General Science Quiz 252 (20 MCQs)

Quiz Instructions

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1. The imaginary line through Earth around which it rotates is called the.....

Correct Answer: A) Axis.

2. Where does Photosynthesis take place in a plant cell?

Correct Answer: B) Chloroplast.

3. Which is a naturally occurring chemical?

Correct Answer: C) Salt.

4. A mixture in which one substance is dissolved in another.

Correct Answer: C) Solution.

5. What percent of fire-related deaths are due to smoke inhalation rather than burns?

Correct Answer: C) 80%.

6. What is Half-life?

Correct Answer: C) The amount of time it takes for half the nuclei in a sample of the isotope to decay.

7. These are the cause of the change of these

Correct Answer: C) Neutron number.

8. What characterists do mammals have?

Correct Answer: C) Have fur/hair.

9. Rocks that cool slowly are more likely to.....

Correct Answer: A) Form large crystals.

10. Earth's atmosphere is held down by

Correct Answer: B) Gravity.

11. Recording the location of a star requires a measurement of.....

Correct Answer: D) All of the above.

12. ..... carry messages to and from the skin and other sense organs.

Correct Answer: B) Sensory nerves.

13. How many days are there in a normal year?

Correct Answer: C) 365.

14. ..... Carpal bones are arranged in two irregular rows of four bones each wrist.

Correct Answer: D) 8.

15. What is pressure?

Correct Answer: D) The force of the air on a given surface divided by the area of that surface.

16. A close living situation between 2 species where at least one benefits is called

Correct Answer: B) Symbiosis.

17. Comets can be found in a region of the solar system called the.....

Correct Answer: A) Kuiper belt.

18. The majority of the energy on Earth comes from the sun, but small amounts come from.....

Correct Answer: A) Radioactive decay.

19. What is the term for the temperature at which a liquid changes to a solid?

Correct Answer: C) Freezing point.

20. Most fossils are created from the soft parts of an organism.

Correct Answer: B) False.