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Physics knowledge KS3-4

Total questions: 97

Worksheet time: 3hrs 56mins

Name
Class
Date
1.

What is it?

a)

Speed

b)

Velocity

c)

Acceleration

2.

What is it?

a)

Speed

b)

Velocity

c)

Acceleration

3.

What is it?

a)

Speed

b)

Velocity

c)

Acceleration

4.
What is the formula to calculate speed?
a)
Speed = time/distance
b)
Speed = distance/time
c)
Speed = distance x time
d)
Speed = time x distance
5.
A roller coasters accelerates from an initial velocity of of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?
a)
24 m/s2
b)
18 m/s2
c)
16 m/s2
d)
16 m/s
6.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

7.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

8.

Describe the motion in the graph:

a)

Constant Speed (positive slope)

b)

Stopped (at rest)

c)

Acceleration (increasing speed)

d)

Return Home (negative slope)

9.

At 60 seconds, how far had this object traveled?

a)

0 m

b)

10 m

c)

20 m

d)

40 m

10.

Which graph below shows 2 runners moving at the same speed?

a)
b)
c)
d)
11.

If the net force is equal to zero, the forces acting on the object are

a)

balanced

b)

unbalanced

12.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
13.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
14.

Match the description to the graph:

"The car is slowing down."

a)
b)
c)
d)
15.
What is the anticlockwise moment acting on this crane?
a)
80,000Nm
b)
100,000Nm
c)
120,000Nm
d)
140,000Nm
16.
What is the moment acting on the seesaw?
a)
1.6Nm
b)
15Nm
c)
16N
d)
4Nm
17.
A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?
a)
The larger person moving further away from the center.
b)
Moving the smaller person closer to the center.
c)
Moving the smaller person further from the center.
d)
Making the larger person do nothing.
18.
The easiest way to open a heavy door  is by applying the force
a)
Near the hinges
b)
In the middle of the door
c)
At the edge of the door far from the hinges
d)
At the top of the door
19.

Moment can be calculated using the equation:

a)

M = F × d

b)

M = F / d

c)

M = F2 × d

d)

M = F / d2

20.
If a puppy runs across a park at a speed of 15 m/s. The puppy also has a time of 5 seconds. How far did the puppy run?
a)
75m
b)
3m
c)
0.33 m
21.

the gradient of a distance-time graph

a)

velocity (speed)

b)

aceleration

c)

stationary

d)

constant

22.

the gradient of a velocity-time graph

a)

velocity (speed)

b)

aceleration

c)

stationary

d)

constant

23.
What happens when two forces act in the same direction?
a)
They cancel each other out.
b)
The stronger one prevails.
c)
Their strengths are added.
d)
Their sum divided by the two is the total force.
24.

What is Relative Motion?

a)

The change in an object's position compared to another object's position

b)

The change in an objects directions.

25.
Hooke's Law fails when a material reaches its:
a)
breakdown
b)
elastic limit
c)
end of tether
d)
fracture stress
26.
If F is force, k is spring constant and x is extension, Hooke's Law tells us that:
a)
F=k/x
b)
x=Fk
c)
k=Fx
d)
F=kx
27.
Hooke's Law describes the behaviour of which kind of material under tension?
a)
plastic
b)
metals only
c)
elastic
d)
non-metals only
28.
Which statement most accurately represents Hooke's Law?
a)
a) Extension of a spring is proportional to the force applied.
b)
b) Extension of a spring is proportional to the number of coils.
c)
c) Extension of a spring is inversely proportional to the force applied.
d)
d) Thickness of a spring wire is proportional to the force applied.
29.

At point P, _______.

a)

the force applied to the spring is equal to its elongation

b)

Hooke's Law ceases to be valid

c)

the spring is can be stretched but still springs back into shape reversibly

d)

the spring constant increases

30.
A spring extends 1.5m under load 10N. What is its spring constant?
a)
0.15N/m
b)
10N/m
c)
6.7N/m
d)
15N/m
31.

How much work is done on an object if the amount of force applied is 50 N and the object was displaced by 2 meters from its original position?

a)

100 J

b)

25 J

c)

100 W

d)

25 W

32.

what is the formula needed to solve for work?

a)

w=f/d

b)

w= fd

c)

w=f+d

33.

