WONDER #2741: What Is an Implosion?

Question 1 of 3

During implosion, which force pulls a building to the ground after explosives weaken its supports?

  1. Friction
  2. Magnetism
  3. Tension
  4. Gravity

Question 2 of 3

A metal tank can implode when the pressure inside is lower than the ____________ outside.

  1. electromagnetism
  2. air pressure
  3. weight
  4. temperature

Question 3 of 3

Which is a reason a demolition crew might choose implosion over using a wrecking ball, according to this Wonder?

  1. To avoid damaging surrounding buildings
  2. To cut down the spread of debris
  3. To make the building fall faster
  4. Both a and b

Check your answers online at https://wonderopolis.org/wonder/What-Is-an-Implosion.