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force and pressure grade 8

Total questions: 11

Worksheet time: 7mins

Name
Class
Date
1.

1 kilogram weight is equal to

a)

98 N

b)

9.8 N

c)

0.98 N

d)

0.098 N

2.

It is easier to cut vegetables with sharp end of knife rather than with its blunt end because

a)

Smaller area provides more pressure for the applied force

b)

smaller area provides less pressure for the applied force.

c)

none of the above

3.

Two tyres of a tractor are very wide and huge because

a)

pressure increase when area increases

b)

pressure reduces when area increases

c)

none of the above

4.
What is the unit of measurement for pressure?
a)
pascal
b)
grams
c)
milliters
d)
meters
5.
If the horse reared up on 2 legs what effect would it have on the pressure?
a)
it will exert half the pressure it did before
b)
it will exert the same pressure it did before
c)
it will exert twice the pressure it did before
d)
it will exert four times the pressure it did before
6.
Pressure can be measured in Pascales (Pa) or Newtons per square metre.
1 Pa = 1N/m2
a)
True
b)
False
7.
Army tank tracks are useful for travelling through the mud because..
a)
they decrease the force the vehicle exerts on the ground
b)
they increase the force the vehicle exerts on the ground
c)
they decrease the pressure the vehicle exerts on the ground
d)
they increase the pressure the vehicle exerts on the ground
8.

which force is non contact force

a)

gravitational

b)

magnetic

c)

electrostatic

d)

all of the above

9.
Pressure decreases when the surface area over which a force is applied increases
a)
True
b)
False
10.

A pressure of 10kPa acts on an area of 0.3 m2. The force acting on the area will be

a)

3000 N

b)

30 N

c)

3 N

d)

300 N

11.

Effects of Force are _____

a)

It may make an object move from rest.

b)

It may change the speed of an objecti if it is moving.

c)

It may change the direction of motion

of an object.

d)

It may bring about a change in the

shape of an object.

e)

It may cause some or all of these effects