What is the crest of a wave?

a)

A. The lowest point of a wave

b)

B. The highest point of a wave?

c)

C. The length of a wave

d)

D. The height of a wave?

34.

What is the trough of a wave?

a)

A. The lowest point of a wave

b)

B. The highest point of a wave?

c)

C. The length of a wave

d)

D. The height of a wave?

35.

What is label A?

a)

A. Wavelength

b)

B. Amplitude

c)

C. Trough

d)

D. Crest

36.

What is label B?

a)

A. Wavelength

b)

B. Amplitude

c)

C. Trough

d)

D. Crest

37.

Which wave in the diagram has the greatest frequency?

a)

1

b)

2

c)

3

d)

4

38.

Which wave in the diagram has the greatest wavelength?

a)

1

b)

2

c)

3

d)

4

39.
Which wave is pictured?
a)
Transverse
b)
Longitudinal
c)
Both
d)
Neither
40.
Sound needs a medium to travel through.  What is a medium?
a)
solid, liquid, gas
b)
open space
c)
waves
d)
nothing
41.

When a wave bounces off of something and moves in a different direction

a)

reflection

b)

refraction

c)

absorption

d)

propagation

42.

What kind of waves are light waves?

a)

Longitudinal waves

b)

Electrons

c)

Transverse Waves

43.
The illustration shows a light ray striking an object.
In the illustration, the light ray striking the object is-
a)
absorbed
b)
stopped
c)
reflected
d)
refracted
44.
a)
Reflection
b)
Refraction
45.
Does the frog reflect or absorb green?
a)
Reflect
b)
Absorb
46.
Does the bird reflect or absorb orange?
a)
Reflect
b)
Absorb
47.
The number of waves that pass in a certain amount of time is called
a)
frequency
b)
wavelength
c)
crest
d)
amplitude
48.
What kind of wave is this?
a)
Transverse
b)
Longitudinal
49.

In this diagram, which is the angle of incidence?

a)

Angle A

b)

Angle B

c)

Angle C

d)

Angle D

50.

When light rays strike a rough surface, they are:

a)

scattered.

b)

focused.

c)

absorbed.

d)

refracted.

51.

What is it called when light waves enter a substance?

a)

refraction

b)

reflection

c)

energy

d)

absorption

52.

When light bounces off something it is known as _____________

a)

reflection

b)

refraction

c)

light energy

d)

mechanical energy

53.

What color of the rainbow has the longest wavelength?

a)

red

b)

blue

c)

green

d)

violet

54.

Why does this car appears red under a white light?

a)

The car is absorbing the red light and reflecting the blue and green.

b)

The car is reflecting only the red light while absorbing the blue and green.

c)

The car is absorbing the red and green light while reflecting the blue.

d)

The car is absorbing the red, blue and green, but our eyes can only see the red.

55.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
56.
what is this symbol for?
a)
light bulb
b)
cell
c)
battery
d)
resistor
57.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
58.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
59.
This is the circuit symbol for ...
a)
an AC current source
b)
a DC current source
c)
an ammeter
d)
a voltmeter
60.
This is the symbol for 
a)
An Ammeter
b)
A Voltmeter
c)
A Meter
d)
A Motor
61.
This is the symbol for a _____?
a)
Lamp
b)
Water wheel
c)
Loudspeaker
d)
Motor
62.
a)
Closed switch
b)
Push switch
c)
Trap door
d)
AC Power supply
63.
This is the symbol for 
a)
Variable resistor
b)
Thermistor
c)
Resistor
d)
Fuse
64.
Choose the corrrect sentence.
a)
This circuit will work because it is an open circuit
b)
This circuit will work because it is a closed circuit.
c)
This circuit will NOT work because it is an open circuit.
d)
This circuit will NOT work because it is a closed circuit.
65.
What kind of circuit is this?
a)
series
b)
parallel
66.
Which statement is true?
a)
The light bulb will light up because the  circuit is complete.
b)
The light bulb will light up because the  circuit is broken.
c)
The light bulb will not light up because the  circuit is complete.
d)
The light bulb will not light up because the  circuit is broken.
67.
This picture is an example of what kind of circuit?
a)
Series
b)
Complete
c)
Broken
d)
Parallel
68.
current is measured in....
a)
volts
b)
amps
c)
watts
d)
mph
69.
Voltage is measured in __.
a)
volts.
b)
watts.
c)
coulombs. 
70.

