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Quiz Physics

Total questions: 48

Worksheet time: 45mins

Name
Class
Date
1.
Which of these is a unit of work?
a)
Watt
b)
Meter
c)
Joule
d)
Newton
2.
Peanut ran 50 meters in 10 seconds.  What was Peanut's average speed?
a)
2 m/s
b)
5 km/h
c)
5 m/s
d)
5 m/s North
3.
When an object has a net force of 0 N, it is an example of what kind of force?
a)
Balanced
b)
Unbalanced
c)
Acceleration
d)
Gravity
4.
The force of __________________ is a type of friction that works against the motion of falling objects.
a)
Terminal Velocity
b)
Gravity
c)
Free Fall
d)
Air Resistance
5.
A force is a ____________________
a)
push or pull
b)
motion
c)
speed
d)
net force
6.
The net force is 
a)
The force you feel when you catch a fish in a net
b)
The force acting upward on a sky diver
c)
the combination of all of the forces acting on an object
d)
always unbalanced
7.
If you traveled to Jupiter, what would change?
a)
Your weight and mass
b)
your weight
c)
your mass
d)
your height
8.
Which of the options below is an example of velocity?
a)
20 m/s
b)
200 km/h
c)
20 m/s East
d)
20 East
9.
If a car is rolling down a ramp, the force between the tires and the ramp is an example of:
a)
Air resistance
b)
Kinetic Friction
c)
Static Friction
d)
Balanced Force
10.

What would you use to measure the length of a car

a)

Vernier caliper

b)

Measuring tape

c)

Scale

d)

Compass

11.

Which of the following is not a unit of distance ?

a)

Metre

b)

Feet

c)

Kilogram

d)

Kilometre

12.

The height of a person is 1.65 m. Express the height in cm

a)

165 cm

b)

16.5cm

c)

1650 cm

d)

1.65 cm

13.

The reading of the scale at one end is 3.0 cm and at the other end is 33.1 cm then the length of the is

a)

0.3 cm

b)

36.1 cm

c)

13.2 cm

d)

30.1 cm

14.

The unit you will use to measure the distance from Delhi to Patna is

a)

Centimetre

b)

Kilometre

c)

Millimetre

d)

Decimetre

15.

The standard unit of time is according to SI system is

a)

Minute

b)

Second

c)

Hour

d)

Day

16.

Convert 4.5 m into cm

a)

45 cm

b)

405 cm

c)

450 cm

d)

45 cm

17.

Convert 50 metre to kilometre

a)

50.0 km

b)

0.05 km

c)

150 km

d)

1.50 km

18.

Which of the following is a vector quantity?

a)

speed

b)

time

c)

velocity

d)

position

e)

distance

19.

What is the distance that the object travels in the first 5 seconds?

a)

4m

b)

5m

c)

9m

d)

20m

e)

It is impossible to tell.

20.
An object at rest will _______ if no outside forces are applied.
a)
Stay at rest
b)
Increase Velocity
c)
Decrease Mass
21.
A greater applied force is required to move an object with a greater mass than one with a smaller mass.
a)
True
b)
False
22.
The SI units for force are...
a)
Kilograms
b)
Newtons
c)
Meters per second
d)
Pounds
23.
If a baseball and a cannonball are dropped from the same height at the same time, which ball will hit the ground first?
a)
the cannonball
b)
the baseball
c)
The balls land at the same time.
d)
the ball with the larger volume
24.
A crumpled piece of paper hits the ground before a flat sheet of paper because
a)
the acceleration of gravity is greater on the  crumpled paper.
b)
there is more air resistance against the flat paper.
c)
the crumpled paper is more massive
d)
the crumpled paper is less massive.
25.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
26.
If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)
a)
The one with a mass of .78 kg will have the greatest acceleration.
b)
The one with a mass of .52 kg will have the greatest acceleration.
c)
They will both accelerate at the same rate.
27.
Who is the scientist who came up with the Laws of Motion?
a)
Sir Issac Newton
b)
The Greeks
c)
John Dalton
d)
Sir John Newt
28.
What law states an object at rest stays at rest unless acted upon by a net force or a moving object at a contant speed will continue to move in a straight at a constant speed?
a)
First
b)
Second
c)
Third
d)
Fourth
29.
What law describes how acceleration, mass and net force are related?
a)
First
b)
Second
c)
Third
d)
Fourth
30.
F=M X A goes with which law of motion?
a)
First
b)
Second
c)
Third
d)
Fourth
31.
Which law states that when one object exerts a force on a second object, the second object exerts a force on the first object?
a)
First
b)
Second
c)
Third
d)
Fourth
32.
Pushing on a wall is an example of which law of motion?
a)
First
b)
Second
c)
Third
d)
Fourth
33.
Kicking a football is an example of which law of motion?
a)
First
b)
Second
c)
Third
d)
Fourth
34.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
35.
A(n) __________ is a push or pull.
a)
newton
b)
acceleration
c)
force
d)
momentum
36.
A ____ force is the total force felt by an object.
a)
sum
b)
net
c)
strong
d)
balanced
37.
In order to be ____ forces, their effects must cancel each other out and not cause a change in an object's motion.
a)
balanced
b)
strong
c)
weak
d)
normal
38.

The unit of energy is?

a)

Watt

b)

Kilojoule

c)

Kilogramme

d)

Volt

39.

Complete the statement about the principal of Conservation of Energy.

Energy can be changed for one form to another but the total amount of energy

a)

always increases

b)

always decreases

c)

does not change

d)

varies according to the reaction

40.

Conservation of Energy Questions.

Example: A battery releases 100J of energy to a lamp. The lamp releases 80J of energy as light but it also releases heat energy. How much heat energy is released? Answer=20J ( If he total energy input is 100 and 80 is the output as light, that means that 20 J is left as heat 100J-80J=20J)..Now try these questions..

Question. A battery releases 200J of energy to a lamp. the energy is converted to heat and light. 50kJ is given out as heat. How much is released as Light?

a)

100J

b)

150J

c)

200J

d)

250J

41.

A Radio releases 250J of energy 10J is released as heat , How much is released as sound?

a)

200J

b)

220J

c)

240J

d)

260J

42.

A torch battery releases 50J of energy as heat and 240J as light, What is the total energy released from the battery?

a)

250J

b)

280J

c)

290J

d)

300J

43.

The % energy efficiency of an appliance is

a)

total energy input/ useful energy output x 100

b)

useful energy output /total energy input x100

c)

total energy input x useful energy input x100

d)

useful energy output /total energy input x50

44.

In a filament bulb the electical power input is 40W andthe light (Useful) energy output is 4W. What is the % efficiency?

a)

1%

b)

10%

c)

0.1%

d)

4%

45.

In a modern low energy bulb, the the electrical power input is 12W and the Light (useful) power output is 4W. What is the energy efficiency of this bulb?

a)

3%

b)

25.5%

c)

30%

d)

33.3%

46.

look at the last two questions Suggest why modern bulbs are more efficient? (There is more than one correct answer)

a)

They do not need as big an energy input

b)

They are not as bright

c)

There is less wasted energy

d)

They release less heat.

47.

This one is harder.. you need to decide what is the 'useful' energy output.

A TV takes in 600J of electrical energy and gives out 300J of light, 240J of sound and 60J of heat energy (be careful here!

a)

9%

b)

60%

c)

90%

d)

85%

48.

(Higher level only)What is the Formula to calculate energy transfer for Kinetic Energy?

a)

Ek=1/2 mv2

b)

1/2mv=k

c)

Em2=1/2k

d)

EK2 =2mv

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