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Primary 4 Science Semester Test review

Total questions: 179

Worksheet time: 2hrs 8mins

Name
Class
Date
1.

What has a definite shape and volume?

a)

Gas

b)

Liquid

c)

Solid

2.

A state in which matter has no definite shape and no definite volume is ________.

a)

Liquid

b)

Solid

c)

Gas

3.

What state of matter has a definite volume, but no definite shape?

a)

Gas

b)

Solid

c)

Liquid

4.

Milk is a example of which state of matter?

a)

Solid

b)

Liquid

c)

Gas

5.

A pencil is a __________.

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

6.

When you heat water, it turns into a _________.

a)

Gas

b)

Liquid

c)

Solid

7.

What is an example of a solid turning into another state of matter?

a)

Breaking a chair into pieces

b)

Snow becoming a puddle

c)

Tearing a piece of paper

d)

Water freezing

8.

When an ice cube melts, it changes from...

a)

A solid to a liquid.

b)

A liquid to a gas.

c)

A solid to a gas.

d)

A gas to a solid.

9.

Which would cause liquid water to change to a solid?

a)

Warming

b)

Heating

c)

Freezing

d)

Dripping

10.

Shauna placed a cup of water in a warm place. One week later, no water was left in the cup. What probably happened?

a)

The liquid water changed to a gas.

b)

The liquid water changed to a solid.

c)

The water leaked out of the cup.

d)

The water spilled from the cup.

11.

Any substance that has mass and occupies space is called____________________

a)

atom

b)

matter

c)

volume

12.
Milk is a _____. It can take the shape of any container that it is in.
a)
Solid
b)
Liquid
c)
Gas
13.
What is the missing word? When water is...., it starts to change from a liquid to a solid.
a)
Cooled
b)
Heated
c)
Boiled
14.

Which state of matter has a definite shape and volume?

a)

solid

b)

liquid

c)

gas

15.
Gases __________.
a)
have a fixed shape
b)
are easily compressed
c)
have particles that do not flow easily
d)
have a definite volume
16.

Molecules in _______________are very loosely packed.

a)

solids

b)

liquids

c)

gases

17.

The air you breathe is in which state?

a)

gas

b)

liquid

c)

solid

18.

These particles are representing which state of matter?

a)

gas

b)

solid

c)

liquid

19.

These particles are representing which state of matter?

a)

liquid

b)

solid

c)

gas

20.

Matter exist in _________________states.

a)

Two

b)

Three

c)

Four

d)