Where would you place a voltmeter in the circuit?

a)

Green ?

b)

Red ?

71.
a)
A2 = A3
b)
A2 + A3 = A1
c)
A1 + A2 = A3
d)
A4 = A2 - A3
72.

In a series circuit, there are multiple paths for current to flow.

a)

True

b)

False

73.

____________ __________ assumes that current flows out of the positive side of the battery, through the circuit, and back to the negative side of the battery.

a)

Conventional Current

b)

Ohms Law

c)

Electron Flow

d)

Kirchoff's Current Law

74.
If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that
a)
friction destroyed electrons in the rod.
b)
the silk has become negatively charged.
c)
protons have moved to the rod.
d)
glass attracts more protons.
75.
Objects that have opposite charges
a)
are attracted to each other, and the force between the objects pulls them together.
b)
are attracted to each other, and the force between the objects pushes them apart.
c)
are repelled by each other, and the force between the objects pulls them together.
d)
are repelled by each other, and the force between the objects pushes them apart.  
76.
A magnet will pick up a nail, but not a penny because the nail
a)
has rust on it.
b)
is lighter than the penny.
c)
has a sharp point.
d)
contains iron.
77.
Which is NOT a use of magnets?
a)
Generating electricity
b)
Holding cabinet doors closed
c)
Sorting paper from plastic
d)
Storing information on computer hard drives.
78.
The magnet's shown will
a)
not move
b)
attract
c)
repel
d)
all of the above
79.
The magnet's shown will
a)
not move
b)
attract
c)
repel
d)
all of the above
80.
All magnets have 2
a)
fields
b)
colors
c)
poles
d)
all of the above
81.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
82.
Why does a compass needle point north?
a)
The compass is a bar magnet
b)
Because north is up
c)
Because it's magic
d)
It lines up with the Earth's magnetic field
83.

Mercury is the closest planet to the Sun.

a)

True

b)

False

84.

In the order of the planets, Earth comes after which other planet?

(a)  

85.

The Earth rotates around the sun.

a)

False

b)

True

86.

Which of these planets are gas giants?

a)

Neptune

b)

Venus

c)

Uranus

d)

Mercury

87.
When Your Body Goes Inside A Black Hole The Stretching effect is called what
a)
spaghettification
b)
stretchification 
c)
longification
d)
sausageification
88.

We live in the...

a)

Andromeda Galaxy

b)

Milky Way Galaxy

c)

Pleiades Star Cluster

d)

Seven Sisters

89.

How are black holes created?

a)

When a massive star implodes

b)

From a gamma ray burst

c)

From a nebula of gas and dust in space

d)

From nothing in interstellar space

90.

What moon phase would be seen from position number 5?

a)

New Moon

b)

1st Quarter

c)

Full Moon

d)

3rd Quarter

91.

Which positions would you find a crescent moon?

a)

4 and 8

b)

2 and 6

c)

4 and 6

d)

2 and 8

92.

Which location would have the longest daylength (ignore location D as an answer)?

a)

A.

b)

B.

c)

C.

93.

How long does it take for the Earth to make one full revolution around the sun?

a)

28 Days

b)

24 Hours

c)

1 Month

d)

365 1/4 Days

94.

What is the main reason there are different seasons on Earth?

a)

Earth's Tilt

b)

Earth's Distance from the Sun

c)

Earth's Orbit

d)

Random Chance

95.

Which of these objects exerts a gravitational pull? (Click all that apply.)

a)

The Sun

b)

The Earth

c)

The Moon

d)

your pencil

e)

a fly

96.

WHY does the Sun create a LARGER gravitational field than the Earth?

a)

The Sun has more magnetism than the Earth and this creates a larger gravitational field

b)

The Sun is hotter than the Earth and this creates a larger gravitational field.

c)

No one knows why

d)

The Sun has more MASS than the Earth, so it creates a larger gravitational field than the earth does.

97.

What is the equation that links gravitational field strength (g), mass (m) and weight (W)?

a)

Weight = Mass x Gravitational Field Strength, or W=mg

b)

Weight = Mass / Gravitational Field Strength, or W=m/g

c)

Weight = Gravitational Field Strength / Mass, or W=g/m

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