Available Answers

1. 1.

   Choose the correct answers to complete these sentences.

   1. Metal detectors are used to
      1. point at the ground.
      2. find metal on a person, vehicle or in the ground.
      3. find directions.
      4. find magnetic waves.
   2. The first metal detectors were
      1. large and worked well.
      2. small and cheap.
      3. big and used a lot of power.
      4. unsafe to use.
   3. Metal detectors are used in airports and shopping centres to
      1. keep out guns.
      2. find metal on a person.
      3. find hidden weapons.
      4. all of the above.
2. 2.

   Find words in the passage that mean the same as these.

   1. a long straight piece of wood or metal
   2. a high sound
   3. a thing used to fight or attack someone
   4. Use the word waves in a sentence such that it has a different meaning from the one in the passage.
3. 3.

   Write if these sentences are in the present tense or the past tense.

   1. People use metal detectors to find metal.
   2. The first metal detectors were made to help miners.
   3. They were big and cost a lot of money.
   4. Guards use special wands to find metal on a person.
   5. During wars, people plant bombs in the ground.
4. 4.

   How do metal detectors find metal?

5. 5.

   Who used the first metal detectors? How were they different from the ones we have today?

6. 6.

   How do they help guards?