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Class 4 Science Chapter 6 Test 2

Welcome to your Class 4 Science Chapter 6 Test 2

1. 
What is force?
2. 
The lever that turns around a certain point called ________
3. 
________ is a simple machine which consists of toothed wheels of different sizes.
4. 
The flag is raised up with the help of _______.
5. 
Water can be easily drawn from a well by using _______.
6. 
Pulling a weight is ________ than lifting it by pulley.
7. 
With the help of _______, we can increase and decrease the speed.
8. 
A ________ is a simple machine that consists of grooved wheel and a rope.
9. 
________ allows us to move objects easily from bottom to top and top to bottom.
10. 
If we apply the same force on toy car, it will be travel longer on:
11. 
The load is lifted up by applying force (effort) on one end of the rope passing over the _________.
12. 
Everything that makes our work easier is called a __________.
13. 
Ramp is also called
14. 
The teeth of ______ wheels fit in with each other and move together.
15. 
Lever, pulley, gear and ramp (inclined plane) are ________ machine.
16. 
To lift objects with the help of pulley, put the effort ________.
17. 
When a body changes its position, it is called:
18. 
_______ is a simple machine with one end relatively higher than the other.
19. 
A ________ is a simple machine that can be used to push or lift heavy objects.
20. 
Changing the direction of force makes it easier to work with the _______.