Five

21.
Which of these is NOT a gas.
a)
Air
b)
The sea
c)
Carbon dioxide
22.
You blow up a balloon. Is it heavier or lighter than the uninflated balloon?
a)
Heavier
b)
Lighter
c)
The same
23.
When you squeeze a sponge under water. What are the bubbles that escape?
a)
Pieces of sponge.
b)
Air escaping.
c)
Water.
24.
Which of these IS a liquid?
a)
Sponge
b)
Shampoo
c)
Salt
25.
Which material IS a solid?
a)
Syrup
b)
Oil
c)
Wood
26.
To change a solid to a liquid you...
a)
Heat it
b)
Cool it
c)
Bend it
27.
Which of these best describes a solid?
a)
My particles are packed tightly together. I keep my shape.
b)
My particles are loosely packed. I take the shape of my container.
c)
My particles have lots of room. I try to spread out in every direction.
28.
Which of these best describes a liquid?
a)
My particles have lots of room. I try to spread out in every direction.
b)
My particles are packed tightly together. I keep my shape.
c)
 My particles are loosely packed. I take the shape of my container.
29.
Which of these best describes a gas?
a)
My particles are packed tightly together. I keep my shape.
b)
My particles are loosely packed. I take the shape of my container.
c)
 My particles have lots of room. I try to spread out in every direction.
30.
Butter going soft and runny on a hot day is an example of ...
a)
Freezing
b)
Melting
c)
Condensing
31.
What is the missing word? When water is...., it starts to change from a liquid to a solid.
a)
Cooled
b)
Heated
c)
Boiled
32.
Once a solid is turned in to a liquid, can it ever be turned back in to a solid?
a)
Yes
b)
No
33.
Clouds are formed by...
a)
Rain falling
b)
Hot air rising
c)
Water vapour condensing
34.
A gas changes in to a liquid when it is...
a)
Heated
b)
Cooled
c)
Boiled
35.
What is evaporation?
a)
When a solid becomes a liquid?
b)
When a liquid becomes a gas?
c)
When a gas becomes a solid?
36.
The movement of water around the world is called...
a)
The water cycle.
b)
Condensation.
c)
Evaporation.
37.
Which of these is NOT part of the water cycle?
a)
The Sun evaporates water on the Earth's surface into water vapour
b)
 The water vapour rises, and cools and condenses into clouds
c)
 When it rains, the clouds melt
38.
What is the missing word? When water is...., it starts to change from a liquid to a solid.
a)
Cooled
b)
Heated
c)
Boiled
39.
What is the missing word? When water is...., it starts to change from a liquid to a solid.
a)
Cooled
b)
Heated
c)
Boiled
40.
What is the missing word? When water is...., it starts to change from a liquid to a solid.
a)
Cooled
b)
Heated
c)
Boiled
41.
Once a solid is turned in to a liquid, can it ever be turned back in to a solid?
a)
Yes
b)
No
42.
A gas changes in to a liquid when it is...
a)
Heated
b)
Cooled
c)
Boiled
43.
A gas changes in to a liquid when it is...
a)
Heated
b)
Cooled
c)
Boiled
44.
The movement of water around the world is called...
a)
The water cycle.
b)
Condensation.
c)
Evaporation.
45.

Magnetism is a type of ____________

a)

force

b)

book

c)

plant

d)

animal

46.

What do magnets stick to?

a)

copper

b)

wood

c)

iron

d)

plastic

47.

When two magnets attract, they ______________

a)

push apart

b)

change color

c)

get colder

d)

pull together

48.

When two magnets repel, they ________________

a)

change color

b)

pull together

c)

push apart

d)

get colder

49.

Materials with _______________ surfaces have less friction.

a)

smooth

b)

rough

c)

both

50.

A puck slides along an icy surface. What makes it slow down?

a)

It runs out of push

b)

It rubs against the ice

c)

It runs out of electricity

51.

A boy sits halfway down a grassy slope. What force stops him sliding down?

a)

Weight

b)

Gravity

c)

Friction

d)

Magnetism

52.

On which surface will a toy car travel the furthest?

a)

Carpet

b)

Polished Wood

c)

Ice

d)

Grassy field

53.

Rougher surfaces have ...

a)

greater friction

b)

less friction

c)

the same level of friction

d)

no friction

54.

What is gravity?

a)

A force that pulls

b)

A force that pushes

c)

energy

d)

friction

55.

A _____ is a pull or a push.

a)

force

b)

friction

c)

gravity

d)

speed

56.

A _____ moves an object closer to you.

a)

push

b)

pull

c)

friction

d)

magnetism

57.

One way that a force can cause the change in an object's motion is to...

a)

do nothing.

b)

eat ice cream.

c)

start the object moving.

d)

shine on the object.

58.

_____ is the force that slows and stops motion between touching objects.

a)

Friction

b)

Gravity

c)

Pull

d)

Push

59.

What science tool is used to measure mass?

a)

ruler

b)

pan balance

c)

circuit

d)

graduated cylinder

60.

What science tool is used to measure distance?

a)

graduated cylinder

b)

ruler or meter stick

c)

thermometer

d)

magnet

61.

Which force causes an object to move away from you?

a)

magnetism

b)

push

c)

pull

d)

gravity

62.

The toy car and ramp seen above might be used to answer which testable question?

a)

A. What material is the ramp made of?

b)

B. Which toy car looks the best?

c)

C What effect does gravity have on a toy car?

d)

D. What metal makes the best toy cars?

63.

2. By changing the surface over which the car rolls from sandpaper to wax paper, you might be able to test the effect of what force?

a)

A. Magnetism

b)

B. Wind

c)

C. Wind

d)

D. Friction

64.

