Other questions in this quiz

2. What was the Earth like around 4.5 billion years ago?

  • Violent and volcanic
  • Hot and sunny
  • Quiet and peaceful
  • Cold and damp

3. Why was it like this?

  • Because it was too cold
  • Because the volcanoes were constantly releasing them
  • Because it was too hot
  • Because there were no humans

4. What happened to temperatures later?

  • They stayed the same
  • They began to cool
  • They began to rise

5. The tiny amount of which chemical has kept the Earth warm enough to support life?

  • Oxygen
  • Hydrogen
  • Carbon Dioxide (CO2)
  • Nitrogen

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