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Y8 PHYSICS REVISION

Total questions: 239

Worksheet time: 5hrs 33mins

Name
Class
Date
1.

What is force?

a)

Push or pull

b)

effort

c)

push

d)

pull

2.

Which act of force is best to describe the action in the picture?

a)

Make an object move

b)

Make a moving object stop

c)

Change the speed of a moving object

d)

Change the shape of on object

3.

What do you use to measure force?

a)

Spring balance

b)

Newton spring balance

c)

Weighing scale

d)

Thermometer

4.

The following forces are involve in the activity (picture), except ______________.

a)

Frictional force

b)

Gravitational force

c)

Strain force

d)

Electromagnetic force

5.

The following list are classified under contact force, except _______________.

a)

Impact force

b)

Strain force

c)

Friction

d)

Gravitational force

6.

Tension is applied in __________ , ___________ , and __________ .

a)

spring, rope, spring

b)

ball, spring, rope

c)

wood, metal, ball

d)

spring, rope, cloth

7.

Which of these surface will produce the greatest friction?

a)

Rusty

b)

Waxy

c)

Mosaic

d)

Sandy

8.

__________ and ____________ will causes less friction to occur.

a)

Water, oil

b)

Wheel, thread

c)

Cement, parachute

d)

Oil, rain

9.

The following statements are ways to increase friction, except ____________________.

a)

tires thread

b)

braking pads

c)

engine oil

10.

A car is traveling along a road at 112 km/h when a tree falls across the road at 100 m away. What would probably happen?

a)

The car will stop before the fallen tree.

b)

The car will hit the tree.

c)

The car will stop.

d)

The car will reverse.

11.

The following method will help to minimize water resistance, except ___________ .

a)

hull shape of the boat

b)

hydrofoil

c)

streamlined shape

d)

wide rectangular boat

12.

Magnet will attract these magnetic material, except ____________.

a)

steel

b)

graphite

c)

nickel

d)

cobalt

13.

What is the gravitational field strength (N/kg) of the Earth?

a)

10

b)

15

c)

1

d)

3.3

14.

What is the weight of 6.2 kg on Earth?

a)

62 N

b)

0.62 N

c)

6.2 N

d)

2.99 N

15.

What is the weight of 10 kg rice on Mercury?

a)

38 N

b)

3.8 N

c)

0.38 N

d)

100 N

16.

A spring is 5 cm long when it is unstretched but it becomes 7 cm when a mass is hung to it. What is the extension of the spring?

a)

2 cm

b)

5 cm

c)

14 cm

d)

3 cm

17.

One bar of the metal is weighed 50 g and causes extension of 2 cm to the spring. What will be the extension of 5 bar of metal?

a)

10 cm

b)

5 cm

c)

8cm

d)

7cm

18.

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

a)

10 m/s

b)

1000 m/s

c)

100 seconds

d)

10 seconds

19.
Which of the following is a unit of time?
a)
sec
b)
mi
c)
m/s
d)
km
20.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
21.
What is speed?
a)
how far you go
b)
how much distance is covered over a period of time
c)
how fast you accelerate
d)
the change in the location of a object
22.
How would decreasing the time it takes you to run a certain distance affect your speed? Speed will...
a)
Increase
b)
Decrease
23.

How would you calculate the average speed of a student that is able to run 20 meters in 8 seconds?

a)

20 ÷ 8

b)

20 × 8

c)

8 ÷ 20

d)

8 - 20

24.

How would you calculate the average speed of a ball if it rolls a distance of 5 meters in a time of 10 seconds?

a)

5 ÷ 10

b)

5 × 10

c)

10 ÷ 5

d)

10 + 5

25.

30 seconds is equal to

a)

1 minute

b)

0.5 minute

c)

3 minutes

d)

2 minutes

26.

Distance =

a)

Time ÷ Speed

b)

Speed ÷ Time

c)

Speed x Time

d)

Time + Speed

27.

30 minutes is equal to

a)

1 hour

b)

0.5 hour

c)

3 hours

d)

2 hours

28.