3. Which two tools below would be most useful in testing how the mass of an object can affect the distance it moves with a push?

a)

A. Spring scale and hot plate

b)

B. Balance and meter stick

c)

C. Graduated Cylinder and beaker

d)

D. Magnet and thermometer

65.

How might you test the strength of several different types of magnets?

a)

F. Submerge each magnet in water

b)

F. Submerge each magnet in acid

c)

H. Find the mass of each magnet

d)

J. Measure the attraction force of each magnet

66.

5. An experiment is conducted to measure the amount of force required to push a square cardboard box from one side of the room to the other side. What variable is likely to lessen the force required?

a)

A. Adding several heavy weights to the box

b)

B. Tipping the box onto its side

c)

C. Adding another box on top

d)

D. Placing the box onto a wheeled cart

67.

6. Some students were investigating if the height that a ball was dropped would affect its bounce. The ball was dropped at 60 cm and at 80 cm. What statement is true of the results for each of the heights that the balls were dropped?

a)

F. There was no difference in the results.

b)

G. The ball dropped from 60 cm bounced 20 cm higher than

the ball dropped from 80 cm.

c)

H. The ball dropped from 80 cm bounced higher than the ball dropped from 60 cm.

d)

J. The ball dropped from 60 cm bounced higher than the ball dropped from 80 cm.

68.

7. A ball is sitting loose in the moving wagon pictured below. If the wagon stops suddenly, the ball will

a)

A. stop immediately with the wagon

b)

B. roll forward in the wagon and fall off

c)

C. both the wagon and the ball will crash

d)

D. stay exactly where it is

69.

During an experiment, students applied an equal force to push each box pictured below. If they pushed all of the boxes on the same surface for same amount of time, which box will MOST LIKELY move the greatest distance?

a)

F. 30 kg

b)

G. 15 kg

c)

H. 150 kg

d)

J. 40 kg

70.

9. Some students were testing the effects of force on the motion of a water bottle. They set up the experiment picture above and rolled the full water bottle down both ramps. What question were the students most likely trying to answer?

a)

A. How does mass affect the distance a full water bottle will roll?

b)

B. How does friction affect the distance a full water bottle will roll?

c)

C. How does the size of the water bottle affect the distance it rolls?

d)

D. How does ramp height affect the distance a full water bottle will roll?

71.

10. A student investigating the effects of forces, measures the distance a ball can be pushed by air from a small fan. What is the variable (change) in this investigation?

a)

F. The mass of the balls being pushed by air.

b)

G. The length of the surface on which the balls roll.

c)

H. The amount of wind pushing the balls.

d)

J. The type of surface the balls are rolling on.

72.

Which of the following is correct about coal?

a)

solid fossil fuel

b)

liquid fossil fuel

c)

gaseous fossil fuel

d)

plasma fossil fuel

73.

Which of the following is correct about oil?

a)

solid fossil fuel

b)

liquid fossil fuel

c)

gaseous fossil fuel

d)

plasma fossil fuel

74.

Look at the electrical appliance shown. The form of energy produced when it is being used is...

a)

sound, light and heat

b)

light and heat

c)

sound and light

d)

sound and heat

75.

The alternative energy used as shown in the picture is?

a)

geothermal

b)

tides

c)

wind

d)

wind and water

76.

Look at the electrical appliances given. The electrical appliances that undergo the same energy transformation when in use are...

a)

1 and 2

b)

1 and 4

c)

2 and 3

d)

2 and 4

77.

Look at the electrical appliances given. The electrical appliances that undergo the same energy transformation when in use are...

a)

1 and 2

b)

1 and 4

c)

1, 2 and 4

d)

1, 2, 3 and 4

78.

Look at the picture shown.

The energy transformation that takes place in this electrical appliance is from.... energy to .... energy.

a)

electrical, heat

b)

electrical, sound

c)

sound, electrical

d)

electrical, chemical

79.

Look at these electrical appliances.

The appliances that undergo the same energy transformation when in use are....

a)

1 and 2

b)

2 and 3

c)

1, 2 and 3

d)

1, 2, 3 and 4

80.

The alternative energy as shown in the picture is...... energy.

a)

geothermal

b)

tide

c)

wind

d)

solar

81.

Mention 3 ways to conserve energy.

a)

Turn off the electronics when they are not in use

b)

Use energy-saving lamps

c)

Shut your computer down when you are done with it

d)

Leaving the Lights On

e)

Leaving the fridge open

82.

What is energy?

a)

moving energy

b)

stored energy

c)

renewable energy

d)

The ability to do work.

83.

What is NOT a renewable energy source?

a)

Coal

b)

Wind

c)

Solar

d)

Water

84.

__________ is a substance from plants or animal faeces used to produce fuels and generate electricity.

a)

Fossil Fuel

b)

Nuclear

c)

Uranium

d)

Biomass

85.

Sun is a need for plants to carry out?

a)

defecation

b)

excretion

c)

photosynthesis

d)

digestion

86.

Blowing wind rotates the __________ to generate electricity.

a)

dam

b)

windmill

c)

hydroelectric dam

d)

nuclear power station

87.

The main source of energy is

a)

Geothermal

b)

Sun

c)

Wind

d)

Nuclear

88.

The energy from the Sun is used to generate electricity with the use of ________________?

a)

Wave turbine

b)

Windmill

c)

Power station

d)

Solar Panel

89.

_____________ is the energy produced by vibrating objects.

a)

Heat energy

b)

Kinetic Energy

c)

Potential Energy

d)

Sound Energy

90.

Which of renewable energy come from deep within the Earth?

a)

Wind

b)

Hydro

c)

Biomass

d)

Geothermal

91.

Which of following non-renewable energy produce less pollutant?

a)

Coal

b)

Oil

c)

Natural Gas

d)

Nuclear

92.

A solid fossil fuel that is formed from the concentrated remains of plants over very long periods of time

a)

coal

b)

oil

c)

uranium

d)

solar

93.

Burning of fossil fuels has a direct effect on the environment. The greatest direct effect is–

a)

animals being driven from their homes.

b)

pollution being added to the air.

c)

plants in nearby ponds being killed.

d)

powerful winds being created.

94.

All of the following are considered alternative energy sources EXCEPT –

a)

Wind

b)

Coal

c)

Biofuel

d)

Solar

95.

The picture shows what type of transformation

a)

Electrical to mechanical

b)

light to electric

c)

electrical to light

d)

light to light

96.

What is energy transformation?

a)

a change of energy from one form to another

b)

when energy gets more energy added to it

c)

when energy gets destroyed

d)

a change in intensity

97.

Which of following is NOT the component of simple circuit?

a)

Bulb

b)

Switch

c)

Valve

d)

Cell

98.

What do we call the part of bulb which labelled number 1?

a)

Glass cover

b)

Metal filament

c)

Metal wires

d)

Metal casing

99.

What is the unit to measure voltage?

a)

Ampere

b)

Ohm

c)

Volt

d)

Mole

100.

What makes a short circuit ?

a)

When wire is short

b)

When wire heats up

c)

When battery has finished

d)

When bulb blown up

101.

What can we do to make the bulbs brighter?

a)

Add more wire

b)

Add more switch

c)

Add more bulb

d)

Add more battery

102.

Which variable is changed from the circuits?

a)

Number of bulb

b)

Number of batteries

c)

Arrangement of bulb

d)

Arrangement of battery

103.

What can we do to make the bulb dimmer?

a)

Shorten the wire

b)

Take the switch

c)

Add more battery

d)

Reduce battery

104.

Which of following will NOT make the bulb dimmer?

a)

Use old battery

b)

Add more bulb

c)

Use longer wire

d)

Change bulb position

105.

How do we control the flow of the electricity?

a)

By using bulb

b)

By using battery

c)

By using buzzer

d)

By using switch

106.

What an electrical technician wear when fixing electrical appliances?

a)

Wear a googles

b)

Wear gloves

c)

Wear mask

d)

Wear boots

107.

Which of following activity is allowed when we are using main electricity?

a)
b)
c)
d)
108.

Which of following is battery symbol?

a)
b)
c)
d)
109.

Which of following circuit will NOT light up?

a)
b)
c)
d)
110.

How do you identify a faulty component in a series circuit?

a)

When we add more bulb

b)

When we add more battery

c)

When the bulb does not light up

d)

When the wire is longer

111.

What makes the bulb does not light up?

a)

Because there is no switch

b)

Because there is only 1 battery

c)

Because there is only 1 bulb

d)

Because the wire is not connected well

112.

Which of the following are the electric components of a simple circuit?

a)

Motor, bulb, wire, buzzer

b)

Switch, battery, cell, wire

c)

Battery, main, switch, wire

d)

Switch, wire, battery, motor

113.

Ani wants to set up an electric circuit with these loads : 1 bulb, and 1 buzzer. A bulb needs 1.5 volts and a buzzer needs 3 volts. How many 1.5 V batteries does she need to make the loads work?

a)

She needs 2 batteries.

b)

She needs 3 batteries.

c)

She needs 6 batteries.

d)

She needs 8 batteries.

114.

Look at the picture shown.

Which part of the bulb should connect to the battery?

a)

1 and 2

b)

1 and 3

c)

3 and 4

d)

2 and 4

115.

Look at the picture shown.

Which set-up(s) will light the bulb?

a)

I only

b)

I and II

c)

III and IV

d)

III and V

116.

A battery produces 1.5 volts. How many total voltages would 10 batteries (arranged in series) produce?

a)

7.5 Volts

b)

15 Volts

c)

21.5 Volts

d)

30 Volts

117.

Look at the electric circuit shown.

Which diagram is correct to represent the circuit?

a)
b)
c)
d)
118.

This happens when the current flows through a path which has little or even zero load. What this picture shown?

a)

It's open circuit

b)

It's parallel circuit

c)

It's short circuit

d)

It's not a circuit

119.

The pressure from an electrical circuit's power source that pushes electric current through a loop is called _________.

a)

transformation

b)

voltage

c)

volt

d)

switch

120.

___________ is electrical component of a circuit that consumes electric energy, such as bulb, motor and buzzer.

a)

load

b)

wire

c)

switch

d)

electricity

121.

Look at the picture shown.

Which light will be brighter? Explain your answer.

a)

A, because it has less voltage than B.

b)

B, because it has less voltage than A.

c)

A, because it has more voltage than B.

d)

B, because it has more voltage than A.

122.

Sean builds a circuit below. The cell and light bulb work. If Sean connects all materials like the picture shown, will the bulb light up? Explain your answer.

a)

Yes, the bulb will light up because the key is a conductor.

b)

Yes, the bulb will light up because the key is an insulator.

c)

No, the bulb will not light up because the key is a conductor.

d)

No, the bulb will not light up because the key is an insulator.

123.

Andy builds the circuit below. The bulbs do light up. Andy wants to change his circuit so that the two bulbs are brighter (He can use any other equipment). Suggest a way so Andy can make his two bulbs dimmer.

a)

Andy should put more batteries.

b)

Andy should remove a bulb.

c)

Andy should remove a battery.

d)

Andy should put a switch.

124.

Jill wants to do an investigation to see whether the voltage of a battery will affect the electric circuit.

What variable She needs to change?

a)

the lengths of wire

b)

the number of bulbs

c)

the voltage of the battery

d)

the brand of the battery

125.

(Select more than one answer)

Jill wants to do an investigation to see whether the voltage of a battery will affect the electric circuit.

Mention 3 variables that need to keep the same?

a)

the type of circuit

b)

the number of bulbs

c)

the voltage of the battery

d)

the brand of batteries

126.

Look at the picture shown.

We can model the flow of electricity using a central heating system. Which components of an electric circuit do the parts of the central heating system represent. Label A, B, C and D in order.

a)

A=Load ; B=Cell ; C=Wire ; D=Electric current

b)

A=Bulb ; B=Switch ; C=Wire ; D=Electric current

c)

A=Load ; B=Cell ; C=Switch ; D=Electric current

d)

A=Bulb ; B=Battery ; C=Switch ; D=Electric current

127.

Electric current flows from the _________ terminal to the __________ terminal of a battery.

a)

positive ; negative

b)

negative ; positive

c)

open ; closed

d)

south ; north

128.

(True or False)

An electrical technician need to wear gloves when fixing electrical appliances.

a)

True

b)

False

129.

(True or False)

Different electrical components need same amounts of energy to work.

a)

True

b)

False

130.

(True or False)

A 3-Volt battery has less potential energy than a 6-Volt battery.

a)

True

b)

False

131.

(True or False)

When there is a break in a circuit, the components will not work.

a)

True

b)

False

132.
Sound is...
a)
Noisy
b)
Energy
c)
Soft
d)
Ear
133.
Sound ________ or moves very quickly.
a)
Jumps
b)
Runs
c)
Vibrates
d)
Flies
134.
Sound travels by...
a)
Plane
b)
Air
c)
Boat
d)
Waves
135.
Sound can travel through...
a)
Finger
b)
Ear Plugs
c)
Walls
136.
Is this a high pitch or a low pitch?
a)
High
b)
Low
137.
Is it possible to feel sound vibrations?
a)
Yes
b)
No
138.
The Ear Drum has sound vibrate off of it. It is located in the... 
a)
Inner Ear
b)
Middle Ear
c)
Outer
139.
The hearing organ, the Cochlea is located in the...
a)
Inner Ear
b)
Middle Ear
c)
Outer Ear
140.
This area is filled with three bones, and mostly air. This is also where sound is amplified. Where does this occur?
a)
Outer Ear
b)
Middle Ear
c)
Inner Ear
141.
If someone is not able to hear, what is the most common way for them to communicate?
a)
Writing
b)
Sign Language
c)
Dance
142.

a)

ear canal

b)

eardrum

c)

pinna

d)

hammer

143.

a)

ear canal

b)

eardrum

c)

pinna

d)

hammer

144.

What is this?

a)

eardrum

b)

ear canal

c)

pinna

d)

hammer

145.

What is this?

a)

eardrum

b)

ear canal

c)

hammer

d)

anvil

146.

What is this?

a)

eardrum

b)

cochlea

c)

hammer

d)

auditory nerve

147.
a)

pinna

b)

stirrup

c)

eardrum

d)

cochlea

148.

What is this?

a)

anvil

b)

cochlea

c)

ear canal

d)

auditory nerve

149.

Sound occurs when particles in the air

a)

vibrate

b)

heat up

c)

slow down

d)

change shape

150.

The unit for measuring sound is

a)

metres (m)

b)

decibels (db)

c)

litres (L)

d)

grams (g)

151.

Which state of matter is the best conductor of sound (hear sounds the loudest)?

a)

solid

b)

liquid

c)

gas

d)

they are all the same

152.

How can a person prevent hearing damage?

a)

Avoid sticking objects into your ears.

b)

Don't listen to loud music for long periods of time.

c)

Wear ear protection when on a construction site.

d)

All of the above

153.

A dolphin hears using its

a)

tailbone

b)

jawbone

c)

fin

d)

pinna

154.

Which wave is the loudest sound?

a)

1

b)

2

c)

3

d)

4

155.

Which wave has the highest pitch

a)

1

b)

2

c)

3

d)

4

156.

Which wave has the lowest pitch?

a)

1

b)

2

c)

3

d)

4

157.

What does the word vibration mean?

a)

moving very fast up and down or side to side

b)

the loudness or softness of a sound

c)

the bones in your ear that help you hear

d)

the ripples in water

158.

What is the best soundproofing material?

a)

aluminum foil

b)

newspaper

c)

a towel

d)

bubble wrap

159.

To help the people at the back of the concert hall hear better, the singer needs to use a sound-amplifying device (device to make sound louder) such as a:

a)

a telephone

b)

a microphone

c)

a telescope

d)

a microscope

160.

