SCIENCE E - FINAL 2

A magnetic field is the force created by _____

• temperature difference
• Magnet

• gravitational force
• Plastic

____ is a mysterious force which appears between magnets, and magnetic material.

• gravity
• electricity
• Levitation

• magnetism

____ can attract needle and pins.

• Magnet
• Glass
• Plastic
• Velcro

Electronic devices have ____ effect in our lives

• GREAT

• LESS

We ____ use magnetism in technology.

• can

• cannot

____ stays magnetize even if you remove the magnet

• Steel

• Iron

How could you destroy the magnetic properties of a 'permanent' magnet?

• Heat it up

• Submerge it in water
• Expose it to ultraviolet light
• Freeze it in liquid nitrogen

After stroking a paperclip with a magnet, it can now attract iron and steel. Why?

• It became soft

• It became magnetized

When a magnet helps to magnetize a piece of iron or steel, we say that the magnet has ____ magnetism in the metal.

• induced

• less induced

Steel and its alloy are ____ a magnetic material

• hard

• soft