MAGNETISM

Multiple Choice

_{^{The magnet's shown will}}

• not move

• attract

• repel

• all of the above

Multiple Choice

_{^{The magnet's shown will}}

• not move
• attract
• repel
• all of the above

Multiple Choice

Magnets attract things made of

• copper

• iron

• wood

• plastic

Multiple Choice

All magnets have 2

• fields
• colors
• poles
• all of the above

Multiple Choice

Iron, Nickel and cobalt are all __________________ materials

• Shiny
• poles
• magnetic
• cold

Multiple Choice

Where is the strongest attraction force of the magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

Multiple Choice

Which of the following is true about a bar magnet?

• Its magnetic field is strongest near its center.
• It is surrounded by a magnetic field.
• The north pole is stronger than the south pole.
• The south pole is stronger than the north pole.

Multiple Choice

The space around a magnet where the force of a magnet can attract best is called__________

• magnetism
• bar magnet
• horseshoe magnet
• magnetic field

Multiple Choice

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• magnetite
• iron

Multiple Choice

How is a permanent magnet DIFFERENT from a temporary magnet?

• A permanent magnet attracts materials made of iron.
• A permanent magnet has poles.
• A permanent magnet has a magnetic field.
• A permanent magnet keeps its magnetism for a long time.

Multiple Choice

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

Multiple Choice

Generators are devices that convert _____ energy into _____ energy.

• chemical; mechanical
• mechanical; electrical
• electrical; mechanical
• potential; kinetic

Multiple Choice

In a _______ a spinning turbine moves magnets which generates an electric current.

• Motor

• Generator

Multiple Choice

What is the transfer of energy in when you plug in a motor and it spins?

• chemical to mechanical

• electrical to mechanical

• mechanical to electrical

• physical to potential

Multiple Choice

What type of energy comes OUT of a generator?

• Mechanical

• Electrical

• Thermal

• Potential

Multiple Choice

Why are galvanometer used instead on ammeters?

• It detects both the direction and magnitude of current.

• It detects only current.

• It is more expensive.

• They are more accurate.

Multiple Choice

In an electric motor, the energy transformation begins as  ----

• electrical and becomes chemical

• mechanical and becomes electrical

• electrical and becomes mechanical

• mechanical and becomes chemical