Science 6 · Unit 1: The human body · Cambridge Primary Science Stage 6

Questions

1. 1. What is puberty?

   • the day you are born
   • when you stop growing
   • the stage when the body changes so a person becomes able to reproduce
   • an illness
   Check

2. 2. What causes the changes in puberty?

   • chemicals in the body called hormones
   • exercise
   • eating sweets
   • germs
   Check

3. 3. At about what age does puberty often start in girls?

   • about 30
   • about 11
   • about 5
   • about 20
   Check

4. 4. At about what age does puberty usually start in boys?

   • about 20
   • about 13
   • about 25
   • about 6
   Check

5. 5. Which change happens to both boys and girls in puberty?

   • The voice gets much deeper.
   • Hips get wider.
   • Shoulders get much broader.
   • The body grows more hair.
   Check

6. 6. Which change happens to boys only?

   • The skin gets oily.
   • They grow taller.
   • More hair grows.
   • The voice gets much deeper.
   Check

7. 7. What are the male sex cells called?

   • hormones
   • eggs
   • sperm
   • ova
   Check

8. 8. What are the female sex cells called?

   • testes
   • hormones
   • eggs or ova
   • sperm
   Check

9. 9. What is fertilisation?

   • when hormones are made
   • when puberty starts
   • when a sperm and an egg join together
   • when a baby is born
   Check

10. 10. Which organs produce sperm?

    • the uterus
    • the sperm duct
    • the ovaries
    • the testes
    Check

11. 11. Which organs produce eggs?

    • the uterus
    • the ovaries
    • the testes
    • the birth canal
    Check

12. 12. Where does a baby develop?

    • in the uterus (womb)
    • in the ovary
    • in the oviduct
    • in the stomach
    Check

13. 13. Where does fertilisation take place?

    • in the testes
    • in the oviducts
    • in the birth canal
    • in the uterus lining
    Check

14. 14. What happens during menstruation?

    • New eggs are made in the uterus.
    • An unfertilised egg and the lining of the uterus leave the body.
    • A sperm and egg join.
    • The baby is born.
    Check

15. 15. Which is not part of the female reproductive system?

    • ovary
    • uterus
    • testes
    • oviduct
    Check

16. 16. What is the main job of the reproductive system?

    • to breathe
    • to pump blood
    • to digest food
    • to make sex cells needed for reproduction
    Check

17. 17. How much can girls grow in a year at the start of puberty?

    • up to 50 cm
    • they stop growing
    • up to 12 cm
    • up to 1 cm
    Check