S9 Physics (7) - Test & magnetic fields

A magnet power by electricity is called a(n)

• Electromagnet

• Mag-electric

• E-magnet

• Power-magnet

How large were the first computer hard drives?

• The size of a bus

• The size of two fridges

• The size of a microwave

• The size of an entire modern laptop computer

Like poles of a magnet experience a ___ force when brought together

• Attractive

• Repulsive

• Neutral

• Zero

What is a "field" in physics?

• A flat area where sports are played

• A region of space that causes an object to move rapidly

• A region of space that causes an object to experience force

• A region of space that causes an object to remain stationary

Magnetic fields act on

• Magnets

• Magnets and all metals

• Magnets and some metals

• Magnets, all metals, and some non-metals

True or false: Earth's magnetic field surrounds the planet but does not exist in its interior.

• True

• False

Magnetic rock is called

• Magnetite

• Magnets

• Ferrite

• Magnesium

The two sides of a magnet are called the

• Poles

• Ends

• Charges

• Ions

What country is earth's magnetic north pole is moving towards?

• Canada

• Iceland

• Russia

• USA (Alaska)

The north pole of the earth is a magnetic _____

• North

• South