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Science
4th
grade
Changes in Materials that are useful and harmful in Environment
20 questions
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- 1. Multiple Choice
What do you see in the picture?
melting ice
chicken bbq
frozen product
vegetables
- 2. Multiple Choice
Why are the products frozen?
to make it good looking
to keep the weight of the food we buy
to keep or preserve the freshness of the food we buy
to stay its color
- 3. Multiple Choice
What is the process involve when we want to preserve the food we buy
freezing
melting
boiling
coloring
- 4. Multiple Choice
What do you see in the picture?
Different food garbages improperly thrown
Different chemicals improperly dumped or thrown in a place
Containers with plastics inside
Metals that can explode when heated
- 5. Multiple Choice
How do chemicals affect our environment?
it can cause healthy environment
it can cause pollution
it can help preserve food
it can help us in resuing materials
- 6. Multiple Choice
How can pollution affects us?
it can help in reproducing of animals
it can cause many kinds of disease
it can help us clean the air
it can lessen waste in environment
- 7. Multiple Choice
All are kinds of pollution, except
Land pollution
Air pollution
Wster pollution
Mechanical pollution
- 8. Multiple Choice
When garbage like plastics and other types of waste are dumped on a piece of land, it becomes
a unique structure in the area
dumping site
cleaning area
polluted
- 9. Multiple Choice
What kind of pollution do you think hapoens in the picture?
Water pollution
Land pollution
Air pollution
Plastic pollution
- 10. Multiple Choice
What are the pollutants in the water pollution?
Grass and soil
Water and fish
Humans and plants
Garbage and used detergents
- 11. Multiple Choice
Pollutants are harmful to fishes because it will _____ their habitat
Clean
Build
Destroy
Renew
- 12. Multiple Choice
All practices are harmful to our environment, except
planting trees
burning of garbages
throwing of garbages in the river
improper dumping of chemicals
- 13. Multiple Choice
It releases toxic materials and makes the air we breath harmful to us and to our environment
washing clothes
drying of clothes
burning plastics
freezing water
- 14. Multiple Choice
it will help us remove harmful substances present in the air, it reduces flood and helps avoiding soil erosion
Air pollution
Water pollution
Land pollution
Gaseous pollution
- 15. Multiple Choice
uncontrolled cutting of trees, wildlife may become endangered and extinct, flashflood and landslides may also occur
global warming
deforestation
soil erosion
land pollution
- 16. Multiple Choice
Selling of empty bottles of soy sauce and vinegar
has useful effects
has harmful effects
no effects
none of these
- 17. Multiple Choice
throwing dead animals in the river
has useful effects
has harmful effects
no effects
none of these
- 18. Multiple Choice
Burning of garbages
has useful effects
has harmful effects
no effects
none of these
- 19. Multiple Choice
Planting trees and flowers in backyard
has useful effects
has harmful effects
no effects
none of these
- 20. Multiple Choice
Making doormats using old sacks and strips of clothes
has useful effects
has harmful effects
no effects
none of these
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