Other questions in this quiz

2. Non-metal atoms combine to make

  • molecules
  • electrons
  • protons

3. How were the oceans formed?

  • the first atmosphere cooled and water vapour condensed
  • it rained and filled where the oceans are now

4. What % of the Earth's atmosphere is mainly nitrogen and oxygen?

  • 98%
  • 99%
  • 90%

5. The remaining % of the air is mainly ...

  • Other gases with tiny amounts of argon and carbon dioxide
  • Argon with tiny amounts of carbon dioxide and other gases
  • Carbon dioxide with tiny amounts of argon and other gases

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