CP Ch10.2 Magnetic Fields

What happens when a compass needle is placed in a magnetic field?

• It aligns itself with the magnetic field lines.

• It spins rapidly.

• It changes color.

• It becomes invisible.

What do electrons in atoms do that creates tiny magnets?

• Absorb light

• Produce sound waves

• Spin about their own axes

• Generate heat

What do iron filings on a magnet trace out?

• Electric field lines

• Gravity field lines

• Magnetic field lines

• Heat field lines

What is the direction of the magnetic field outside a magnet?

• From east to west pole

• From south to north pole

• From north to south pole

• From west to east pole

What are common materials used to make magnets?

• Iron, nickel, and cobalt

• Aluminum, copper, and zinc

• Gold, silver, and platinum

• Lead, mercury, and uranium

What do closer magnetic field lines indicate?

• Weaker magnetic field

• No magnetic field

• Electric field strength

• Stronger magnetic field

Where does the concentration of iron filings show greater magnetic field strength in a magnet?

• At the poles

• At the center

• On the sides

• On the surface