Science quiz

1. Which gas do plants take in when they make food with sunlight? Oxygen only Carbon dioxide Helium Nitrogen only

2. What is the chemical formula of water? HO H2O CO2 NaCl

3. What does the heart pump through the body? Air Blood Bone Light

4. The Sun is a… Planet Comet Star Moon

5. Which force pulls objects toward Earth? Magnetism only Gravity Friction only Electricity

6. What is the boiling point of water at sea level, in degrees Celsius? 0 50 90 100

7. About how many bones are in a typical adult human skeleton? 106 206 306 32

8. Which plant part usually takes up water from the soil? Flowers Roots Petals Pollen

9. Sound generally travels fastest through which of these? A solid A gas Empty space A vacuum

10. What is the dense center of an atom called? The shell The nucleus The orbit only The crust

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