GPS

• map