# Changing environments

> Grade 4: classification keys, how environments change with seasons, human impact (pollution, building), nature reserves and protecting habitats.

Source: https://olyclass.com/library/science-g4-changing-habitats-en/

- Subject: Science
- Level: Grade 4
- Quiz: 16
- Play it free on one screen (projector, TV or whiteboard): https://olyclass.com/library?play=science-g4-changing-habitats-en
- Copy and edit it: https://olyclass.com/library?copy=science-g4-changing-habitats-en
- Games it plays well in: [Mini Golf](https://olyclass.com/classroom-games/mini-golf/), [Ladder Climb](https://olyclass.com/classroom-games/ladder-climb/), [Paper Race](https://olyclass.com/classroom-games/paper-race/), [Three in a Row](https://olyclass.com/classroom-games/three-in-a-row/)

## Questions

1. What is a classification key used for? (To count seeds / To identify living things / To lock a cage / To measure rainfall)
   Answer: To identify living things
2. A key asks: 'Does it have wings?' What kind of question is this? (A question about its age / A question about its name / A question with many answers / A yes or no question)
   Answer: A yes or no question
3. Which feature could you use to sort animals into two groups in a key? (Has a backbone or not / Is my favourite / Lives near my house / Was seen on Monday)
   Answer: Has a backbone or not
4. Which question would best split a group of garden minibeasts into two groups? (Did I see it today? / Does it have six legs? / Is it nice? / Is it small?)
   Answer: Does it have six legs?
5. What often happens to many trees in autumn in cool places? (Their leaves change colour and fall / Their leaves turn into flowers / They grow fruit overnight / They shrink into the ground)
   Answer: Their leaves change colour and fall
6. Why do some birds fly to warmer places for the winter? (The nests are too big / There is more food there / They dislike snow games / They want to sleep longer)
   Answer: There is more food there
7. What is it called when an animal sleeps through the cold winter? (Evaporation / Hibernation / Migration / Pollination)
   Answer: Hibernation
8. Which is an example of pollution harming a river? (A bridge's shadow on it / Fish swimming in it / Rain falling into it / Rubbish thrown into the water)
   Answer: Rubbish thrown into the water
9. How can building a new road harm wildlife? (It can destroy animal habitats / It gives animals more food / It makes the air cleaner / It plants new forests)
   Answer: It can destroy animal habitats
10. What is a nature reserve? (A kind of factory / A place for building houses / A protected place for wildlife / A shop selling pets)
   Answer: A protected place for wildlife
11. In a classification key, each question helps us narrow down the choices.
   Answer: True
12. Litter can never harm animals.
   Answer: False
13. Cutting down forests can leave animals without homes.
   Answer: True
14. Name one thing people can do to help protect habitats.
   Answer: Plant trees, recycle, not drop litter, or create nature reserves
15. What word means animals travelling to another place for the season?
   Answer: Migration
16. Give one way day length changes in winter compared with summer.
   Answer: Days are shorter in winter