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?

a)

10 m/s

b)

1000 m/s

c)

100 seconds

d)

10 seconds

29.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
30.
What is the moment produced by the 15 N?
a)
15 Nm (clockwise)
b)
150 Nm (anti - clockwise)
c)
1.5 Nm (anti - clockwise)
d)
0.15 Nm (clockwise)
31.
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
32.

A moment is...

a)

a force measured in Newtons

b)

a turning force measured in newton metres

c)

a distance measured in metres

d)

a time intervals measured in clicks

33.
Balanced or unbalanced?
a)
balanced
b)
unbalanced
34.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
35.

The SI unit of moment of force is –

a)

m

b)

N

c)

kgf

d)

Nm

36.

Moment can be calculated using the equation:

a)

M = F × d

b)

M = F / d

c)

M = F2 × d

d)

M = F / d2

37.

How do we find distance?

a)

speed ÷ time

b)

speed x time

c)

time + speed

d)

time - speed

38.

How do we find time?

a)

distance x speed

b)

speed - distance

c)

distance ÷ speed

d)

speed + distance

39.

How do we find speed?

a)

time x distance

b)

time - distance

c)

distance + time

d)

distance ÷ time

40.

A train travels at 52 km/h. How far does it travel in

15 min?

a)

780 m

b)

780 km

c)

13 m

d)

13 km

41.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
42.

When was the object sitting still?

a)

between 5 and 6 seconds

b)

between 2 and 5 seconds

c)

between 1 and 2 seconds

d)

between 0 and 1 second

43.

Match the graph to the description:

"The car is slowing down."

a)
b)
c)
d)
44.
a)

Accelerating gradually

b)

Stopping

c)

Slowing down constantly

d)

Speeding up constantly

45.

What line has the greatest speed?

a)

Line A

b)

Line B

c)

Both

d)

Neither

46.

A force that changes an object’s motion, direction, or speed

a)

Balanced forces

b)

Force

c)

Unbalanced forces

d)

All of the above

47.

Calculate the missing force so that the beams are in equilibrium.

(a)  

48.

Pressure is force per unit area. What is the SI unit for pressure?

a)

N

b)

Nm

c)

Pa

d)

kPa

49.

Choose two correct applications that exert high pressure.

a)

Tractors have big and wide wheels

b)

Press a thumbtack into a plank

c)

Studs on the sole of football boots

d)

Shoulder pad for a school bag

50.

Choose two factors that affect air pressure

a)

mass

b)

volume

c)

area

d)

temperature

51.

Magdeburg Hemisphere, straw, syphon, and vacuum cleaner are some of the applications of .........

a)

buoyant force

b)

liquid pressure

c)

air pressure

d)

density

52.

Atmospheric pressure depends on .......

a)

mass

b)

density

c)

altitude

d)

magnitude

53.

When a diver dives deeper into the ocean, he will experience ...................... liquid pressure

a)

greater

b)

less

c)

no

54.

Amira puts two books on a table as shown in the diagram. The books are the same size and mass. Which book exerts greater pressure on the table?

a)

A

b)

B

55.

Will air pressure be higher on top of a mountain or on the beach?

a)

beach

b)

mountain

c)

It's always the same

56.

What pressure will be exerted by a 10 N box that has equal sides of 1 meter?

a)

1 Pa

b)

2 Pa

c)

5 Pa

d)

10 Pa

e)

20 Pa

57.

The higher the temperature, the .................................. the movement of air particles.

a)

slower

b)

faster

c)

neither

d)

same

58.
What happens to pressure as you go deeper under water?
a)
it increases
b)
it decreases
c)
it stays the some
d)
no soup for you!
59.
Arrange the density of spheres, W, X, Y and Z, in descending order.
a)
X, Y, W, Z
b)
Y, X, W, Z
c)
X, W, Y, Z
d)
W, Z, X, Y
60.
Where is pressure the greatest on the dam?
a)
D
b)
C
c)
B
d)
A
61.

An object will sink in a fluid if

a)

gravity is stronger than buoyant force

b)

buoyant force is stronger than gravity

c)

a fluid can be a gas or a liquid

d)

if the object is solid

62.
What is the equation for pressure?
a)
Pressure = Force / Surface area
b)
Pressure = Force x Surface area
c)
Pressure = Force + Surface area
d)
I have a 6 foot squirrel named Antney
63.

An object weighing 30 N displaces a volume of water with a weight 20 N. What will the object do?

a)

It will sink

b)

It will float

c)

It will fly

d)

None of these answers

64.
An object will float in water when the buoyant force equals the object's ___________________.
a)
density
b)
weight
c)
pressure
d)
depth
65.

Buoyancy is the ability to

a)

Sink

b)

Float

66.

Negative buoyancy (object's weight is stronger) means an object will

a)

sink

b)

float

67.
Where would you find the largest pressure?
a)
At the bottom of the ocean
b)
At the top of Mt Everest
c)
Close to ground on the Scotch oval
d)
In a rockpool on the Great Barrier Reef
68.

When you increase your depth under water, the water pressure on your body

a)

increases

b)

decreases

c)

stays the same

69.

Diagram shows the design of a dam. Why does the thickness of the dam increase with its depth?

a)

The design of this structure is stronger.

b)

Water pressure increases with depth.

c)

The cost of construction is lower.

d)

Water pressure acts uniformly in all directions.

70.

What is pressure?

a)

The amount of force exerted on a surface

b)

The surface area of an object

c)

The weight of an object

71.

An object will float on water if it is

a)

less dense than water.

b)

more dense than water.

c)

the same density as water.

72.
Buoyancy is the tendency for objects to float in a fluid. Buoyancy pushes the opposite direction of...
a)
waves push.
b)
magnetic pull.
c)
the wind.
d)
gravity's pull
73.
Diagram 10 shows a diver in the sea
Which physical quantity will increase when the diver dives deeper?
a)
Pressure
b)
Buoyant Force
c)
Atmospheric pressure
d)
Gravitational field strength
74.
Which of the following diagrams shows the best design for the wall of a reservoir?
a)
A
b)
B
c)
C
d)
D
75.
Objects A-D are in water. Which is the most dense?
a)
A
b)
B
c)
C
d)
D
76.
What does pressure measure?
a)
Strength
b)
Force exerted on a given area of surface
77.

How do you Calculate Pressure

a)

Force(N)/Area(m2)

b)

Force(kg)/Area(mi2)

c)

Area(m2)/Force(N)

78.
What are all materials made up of?
a)
Particles
b)
Carbon
c)
Wood
d)
Ions
79.
What is the definition of an element?
a)
A pure substance
b)
A pure substance like water
c)
A pure substance, containing only one type of atom
d)
A substance that only has one atom
80.
What are the correct properties to describe a solid?
a)
Can flow, can be compressed
b)
Can't flow, can't be compressed, has no fixed shape
c)
Can't flow, can't be compressed, has a fixed shape
81.
What are the correct properties to describe a liquid?
a)
Can't flow, can't be compressed, has no fixed shape
b)
Fills the shape of the container, can't flow
c)
Fills the shape of the container, can flow, cannot be compressed
82.
What are the correct properties to describe a gas?
a)
Can't flow, can't be compressed, has no fixed shape
b)
Fills the shape of the container, cannot be compressed
c)
Can flow, fills the shape of the container and can be compressed
83.
These particles show the arrangement of particles in a:
a)
Solid
b)
Liquid
c)
Gas
84.
These particles show the arrangement of particles in a:
a)
Solid
b)
Liquid
c)
Gas
85.
These particles show the arrangement of particles in a:
a)
Solid
b)
Liquid
c)
Gas
86.
Which change of state describes the change from a liquid to a solid?
a)
Melting
b)
Freezing
c)
Boiling
d)
Evaporation
87.
Which change of state describes the change from a solid to a liquid?
a)
Melting
b)
Freezing
c)
Boiling
d)
Evaporation
88.
Which change of state describes the change from a solid straight to a gas?
a)
Melting
b)
Freezing
c)
Boiling
d)
Sublimation
89.
Which change of state describes the change from a liquid to a gas?
a)
Melting
b)
Condensation
c)
Boiling
d)
Sublimation
90.
Which change of state describes the change from a gas to a liquid?
a)
Melting
b)
Condensation
c)
Boiling
d)
Sublimation
91.
If a substance had a melting point of 100⁰C, what state would it be in at room temperature?
a)
Solid
b)
Liquid
c)
Gas
92.
If a substance had a melting point of -12⁰C and a boiling point of 200⁰ what state would it be in at room temperature?
a)
Solid
b)
Liquid
c)
Gas
93.
If a substance had a boiling point of -12⁰C, what state would it be in at room temperature?
a)
Solid
b)
Liquid
c)
Gas
94.
If a substance had a melting point of 54⁰C boiling point of 68⁰C, what state would it be in at room temperature?
a)
Solid
b)
Liquid
c)
Gas
95.
Which is the highest temperature?
a)
12⁰C
b)
118⁰C
c)
-2⁰C
d)
-264⁰C
96.
Which is the lowest temperature?
a)
12⁰C
b)
118⁰C
c)
-2⁰C
d)
-264⁰C
97.
What terms describes the movement of particles from a high concentration to a low concentration?
a)
Evaporation
b)
Melting
c)
Diffusion
d)
Freezing
98.
Can diffusion occur in solids?
a)
Yes
b)
No
99.
What is the correct chemical symbol for sodium?
a)
NA
b)
nA
c)
na
d)
Na
100.
What is the correct chemical symbol for magnesium?
a)
M
b)
Mg
c)
Mn
d)
MN
101.
What does this sentence describe: 2 or more substances that are not chemically joined together but can be separated easily
a)
Element
b)
Mixture
c)
Compound
102.
When a liquid turns into a gas at any temperature without bubbles, this shows...
a)
Boiling
b)
Melting
c)
Freezing
d)
Evaporation
103.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
104.
Why can you see most objects? 
a)
they emit light
b)
light refracts through them
c)
light reflects off them
d)
They absorb light
105.
Law of reflection state that - The angle of incidence is .................. to the angle of reflection.
a)
equal
b)
double
c)
half
106.

Images in a plane mirror are

a)

real

b)

larger

c)

same size

d)

smaller

107.
Light travels in ___________ lines
a)
wavy
b)
bent
c)
straight
d)
backwards
108.

What is the value of the unknown angle (theta) in the following diagram?

a)

A. 30 degrees

b)

B. 45 degrees

c)

C. 90 degrees

d)

D. 60 degrees

109.
If the angle of incidence is 45 degree, what is the angle between the incident ray and reflecting surface
a)
45
b)
90
c)
180
d)
none of the above
110.
what is the angle between the incident ray and the normal called as
a)
angle of incidence
b)
angle of reflection
c)
angle of convergent
d)
angle of divergent
111.
Which of the following is not a source of light? 
a)
A. candle
b)
B. caver’s lamp
c)
C. mirror
d)
D. sun
112.
Which of these is the best reflector of light?
a)
shiny metal
b)
white paper
c)
carpet
d)
wood
113.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

114.

Which is the reflected ray?

a)

A

b)

B

c)

C

d)

D

115.

What is the object helps the customers at a show store to choose their favourite shoes?

a)

periscope

b)

hand held mirror

c)

plane mirror

d)

dental mirror

116.

What is the object helps navy personnel in a submarine to see an object at the surface at the sea?

a)

periscope

b)

hand held mirror

c)

plane mirror

d)

dental mirror

117.

When light hits a barrier that is solid/opaque what is usually created?

a)

a hot object

b)

a shadow

c)

nothing

118.

When does the light is refracted?

a)

When light travels in a straight line

b)

When light is bounced

c)

When light travels in two different mediums

d)

When light cannot pass through an opaque object

119.

Diagram shows the condition of a spoon in a glass of water.

What can be observed about the spoon?

a)

The spoon looks bent.

b)

The water is clearer.

c)

The water level rises.

d)

Light is refracted.

120.

What is the conclusion from your observation in this picture?

a)

Light travels in a straight line

b)

Light can be refracted

c)

Light can be reflected

d)

Light can pass through a transparent material

121.

Which of the following shows the principle of light refraction? Tick the correct answers.

a)

A

b)

B

c)

D

d)

E

e)

F

122.
How does light behave as it enters these mediums?
a)
continue its path as straight line.
b)
bends toward the normal
c)
bends away from the normal
d)
reflects
123.
Swimming pools and the ocean look shallower than they really are due to:
a)
reflection 
b)
dispersion
c)
refraction
d)
total internal reflection
124.

Light passes into a glass block. Which is the angle of refraction?

a)

A

b)

B

c)

C

d)

D

125.
Light changes speed as it travels through various mediums.  What are examples of mediums that light can travel through.
a)
snow and ice
b)
air and water
c)
cloth and wood
d)
glass and wood
126.

What direction does the ray bend when entering a more optically dense material, where the wave travels more slowly?

a)

Towards the normal.

b)

Away from the normal.

c)

No change.

d)

Answer is not listed above.

127.

A ray of light in air is incident at an angle on one side of a rectangular glass block, as shown. Which ray diagram correctly describes the complete path of the ray of light?


(Determine if light bends towards or away from normal at each boundary)

a)
b)
c)
d)
128.

The breaking up of white light into its component .

Based on the statement given, name the process that takes place in the white light.

a)

Dispersion

b)

Reflection

c)

Refraction

d)

Scattering

129.

Why is the component of colour in a rainbow can be seen when light passes through a glass prism?

a)

phenomena of scattering of light

b)

phenomena of dispersion of light

c)

phenomena of reflection of light

d)

phenomena of diffraction of light

130.

How many components of white light?

a)

5

b)

6

c)

7

d)

8

131.

This is the example of dispersion of light

a)

sky looks bright orange in the evening

b)

shadow

c)

Pool seems shallower

d)

rainbow

132.

These are all colours of spectrum except

a)

indigo

b)

blue

c)

purple

d)

green

133.

Why is red light is at the top whileviolet at the bottom of the spectrum?

a)

Violet light has the medium speed so it is refracted the least.

b)

Violet light has the highest speed so it is refracted the least

c)

Red light has the slowest speed so it is refracted the least

d)

Red light has the highest speed so it is refracted the least.

134.

Rainbow is formed due to

a)

Natural dispersion

b)

Sunlight passing through raindrops

c)

Refraction of light

d)

All of the above

135.

A transparent object that bends light into rainbow colors.

a)

prism

b)

mirror

c)

convex lens

d)

concave lens

136.

The dispersion of light is the separation of white light into the spectrum of light, namely red, orange, yellow, green,blue,indigo and violet.

a)

True

b)

False

137.

Violet light is refracted the most by a glass prism as the light travels the ................ through the glass prism.

a)

slowest

b)

fastest

138.

Red light is refracted the least by a glass prism because red light travels the ............ through the glass prism

a)

slowest

b)

fastest

139.

The substance in the sky which is involved in the formation of rainbow

a)

Air particle

b)

Dust

c)

Raindrop

d)

soot

140.

Which of the following is NOT a source of light?

a)

eyes

b)

lit candle

c)

sun

d)

firefly

141.

Light is able to pass through __________________ materials

a)

transparent

b)

shiny

c)

dull

d)

opaque

142.

Light is unable to pass through ________________ objects

a)

opaque

b)

coloured

c)

blunt

d)

dark

143.

What colours is white light made from?

a)

Orange, Green, Pink, Magenta, Peach, Rose, Lemon

b)

Red, Orange Yellow, Green, Black, Indigo, Violet

c)

Red, Orange, Yellow, Green, Blue, Indigo, Violet

d)

Red, Orange, Yellow, Grey, Blue, Indigo, Violet

144.

Which of the following is NOT a primary color of light?

a)

Red

b)

Blue

c)

Yellow

d)

Green

145.

The process of mixing primary coloured lights to produce secondary coloured lights.

This process related to

a)

Dispersion of light

b)

Addition of light

c)

Subtraction of light

d)

Refraction of light

146.

The light which has the same colour as the colour of the opaque objects will reflected directly into our eyes, while the light of other colours will be absorbed by objects. This phenomenon is known as

a)

Dispersion of light

b)

Addition of light

c)

Subtraction of light

d)

Refraction of light

147.

Which of the following is NOT a secondary colours

a)

Cyan

b)

White

c)

Yellow

d)

Magenta

148.

Diagram shows light colour addition. What colour is P?

a)

Magenta

b)

Yellow

c)

Cyan

d)

White

149.

Which pair of colours do NOT combine to make the correct secondary colours?

a)

Red + Blue = Magenta

b)

Red + Green = Yellow

c)

Blue + Green = Cyan

d)

Red + Yellow = Green

150.

Diagram shows light colour addition. What colour is formed at X?

a)

White

b)

Black

151.

Only allow the light of the same colour to pass through, light of other colours are absorbed.

a)

Primary colour filters

b)

Secondary colour filters

152.

Which color will pass through the filter?

a)

Red only

b)

Blue and Violet

c)

Green

d)

All colors

153.

How does light behave when hitting this shirt?

a)

Yellow is absorbed; all other colors are reflected.

b)

Yellow is reflected; all other colors are absorbed.

c)

All colors are absorbed, but yellow is refracted.

d)

Yellow is scattered and all other colors are absorbed.

154.

White light is shined through a magenta filter. Which of the following will be BLOCKED by the filter?

a)

Red

b)

Blue

c)

Green

d)

Magenta

155.

How will this object appear when looking at it through a blue filter?

a)

Blue

b)

Green

c)

Black

d)

Orange

156.

Diagram shows light colour addition. What colour is Q?

a)

Magenta

b)

Yellow

c)

Cyan

d)

White

157.

Diagram shows light colour addition. What colour is R?

a)

Magenta

b)

Yellow

c)

Cyan

d)

White

158.

Objects with primary colours (red, blue or green) will only reflect the light which has the same colours as them.

a)

True

b)

False

159.

Objects with secondary colours (yellow, magenta or cyan) reflect the light of the same colour and also the light of primary colours which form the secondary colour.

a)

True

b)

False

160.

Black objects appear black because they ........ all colours in white light.

a)

reflect

b)

absorb

161.

White objects appear white in white light because the white objects ........... all colours in white light.

a)

reflect

b)

absorb

162.

Below are the examples of the addition and subtraction of light in daily life except

a)

A colour television

b)

Coloured lights in a stadium

c)

Twinkling stars

d)

Coloured lights in the fountain in front of KLCC

163.

Which planet is the biggest?

a)

Jupiter

b)

Mars

c)

Venus

d)

Uranus

164.

an enormous explosion that occurs when a massive star dies

a)

black hole

b)

nuclear fusion

c)

supernova

d)

solar wind

165.

a hot, dense, slowly cooling sphere of carbon that remains when a red giant star dies

a)

red giant

b)

supergiant

c)

black hole

d)

white dwarf

166.

an immense cloud of dust & gas where stars are born

a)

black hole

b)

nebula

c)

prominence

d)

supernova

167.
The largest type of star is 
a)
nebula
b)
red giant
c)
red supergiant
d)
supernova
168.
All of the galaxies together is _______.
a)
nebula
b)
solar system
c)
Milky Way
d)
universe
169.
What is an exploding star?
a)
black hole
b)
Milky Way
c)
supernova
d)
solar system
170.
What is the shape of an elliptical galaxy?
a)
oval
b)
square
c)
no shape
d)
pinwheel
171.
What is the shape of an irregular galaxy?
a)
oval
b)
square
c)
no shape
d)
pinwheel
172.

Our solar system is in which galaxy?

a)

The Clouds of Magellan

b)

Andromeda

c)

The Milky Way

d)

Betelguese

173.

What is the name of Earth's star?

a)

Antares

b)

Betelguese

c)

Polaris

d)

the Sun

174.

What do you call a scientist who studies objects in space?

a)

meteorologist

b)

astronomer

c)

astronaut

175.

Most distances in space and to stars outside of our solar system are measured using.....

a)

light-years

b)

astronomical units

c)

feet

d)

meters

176.

How bright a star looks to observers on Earth is its....

a)

true brightness

b)

apparent brightness

177.
Made of ice, dust and gas
a)
asteroid
b)
meteoroid
c)
comet
d)
meteor
178.
Appears as a streak in the sky.
a)
asteroid
b)
meteoroid
c)
comet
d)
meteor
179.

One similarity between asteroids, comets and meteoroids is that they all:

a)

are made of rock

b)

come from the Asteroid Belt

c)

come from the Oort Cloud

d)

orbit the sun

180.

I am located between Mars and Jupiter.

a)

Comet belt

b)

Asteroid belt

c)

Meteor belt

d)

Stars

181.

The asteroid belt is located between which 2 planets?

a)

Mercury and Venus

b)

Jupiter and Saturn

c)

Uranus and Neptune

d)

Mars and Jupiter

182.

A comet forms a tail when

a)

It is deep in outer space and begins to melt

b)

It gets close to the sun and begins to melt

183.

Asteroids "hang out" in our solar system in a place called:

a)

The Kupier Belt

b)

The Planetary Rings

c)

The Oort Cloud

d)

The Asteroid Belt

184.

Where is the asteroid belt?

a)

Closer to the Sun than Mercury.

b)


Between the orbits of Mars and Jupiter.


c)

Between the orbits of Venus and Earth.

d)

Between the orbits of Uranus and Neptune.

185.

What causes meteors to burn up in our atmosphere?

a)

Heat from the Sun

b)

They are already so hot that our atmosphere can't handle it

c)

Heat from Earth's atmosphere

d)

Friction from the Earth's atmosphere

186.

Asteroids are made up of..


a)

iron oxygen and silicon

b)

clay and silicate

c)

stone and other metals

187.

Ceres is...

a)

the largest asteroid in the Kuiper Belt.

b)

an asteroid in the Oort cloud.

c)

the largest asteroid in the asteroid belt.

d)

a comet in the Oort cloud.

188.

A large round pit caused by the impact of a meteoroid.

a)

Pothole

b)

Pothole

c)

Crater

d)

Plateau

189.

The force of gravity on an asteroids is ​ ____ than the force of gravity on Venus.

a)

smaller

b)

bigger

190.

How long is the Asteroid Itokawa?

a)

530m

b)

540m

c)

560m

d)

520m

191.

A rocky object that revolves around the sun, but is too small to be considered a planet.

a)

Meteor

b)

Asteroid

c)

Comet

d)

Constellation

192.

Can asteroid become planets?

a)

No

b)

Yes

193.

Tick the statements that is not true about asteroids.

a)

Asteroids are made from rock.

b)

Fewer than 500 000 asteroids have been discovered.

c)

Asteroids orbit the Sun.

d)

Asteroids can have irregular shapes.

194.

What are asteroids made of?

a)

rocks

b)

clouds

c)

metals

d)

dust

195.

One similarity between asteroids & planets is that they all:

a)

are made of rock

b)

come from the Asteroid Belt

c)

orbit the sun

196.

I am located between Mars and Jupiter.

a)

Comet belt

b)

Meteor belt

c)

Asteroid belt

d)

Stars

197.

Asteroids sometimes hit the earth because of these (choose two)

a)

Earth's gravitational force

b)

Closeness of asteroid to the earth's atmosphere

c)

Chemical reactions in space

d)

Weather conditions

198.

When objects strike the surface of a planet or moon, they leave a deep impression on the surface called a:

a)

Pothole 

b)

Canyon

c)

Crater

d)

Plateau

199.

