Science 5 · Unit 6: Seasons and adaptations of plants and animals · Cambridge Primary Science Stage 5

Questions

1. 1. How do we calculate the length of day?

   • sunrise plus sunset
   • sunset time minus sunrise time
   • the number of clouds
   • sunrise time only
   Check

2. 2. Sunrise is 06:10 and sunset is 19:50. What is the length of day?

   • 26 h 00 min
   • 13 h 10 min
   • 13 h 40 min
   • 12 h 40 min
   Check

3. 3. In Cape Town days got shorter from February to March. What season was coming?

   • no season
   • summer
   • autumn
   • spring
   Check

4. 4. Why does the length of day change during the year?

   • Clocks change.
   • The Earth's tilted axis as it orbits the Sun
   • The Sun gets bigger and smaller.
   • The Moon blocks the Sun.
   Check

5. 5. Why are leaves green?

   • They contain chlorophyll.
   • They contain iron.
   • They reflect the sky.
   • They contain water only.
   Check

6. 6. Why do leaves change colour in autumn?

   • They get too much sunlight.
   • They are painted by insects.
   • It rains more.
   • Days are shorter, the leaves can't make food, and the chlorophyll breaks down.
   Check

7. 7. What does 'dormant' mean for a tree in winter?

   • growing fast
   • resting or 'sleeping' with no leaves
   • flowering
   • dead
   Check

8. 8. Why do people in the USA call autumn 'fall'?

   • People fall over.
   • Leaves fall from the trees.
   • Temperatures rise.
   • Snow falls every day.
   Check

9. 9. What is hibernation?

   • a deep sleep for a long time through winter
   • growing new fur in summer
   • changing colour
   • travelling to a warmer place
   Check

10. 10. What happens to an animal's body when it hibernates?

    • Its heart rate, breathing and temperature go down.
    • It gets hotter.
    • Its heart beats faster.
    • It runs around.
    Check

11. 11. Why do bears eat a lot of food in autumn?

    • to get ready to migrate by boat
    • to build up fat to survive the winter
    • to grow taller
    • because food tastes better
    Check

12. 12. What is migration?

    • losing leaves
    • sleeping all winter
    • changing fur colour
    • travelling a long way to a place with food or warmth
    Check

13. 13. Why do wildebeest migrate 3000 km every year?

    • to follow the rains to new grass
    • to escape the sea
    • to find snow
    • to hibernate
    Check

14. 14. Where do Siberian cranes migrate to in winter?

    • India
    • the Arctic
    • the North Pole
    • Antarctica
    Check

15. 15. Why do grey whales leave the Arctic Ocean in winter?

    • The water freezes.
    • It is too hot.
    • There is too much food.
    • They are hibernating.
    Check

16. 16. Does the Arctic tern migrate or hibernate?

    • migrate
    • hibernate
    Check

17. 17. How do humans adapt to the seasons?

    • We wear different clothes and heat our homes in winter.
    • We lose our hair in autumn.
    • We migrate every year.
    • We hibernate.
    Check