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Physics Quiz / Term 2

Total questions: 25

Worksheet time: 16mins

Name
Class
Date
1.

According to Newton's law of gravitation, the Earth and the Moon are gravitationally attracted to each other. The more massive Earth attracts the Moon with...

a)

a stronger force than the Moon attracts the Earth.

b)

a weaker force than the Moon attracts the Earth.

c)

the same force as the Moon attracts the Earth.

d)

a force that is sometimes stronger and other times weaker than the Moon attracts the Earth.

2.

which are the following is Newton’s Law of gravitation ?

a)

W=GMmrW=\frac{GMm}{r}

b)

F =GMmr2F\ =\frac{GMm}{r^2}

c)

V =GMrV\ =\sqrt{\frac{GM}{r}}

d)

g=− GMrg=-\ \frac{GM}{r}

3.

Newton said that any two masses will...

a)

combine into a larger mass.

b)

attract each other.

c)

create gravitational fields.

d)

push each other apart.

4.

If mass of Neil Armstrong was recorded as 60kg on Earth, what would it have been on Moon ?

a)

10kg

b)

360 kg

c)

60kg

d)

6kg

5.

If the weight of Neil Armstrong was recorded on the moon as 15N, what would it be on earth ?

a)

2.5N

b)

90N

c)

15N

d)

120N

6.

Gravitational forces are:

a)

always attractive

b)

always repulsive

c)

sometimes attractive and sometimes repulsive

d)

None of these

7.

Which of the following is the evidence to show that there must be a force acting on earth and directed towards the sun:

a)

deviation of the falling bodies towards east

b)

revolution of earth around the sun

c)

phenomena of day and night

d)

apparent motion of sun round the earth

8.

The mass of the moon is about 1.2% of the mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on earth:

a)

Is the same

b)

Is smaller

c)

Is greater

d)

Varies with its phase

9.

Where will it be profitable to purchase 1 kg sugar (by spring balance)

a)

At poles

b)

At equator

c)

At 45° latitude

d)

At 60°latitude

10.

The acceleration due to gravity at pole and equator can be related as:

a)

gp < ge

b)

gp = ge = g

c)

gp < ge = g

d)

gp > ge

11.

What will happen to the gravitational acceleration of an object if the object is moving from surface of the planets to the outer space?

a)

increases

b)

decreases

c)

unchanged

d)

increase, then decrease

12.

There is a car moving on a circular path. Which of the following can explain the above situation?

a)

A force acts in opposite direction with car's weight.

b)

A force acts as centripetal force towards the centre of circle.

c)

A force acts in the direction of movement.

d)

A force acts away from the centre of circle.

13.

A student turns on flashlight. What is the energy conservation that happen there?

a)

chemical - light - electrical

b)

electrical - chemical - light

c)

chemical - electrical - light

d)

light - chemical - electrical

14.

A car has speed 5 m/s and the mass of the car 1000 kg. What is the kinetic energy of the car?

a)

12500 J

b)

25000 J

c)

5000 J

d)

2500 J

15.
Calculate the KE of a runner that has a mass of 80 kg and is running at a velocity of 8 m/s
a)
5120 J
b)
320 J
c)
640 J
d)
2560 J
16.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
17.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
18.

Energy can only be created or destroyed, not converted from one form to another.

a)
true
b)
false
19.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
20.
3. Calculate the PE of a 2 kg cat perched 10 meters above the ground. 
a)
20 J
b)
200 J
c)
2.04 J
d)
200 W
21.
2 balls of equal mass roll down opposite sides from the top of a frictionless hill. Regardless of the path they take, what will the velocity of the balls be when they hit the ground?
a)
Same
b)
Different
c)
Not enough information
22.
When my velocity triples, my kinetic energy increases by ______ times.
a)
9
b)
 3 
c)
1.5
d)
4.5
23.
If height above the ground increases 4 times, how much does your potential energy (PE) change?
a)
16 times
b)
4 times
c)
2 times
d)
No change
24.

1 kWh is equal to ______

a)

3600000W

b)

3600000J

c)

360000J

d)

360000W

25.

Energy and Work are measured in....

a)

meters

b)

grams

c)

joules

d)

time

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