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Force and Pressure
Force and Pressure- 8th Std Science
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Question 1 |
- Fill in the blanks.
Joule | |
pascal | |
Watt |
Question 2 |
Friction is a _______ force.
Reaction | |
contact | |
Feild |
Question 3 |
The effort we use to move any object is called a ______
force | |
energy | |
mass |
Question 4 |
The SI unit of force is named after the scientist ________
Alexander Fleming | |
Issac Asimov | |
Sir.Issac Newton |
Question 5 |
A ______ may bring a change in the state of motion of an object.
force | |
Energy | |
motion |
Question 6 |
A force that can cause or change the motion of an object by touching it is called _______ force.
contact | |
Feild | |
reaction |
Question 7 |
Muscular force is ________ force.
contact | |
Receiving | |
feild |
Question 8 |
The force of _______ arises due to the contact between two bodies.
Temperature | |
traction | |
friction |
Question 9 |
The force of gravity is an __________ force.
Feild | |
attractive | |
Contact |
Question 10 |
Liquids and gases are called ________
Reaction | |
Feild | |
fluids |
Question 11 |
Fluids exert pressure in the bottom of the __________
all directions | |
particular direction | |
north |
Question 12 |
The pressure of a liquid depends on ________ force
gravitational | |
Feild | |
Contact |
Question 13 |
The pressure of the liquid increases with the ________ in depth.
increase | |
Decrease |
Question 14 |
_______ column is force per unit area.
temperature | |
Pressure
| |
force |
Question 15 |
As we go higher above the earth’s surface, the atmospheric pressure.
increase | |
decrease |
Question 16 |
An Italian Scientist named _________
Issac Newton | |
Issac Assimov | |
Torricelli |
Question 17 |
Torricelli barometer was ______
oil | |
mercury |
Question 18 |
Friction is a _________
contact | |
Relative | |
Feild |
Question 19 |
As the mass of the body increases, the friction _________
increases | |
Decrease |
Question 20 |
Friction produces __________
air | |
Cold | |
heat |
Question 21 |
To move any object _______ is needed.
Force | |
effort | |
motion |
Question 22 |
In the international system of units, The unit of force in _______
newton(N) | |
Watt | |
Volt |
Question 23 |
To apply ________ on an object, we need to come in contact with the object.
Unit | |
force | |
Mass |
Question 24 |
The force caused by the action of muscles is known as __________
muscular force | |
frictional force | |
Mechanical force |
Question 25 |
The ______ force is always in a direction opposite to the direction of motion of the objects.
Mechanical | |
frictional | |
muscular force |
Question 26 |
Magnetic force is a ______ force.
non-contact | |
Contact | |
Field |
Question 27 |
The force exerted by a charged body on another charged or unchanged body is known as _______
electromagnetic | |
electrostatic | |
Electric |
Question 28 |
Force applied upon an object depends on the _______ on which it is acting.
pressure | |
area | |
volume |
Question 29 |
The SI unit of pressure is named after the scientist _______
Blaise Pascal | |
pascaline |
Question 30 |
Solids always exert pressure _________
downwards | |
Upwards |
Question 31 |
Liquid exerts equal pressure at the ______ depth.
Different | |
same |
Question 32 |
The earth is surrounded by __________ all around.
Water | |
Heat | |
air |
Question 33 |
The thick envelope of air around the earth is called the _________
Hydrosphere | |
atmosphere | |
climate |
Question 34 |
The pressure exerted by the air column above the earth is called _________
atmospheric pressure | |
hydrospheric pressure |
Question 35 |
The atmospheric pressure is not the _______ at all places.
same | |
different |
Question 36 |
Car brakes work on the principle of ________
Pascal’s law | |
newton's law |
Question 37 |
_________ is the force created whenever two surfaces move or try to move over each other.
traction | |
friction | |
temperature |
Question 38 |
Friction is less when the _________ is smooth.
atmosphere | |
surface |
Question 39 |
Match the following
- wheels and ball bearings a. non-contact force
- grooves b. based on Pascal’s law
- earth escavators c. increases friction
- fall of an apple from the tree d. decreases friction
4 3 2 1 | |
1 4 2 3 | |
2 4 3 1 | |
3 1 2 4 |
Question 40 |
Match the following
- Frictional force a. non-contact force
- Electrostatic force b. Pascal’s law
- Earth excavators c. contact force
- Sir Issac Newton d. fluids
- Liquids and gases e. force
5 1 3 4 2 | |
2 3 1 5 4 | |
4 5 2 3 1 | |
1 5 4 3 2 1 |
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There are 40 questions to complete.