WorksheetsG8-PHY-L2 Friction
Total questions: 20
Worksheet time: 10mins
Name
Class
Date
1.
What is friction?
a)
A force that attracts objects to each other
b)
A force that opposes the motion of objects
c)
A force that pushes objects apart
d)
A force that causes objects to spin
2.
What causes friction?
a)
Smooth surfaces
b)
Rough surfaces
c)
No surfaces
d)
Friction is not caused by surfaces
3.
What happens to friction if the two surfaces are pressed harder?
a)
Friction increases
b)
Friction decreases
c)
Friction stays the same
d)
Friction disappears
4.
What is the force required to overcome friction when an object starts moving?
a)
Static friction
b)
Sliding friction
c)
Rolling friction
d)
Fluid friction
5.
What is the force required to keep an object moving with the same speed?
a)
Static friction
b)
Sliding friction
c)
Rolling friction
d)
Fluid friction
6.
Why is friction important in our daily lives?
a)
It helps us move objects easily
b)
It helps us hold objects firmly
c)
It helps us generate heat
d)
All of the above
7.
How can friction be increased?
a)
By making surfaces smooth
b)
By reducing the force applied
c)
By using lubricants
d)
By making surfaces rough
8.
Why are the soles of shoes and the tires of vehicles treaded?
a)
To reduce friction
b)
To increase friction
c)
To eliminate friction
d)
To make them look stylish
9.
What is the resistance to the motion of an object called when it rolls over another body?
a)
Static friction
b)
Sliding friction
c)
Rolling friction
d)
Fluid friction
10.
What is the common name for gases and liquids?
a)
Fluids
b)
Solids
c)
Particles
d)
Substances
11.
Why do objects moving in fluids have special shapes?
a)
To reduce friction
b)
To increase friction
c)
To generate heat
d)
To make them look attractive
12.
What is the force that opposes the motion of objects through fluids called?
a)
Static friction
b)
Sliding friction
c)
Rolling friction
d)
Fluid friction
13.
What can friction produce?
a)
Heat
b)
Light
c)
Sound
d)
Electricity
14.
What is the purpose of using lubricants?
a)
To increase friction
b)
To reduce friction
c)
To eliminate friction
d)
To make surfaces rough
15.
Why are ball bearings used in machines?
a)
To increase friction
b)
To reduce friction
c)
To eliminate friction
d)
To make surfaces rough
16.
What is the force that opposes the motion of objects called when they are sliding over each other?
a)
Static friction
b)
Sliding friction
c)
Rolling friction
d)
Fluid friction
17.
What happens to friction when objects move through fluids?
a)
Friction increases
b)
Friction decreases
c)
Friction stays the same
d)
Friction disappears
18.
What can friction cause to happen when objects move through fluids?
a)
Objects lose energy
b)
Objects gain energy
c)
Objects change shape
d)
Objects become lighter
19.
What can friction cause to happen when objects move through fluids?
a)
Objects lose energy
b)
Objects gain energy
c)
Objects change shape
d)
Objects become lighter
20.
What can friction cause to happen when objects move through fluids?
a)
Objects lose energy
b)
Objects gain energy
c)
Objects change shape
d)
Objects become lighter
100 %
