WONDER #1292: How Did Earth Begin?
Question 1 of 3
Scientists believe Earth formed about how long ago?
- 27 years
- 4.6 billion years
- 3 million years
- 20 trillion years
Question 2 of 3
Early in the process of its formation, a planetesimal the size of Mars hit Earth, causing what?
- a big chunk of Earth to be knocked into space, becoming our Moon
- the angle of Earth’s tilt to be changed to its current orientation
- Pangaea to break apart
- both (A) and (B)
Question 3 of 3
Larger chunks of rock that eventually formed into the planets of our solar system are known as what?
- big rocks
- baby planets
Check your answers online at https://www.wonderopolis.org/wonder/how-did-earth-begin.