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Science quiz questions and answers
Physics, chemistry, biology, astronomy and the human body.
Sample questions
A taste of the Science questions players are answering right now.
1.Which planet do humans live on?
- A:Mars
- B:Venus
- C:Jupiter
- D:Earth
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Answer: D: Earth
Humans live on Earth, the third planet from the Sun.
2.What is the common name for H2O?
- A:Salt
- B:Water
- C:Sugar
- D:Oxygen
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Answer: B: Water
H2O, two hydrogen atoms and one oxygen atom, is water.
3.At what temperature does water boil at sea level?
- A:100 °C
- B:90 °C
- C:110 °C
- D:120 °C
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Answer: A: 100 °C
At sea-level pressure, water boils at 100 °C.
4.Which planet is known as the Red Planet?
- A:Venus
- B:Jupiter
- C:Mars
- D:Mercury
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Answer: C: Mars
Mars looks red because of iron oxide on its surface.
5.What is the chemical symbol for gold?
- A:Ag
- B:Au
- C:Gd
- D:Go
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Answer: B: Au
Gold's symbol Au comes from its Latin name, aurum.