General knowledge questions with answers for grade school

2. The earth is composed of a
core, a mantle and a . . . what?
Ans: a crust

3. Which flower has thorns: a
rose, a tulip or a geranium?
Ans: a rose

4. Which animal eats meat: a lion
or a rabbit?
Ans: a lion

5. What part of the body pumps
blood to every other part?
Ans: the heart

6. Which can make its own food:
an animal or a plant?
Ans: a plant

7. What will a caterpillar change
into?
Ans: a butterfly (or a moth)

8. What are the two main gases
in the air that we breathe?
Ans:nitrogen and oxygen

9. Which is a mammal: a shark
or whale?
Ans: a whale

10. Earth is covered mostly
by…what?
Ans: water

11. Most plants grow from
seeds. True or false?
Ans: True

12. Which do not feed their young:
mammals, birds or reptiles?
Ans: reptiles

13. What part of a plant carries
water to its leaves?
Ans: the stem

14. What do you call a mass of ice
that floats in the ocean?
Ans: an iceberg

15. What’s the name for the doctor who
takes care of your teeth?
Ans: a dentist

16. What force makes your hands feel
warm when you rub them
together?
Ans: friction

17. Name two of the three things
needed for photosynthesis to
occur
Ans: light, carbon, water

18. Which are not predators:
panthers, human beings or
elephants?
Ans: elephants

19. What forms when water droplets
in a thundercloud freeze into
lumps of ice?
Ans:hail

20. Which has positive electric
charge: a proton or a neutron?
Ans: a proton

21. Leaves that turn red or yellow in
autumn have lost …what?
Ans: chlorophyll