Mini-Quiz: Big Bang Theory

1. How can astronomers tell the galaxies are moving away from us?

   They can see them through a telescope as they move awaySorry, not correct. Try another button. They get smaller every dayGood try, but not right. Select another answer. Their light is shifting toward the color redThat is correct. You understand about the Big Bang theory.

2. How were stars formed after the Big Bang?

   Matter collected together as it cooled down after the huge explosionCorrect. A bang-up job! Matter flew apart and collided with the galaxies in spaceOops! Wrong answer. Re-read the question and try again. The stars refused to explode and have stayed the sameSorry, not correct. Try another button.

3. Can the Big Bang theory ever be proven?

   Yes, if enough people believe it is trueGood try, but not right. Select another answer. No, because it is speculation on something that happened in the distant pastThat is correct. You understand about the Big Bang theory. Only if the other theories are shown to be incorrectSorry, not correct. Try another button.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.