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Class 4 Science Chapter 7 Test 2

Welcome to your Class 4 Science Chapter 7 Test 2

1. 
Some renewable resources are used as ______ substitutes.
2. 
About what percentage of the Earth’s surface is land?
3. 
Coal, petrol, diesel and natural gas are ______ resources.
4. 
Recycling saves natural resources by making things________.
5. 
______ are simple solid chemical substances which are present in the earth.
6. 
Dinosaurs were present on earth ______ of years ago.
7. 
The skeletons of many ancient animals are still preserved in:
8. 
Fossils are found under ______
9. 
Air, water, soil, forest and solar energy are ________resources.
10. 
______ are used to make wires, coins, jewelry and utensils.
11. 
______ were lizards like giant animals.
12. 
Those resources which cannot be replaced by new ones easily are called ______ resources
13. 
_______is/are called non-renewable resources.
14. 
Coal, petrol, diesel and natural gas take ______ of years to form
15. 
Due to excessive use of natural resources, renewable resources will also run out or will become________.
16. 
Dinosaurs are now_______.
17. 
To make things reusable is called:
18. 
An example of non-renewable sources is:
19. 
The imprints or remains of many organisms that do not exist in this world now are known as______.
20. 
Glass is made from: