Magnets

Can you make a magnet stronger?

• Yes

• No

Which of these has magnets in them?

• All of the following

• fridges

• computers

• stereos

Which three metals are always attracted to a magnet?

• Iron

• Copper

• Nickel

• Cobalt

What is a natural magnet called?

• Copperstone

• Steelstone

• Pizzastone

• Lodestone

What are magnetic materials?

• Magnetic materials are substances that can be turned into magnets or are attracted to magnets.

• Items that are only used in electronics
• Substances that conduct electricity
• Materials that repel magnets

1. Why can’t some people with metal implants have an MRI scan? Click all 3 of the correct answers

• 
  The metal implants are safe to scan.

• 
  The metal implants could heat up.

• 
  The metal implants affect the scan and make it inaccurate.

• 
  

  They could get injured.

What are two ways to make a magnet weaker?

• When they get too hot or cold.

• Putting them inside a sock.

• Time and age.

• Keeping them at room temperature.

1. What are two ways to make a magnet stronger?

• Shape

• Colour

• Name

• Size

Why is a horseshoe magnet stronger than a bar magnet?

• A bar magnet has a stronger magnetic field due to its longer length.
• Horseshoe magnets are made of a different material than bar magnets.
• Bar magnets are designed to be stronger for industrial use.
• Because its U shape brings the poles together, increasing the area of the poles. This means the magnetic field is stronger.

1. What part of a magnet is the strongest?

• The poles of the magnet.

• The north pole.

• The south pole.

• Away from the poles.