Page 70 - Innovator's Science-8

Put on your

Thinking cap Problem Solving Skills

A. Darken the correct options in the OMR Sheet:
OMR Sheet
1. Which of the following is an example of non-contact force?
a. Pulling a rickshaw b. Li ing a bucket

c. Kicking a football d. Falling of a stone
2. Force that acts between two objects when they are in physical contact with Wrong Methods
each other is:
Correct Method
a. non-Contact force b. gravita onal force
c. contact force d. none of these
1. a b c d
3. It is also called as the biological force:
a. Mechanical force b. Muscular force 2. a b c d
c. Magne c force d. Gravita onal force

4. The SI unit of weight is : 3. a b c d
a. Jule b. Newton 4. a b c d
c. Mole d. Ampere
5. The mass of an object can be found by measuring its ___________. 5. a b c d

a. length b. meter
6. a b c d
c. weight d. balance
6. When a footballer kicks the ball. This force is called ____________. 7. a b c d

a. Muscular force b. Fric onal force
c. Mechanical force d. Contact force
7. The force exerted by the Earth on all objects is called _____________.
a. Gravita onal force b. Magne c force

c. Electrosta c force d. Muscular force Problem Solving Skills

B. Match the following.
1. Muscular force a. Upward force by a liquid
2. Fric on b. Pull of earth on an object

3. Magne c force c. Force due to muscles in human/animals
4. Weight d. Opposes mo on between surface in contact
5. Buoyant force e. Acts at a distance between magnets.

C. Fill in the blanks.
Observational Skills
1. __________ is defined as the force ac ng per unit area.

2. __________ measures the pressure exerted by liquids.
3. Atmospheric pressure is measured using a __________.
4. Force can change the shape, size or __________ of an object.

5. The SI unit of force is __________.

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Science-8