Science 2 · Unit 4: Humans and animals grow · Cambridge Primary Science Stage 2

Questions

1. 1. Which teeth are for biting food?

   • incisors
   • molars
   • gums
   • canines
   Check

2. 2. Which teeth are for gripping and tearing food?

   • roots
   • incisors
   • canines
   • molars
   Check

3. 3. Which teeth are for chewing and grinding food?

   • gums
   • molars
   • canines
   • incisors
   Check

4. 4. What fixes your teeth to your gums?

   • fluoride
   • toothpaste
   • roots
   • calcium
   Check

5. 5. How many baby teeth do children have?

   • 40
   • 32
   • 10
   • 20
   Check

6. 6. How many teeth do adults have?

   • 50
   • 20
   • 10
   • 32
   Check

7. 7. Why do baby teeth fall out?

   • You brushed them too much.
   • They get old and die.
   • Larger adult teeth are growing in your gums.
   • You ate too many carrots.
   Check

8. 8. How often should you brush your teeth?

   • never
   • once a month
   • twice every day for two minutes
   • once a week
   Check

9. 9. What does fluoride in toothpaste do?

   • helps make your teeth strong
   • makes your teeth fall out
   • makes your teeth yellow
   • gives you energy
   Check

10. 10. Which material in milk helps make teeth strong?

    • salt
    • calcium
    • fat
    • sugar
    Check

11. 11. Which food is bad for teeth?

    • food with lots of sugar
    • fish
    • cheese
    • milk
    Check

12. 12. How often should you go to the dentist?

    • twice a year
    • every day
    • once in your life
    • never
    Check

13. 13. An egg shell sits in a sugary drink for seven days. What happens?

    • It turns into a tooth.
    • It gets stronger.
    • Nothing happens.
    • It gets damaged and stained.
    Check

14. 14. Why do we use egg shells to investigate what sugar does to teeth?

    • Eggs have sugar.
    • Teeth are made of a similar material.
    • Egg shells are teeth.
    • Teeth come from eggs.
    Check

15. 15. What else do we use teeth for, apart from eating?

    • hearing
    • talking
    • seeing
    • smelling
    Check