WONDER #1277: Why Is Earth Round?

Question 1 of 3

Which of the following shapes is closest to Earth’s true shape?

  1. round
  2. square
  3. triangle
  4. ellipsoid

Question 2 of 3

<p class=\"FreeForm\">Which of the following forces explains Earth’s shape?</p>

  1. gravity
  2. momentum
  3. centrifugal force
  4. acceleration

Question 3 of 3

<p class=\"FreeForm\">Which of the following is a nickname given to Earth by astronauts?</p>

  1. Beach Ball
  2. Blue Marble
  3. Green Basketball
  4. Blue Ball

Check your answers online at https://wonderopolis.org/wonder/why-is-earth-round.