Magnetism

1. Which materials are most commonly attracted to magnets?

• A) Plastic
  

• B) Iron-containing materials
  

• C) Wood
  

• D) Rubber

2. What is the invisible area around a magnet called?

• A) Magnetic spot
  

• B) Magnetic field
  

• C) Magnetic circle
  

• D) Magnetic halo

3. What happens if you bring two north poles of magnets together?

• A) They attract
  

• B) They repel
  

• C) They lose magnetism
  

• D) They stick together permanently

4. 4.The red end of a school magnet usually shows which pole?
   

• A) South pole
  

• B) North pole
  

• C) East pole
  

• D) West pole

5. Which of the following is a naturally magnetic rock?

• A) Granite
  

• B) Quartz
  

• C) Lodestone
  

• D) Limestone

6. What mineral is lodestone made of?

• A) Magnetite
  

• B) Iron oxide
  

• C) Copper
  

• D) Graphite

7. Which of these is a permanent magnet?

• A) An iron nail that was rubbed with a magnet and lost magnetism after some time
  

• B) A bar magnet that keeps its strength for years
  

• C) A paper clip near a magnet
  

• D) A coil of wire with current passing through

8. What do we call magnets that only stay magnetic for a short time?

• A) Permanent magnets
  

• B) Flexible magnets
  

• C) Temporary magnets
  

• D) Hard magnets

9. What creates the Earth’s magnetic field?

• A) The Sun’s heat
  

• B) The rotation of the Earth only
  

• C) Movement of molten iron in the core
  

• D) Gravity

10. Why is the Earth’s magnetic field important?

• A) It heats the atmosphere
  

• B) It protects us from harmful radiation from space
  

• C) It makes plants grow faster
  

• D) It produces electricity