Look at the picture. What is one safe sound to hear?

a)

fireworks

b)

dishwasher

c)

rock concert

d)

shotgun

161.

Sounds from 100-140 db are dangerous. What may happen if you hear sounds in this range for a long period of time or very close to your ear?

a)

You may have hearing loss or go deaf.

b)

Nothing will happen

c)

You will go blind.

162.

Check all of the pleasant sounds

a)

birds singing

b)

a jackhammer

c)

loud screaming

d)

soft music

163.

Check all of the unpleasant sounds

a)

nails on a chalkboard

b)

banging a pot with a spoon

c)

your mom yelling at you

d)

calm ocean waves

164.

Check all of the ways humans can make sounds.

a)

thinking

b)

talking

c)

clapping

d)

playing the piano

165.

The frequency of infrasonic sound is below 20 Hz. The following animal that can hear infrasonic sound is ....

a)
b)
c)
d)
166.

Musical instruments above that can produce sound from vibrating strings are shown by ...

a)
b)
c)
d)
167.

Read the statements below.

I. Sound can be absorbed.

II. Sound cannot be reflected

III. Sound travel faster in solids than in gas

IV. Sound is a longitudinal waves

V. Sound cannot travel through gas

The correct properties of sound are shown by number...

a)

I, II, and III

b)

I, III and V

c)

I, III, and IV

d)

I, II and V

168.

The following statement is correct about the use of ultrasonic sound is...

a)

To measure the blood pressure

b)

To check the internal human organs like the use of Ultrasonography (USG).

c)

To check body temperature

d)

To measure the speed of water

169.

The frequency of ultrasonic sound is...

a)

Above 20.000 Hz

b)

Between 20 – 20.000 Hz

c)

Below 20 Hz

d)

Below 20.000 Hz

170.

The part of the ear that is pointed by number 2 is used to...

a)

collect the soundwave

b)

connect the outer and middle parts or the ear

c)

connect the middle and inner parts

d)

keep the body balancear

171.

The items that can reflect sound are...

a)

Ceramic

b)

Sponge

c)

Carpets

d)

Glass

172.

Read the sentences below.

1. Sound enter the ear from the air.

2. The auditory nerves transmit the sound to the brain so thatwe can perceive sound.

3. The sound vibrate the ear drum

4. The sound vibrations are transmitted to the earbones and cochlea, until they reach

auditory nerves.

The correct way of how our ear works is shown by ...

a)

1-2-3 and 4

b)

1-2-4 and 3

c)

1-3-4 and 2

d)

1-4-3 and 2

173.

The outer part of the ears are ...

a)

Ear canal

b)

Ear bones

c)

Earlobes

d)

Auditory nerve

174.

The correct ways to care of ears are...

a)

Cleaning our ears using wet cotton buds.

b)

Cleaning ears everyday.

c)

Seeing the doctor to check if the ears are healthy.

d)

Using headset frequently

175.

Deafness is ear disorders caused by ....

a)

Damage of the ear drums and hearing nerves.

b)

an infection in the middle part of ear

c)

cleaning the ear using sharp materials

d)

clean the outer part of the ears using rough and hard materials

176.

Read the characteristics below.

- The frequency of this sound is between 20Hz-20.000 Hz.

- This frequency can be detected by the human ear.

The type of sound based on the characteristics above is ....

a)

ultrasonic sound

b)

infrasonic sound

c)

audiosonic sound

d)

supersonic sound

177.

The correct way to keep our ears healthy based on the picture above is . . .

a)

Cover the ears if you hear sudden loud noises

b)

Do not clean the ears oft en as it will take away the serumen or earwax

c)

Clean the outer part of the ears using soft materials, such as cotton

d)

Avoid using headsets often

178.

The part of ear that has the function to deliver the stimulus of sound to the brain is ....

a)

Pinna

b)

Auditory nerve

c)

Ear drum

d)

Ear bones

179.

Based on the picture, sound can travel through....

a)

air

b)

solid

c)

liquid

d)

gas

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