What causes meteors to burn up in our atmosphere?

a)

Heat from the Sun

b)

They are already so hot that our atmosphere can't handle it

c)

Heat from Earth's atmosphere

d)

Friction from the Earth's atmosphere

200.

Which space object is larger?

a)

Asteroid

b)

Meteor

c)

Planet

201.

Planets and asteroids are non-luminous.

a)

True

b)

False

202.
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.
203.
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.
204.
The magnet's shown will
a)
not move
b)
attract
c)
repel
d)
all of the above
205.
The magnet's shown will
a)
not move
b)
attract
c)
repel
d)
all of the above
206.
Magnets attract things made of
a)
copper
b)
iron
c)
wood
d)
plastic
207.
All magnets have 2
a)
fields
b)
colors
c)
poles
d)
all of the above
208.
The two poles on a magnet are
a)
north and east
b)
north and west
c)
south and north
d)
south and west
209.
What do the lines around this magnet represent?
a)
North Pole
b)
South Pole
c)
Magnetic Declination
d)
Magnetic Field
210.

The Earth has a magnetic field.

a)

True

b)

False

211.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)
granite
b)
limestone
c)
iron
d)
nickel
212.
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
213.
The force of magnetism is stronger when magnets are ________________
a)
cold
b)
round
c)
closer together
d)
farther apart
214.
Magnetism is generated by moving
a)
protons.
b)
electrons.
c)
neutrons.
d)
elements.
215.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
216.
The strongest part of a magnet is...
a)
the bars.
b)
the force field.
c)
the poles. 
d)
the middle.
217.
Iron and steel can become _____.
a)
magnetized
b)
transformed into plastics
c)
lined up to the poles
d)
part of the equator
218.
A simple electromagnet can be made with which of the following?
a)
an electric current
b)
a turbine and nail
c)
a nail, a wire, and a battery
d)
a compass and a battery
219.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
220.
You can make an electromagnet stronger by...
a)
increasing the current through the wire
b)
make the iron core bigger
c)
increase the number of loops around the core
d)
All of these
221.

What device takes in mechanical energy and produces electricity?

a)

motor

b)

generator

c)

electromagnet

d)

battery

222.

In order to magnetize an object for electromagnetism, it needs to have iron or steel (ex. a rod or nail).

a)

True

b)

False

223.

Electromagnets do NOT have a north and south pole.

a)

True

b)

False

224.

Electromagnets can be turned on and off.

a)

True

b)

False

225.

Electromagnets need a power source.

a)

True

b)

False

226.

Electricity is needed for electromagnets.

a)

True

b)

False

227.

What are the components of the electromagnets?

a)

battery, wire and bulb

b)

battery , copper wire and paper clips

c)

battery, copper wire and iron nail

d)

battery, wire and aluminum

228.

Electric currents produce _____________

a)

electron clouds

b)

magnetic fields

c)

sound waves

229.

How can the strength of an electromagnet be increased? (mark all that apply)

a)

increase the current flowing through the coil

b)

increase the number of coils

c)

add an amplifier to it

d)

put iron core inside the coil

230.
Surrounding every magnet is a __________  __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
231.
What are the ends of a magnet called?
a)
East and west poles
b)
Left and Right ends
c)
North and South ends
d)
North and South poles
232.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
233.
What types of charges repel?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Neutral and Neutral
234.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
235.
Which is NOT an insulator.
a)
Wool
b)
Plastic
c)
Copper
d)
Glass
236.
What is the difference between a conductor and an insulator?
a)
An insulator allows electricity to flow through it easily and a conductor does not
b)
A conductor allows electricity to flow through it easily and an insulator does not.
c)
An insulator is magnetic and a conductor is not
d)
A conductor is magnetic and an insulator is not
237.
Which part of the atom is positively charged?
a)
Proton
b)
Neutron
c)
Electron
238.
What is the charge of the electron
a)
positive
b)
no charge
c)
negative
d)
neutral
239.
Electric charges that are alike _______ each other.
a)
Attract
b)
Repel

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