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Year 9 - Particles and Waves Practice Test

Total questions: 80

Worksheet time: 2hrs 36mins

Name
Class
Date
1.

What is transferred when heating by conduction?

a)

Light energy

b)

Thermal energy

c)

Kinetic energy

d)

Sound energy

2.

Which material is a thermal conductor?

a)

Metal

b)

Plastic

c)

Wood

d)

Glass

3.

Why does a metal object feel colder than a wooden object at the same temperature?

a)

Because wood loses heat faster

b)

Because metal conducts heat away from your hand

c)

Because wood is a conductor

d)

Because metal is an insulator

4.

What are convection currents?

a)

Movement of heat through solids

b)

Circulation of fluids due to density differences

5.

What prevents heat loss in a vacuum flask?

a)

Plastic stopper

b)

Vacuum

c)

Silvered walls

d)

All of the above

6.

What causes sound waves?

a)

Movement of air particles

b)

Vibration of particles in a medium

c)

Movement of electrons

d)

Refraction of light

7.

The distance between two compressions is called:

a)

Amplitude

b)

Frequency

c)

Wavelength

d)

Pitch

8.

When sound waves are close together, they are described as having:

a)

Low frequency

b)

High frequency

c)

High amplitude

d)

Low amplitude

9.

Which of the following describes rarefaction?

a)

Particles are close together

b)

Particles are spread apart

c)

Particles vibrate at right angles

d)

None of the above

10.

What is the approximate speed of sound in air at 20°C?

a)

1500 m/s

b)

343 m/s

c)

5960 m/s

d)

331 m/s

11.

Sound travels faster in water than in air because:

a)

water molecules are closer together, allowing sound waves to transmit more quickly

b)

sound waves are weaker in air

c)

air is denser than water

d)

sound cannot travel through air

12.

Which of the following best explains why sound travels faster in water than in air?

a)

Water particles are more spread out

b)

Water particles are closer together

c)

Air particles have more energy

d)

Sound cannot travel in water

13.

Which of the following materials allows sound to travel the fastest?

a)

Air

b)

Glass

c)

Steel

d)

Water

14.

What property of particles increases at higher temperatures?

a)

Kinetic energy

b)

Potential energy

c)

Mass

d)

Size

15.

What technology uses sound waves to locate objects underwater?

a)

Radar

b)

Sonar

c)

Infrared

d)

X-ray

16.

What happens when two objects are rubbed together?

a)

Electrons are transferred

b)

Protons are transferred

c)

Neutrons are transferred

d)

Nothing happens

17.

What is an electric circuit?

a)

A closed conducting pathway

b)

A type of insulator

c)

A group of protons and neutrons

d)

A spark discharge

18.

What device measures electric current?

a)

Voltmeter

b)

Ammeter

c)

Thermometer

d)

Scale

19.

Which particle carries a negative charge?

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

20.

In a series circuit, how is current arranged?

a)

Same through each component

b)

Different in each component

c)

Depends on resistance

d)

None of the above

21.

In a parallel circuit, current:

a)

Is the same everywhere

b)

Splits between branches

c)

Does not flow

d)

Is lost

22.

What is a short circuit?

a)

A break in the circuit

b)

Electricity flowing along an unintended path

c)

Circuit with high resistance

23.

What is a short circuit?

a)

A circuit with a break

b)

A circuit with a fuse

c)

A circuit with a switch

d)

Low voltage circuit

24.

Which device prevents excessive current flow?

a)

Ammeter

b)

Fuse

c)

Light globe

d)

Switch

25.

When bulbs are connected in parallel, they:

a)

Share the current equally

b)

Do not light up

c)

Receive full voltage

d)

Both b and c

26.

What is voltage?

a)

Flow of electrons

b)

Potential difference

c)

Current

d)

Resistance

27.

What instrument is used to measure voltage?

a)

Ammeter

b)

Voltmeter

c)

Ohmmeter

d)

Thermometer

28.

What is resistance?

a)

Measure of energy

b)

Difficulty of charge flow

c)

Current flow

d)

None of the above

29.

What equation represents Ohm’s law?

a)

V=IR

b)

I=VR

c)

R=IV

d)

P=VI

30.

If a 6V battery is connected in series with 2 lamps, how much voltage is across each lamp?

a)

6V

b)

3V

c)

12V

d)

0V

31.

Light is a type of which wave?

a)

Sound wave

b)

Mechanical wave

c)

Electromagnetic wave

d)

Seismic wave

32.

Which of the following are types of waves?

a)

Longitudinal

b)

Transverse

c)

Electromagnetic

d)

Both b and c

33.

What is the speed of light in a vacuum?

a)

3,000 km/s

b)

300,000 km/s

c)

30,000 km/s

d)

3,000,000 km/s

34.

Which of the following is NOT part of the EM spectrum?

a)

Gamma rays

b)

Microwaves

c)

Sound waves

d)

X-rays

35.

What does wavelength measure?

a)

Height of a wave

b)

Distance between two crests

c)

Number of waves per second

d)

Energy of a wave

36.

As wavelength increases, what happens to frequency?

a)

Frequency decreases.

b)

Frequency increases.

c)

Frequency stays the same.

d)

Frequency doubles.

37.

Which law governs reflection?

a)

Law of refraction

b)

Law of reflection

c)

Law of optics

d)

None

38.

In a plane mirror, the image is:

a)

Real and inverted

b)

Virtual and upright

c)

Virtual and inverted

d)

Real and upright

39.

What is the angle of incidence equal to?

a)

Angle of reflection

b)

Angle of refraction

c)

Angle of absorption

d)

90°

40.

Which type of mirror scatters light?

a)

Plane

b)

Concave

c)

Convex

d)

Transparent

41.

Which mirror is used in telescopes?

a)

Concave

b)

Convex

c)

Plane

d)

Spherical

42.

What is refraction?

a)

Bending of light

b)

Reflection of light

c)

Absorption of light

d)

Scattering of light

43.

What causes refraction?

a)

Change in wavelength

b)

Change in speed of light

c)

Change in frequency

d)

Change in colour

44.

When light enters a denser medium, it bends:

a)

Towards the normal

b)

Away from the normal

c)

Does not bend

d)

Stops

45.

What is the refractive index?

a)

Ratio of speed of light in air to speed in medium

b)

Ratio of speed in medium to air

c)

Speed of sound in air

d)

None

46.

Which lens causes light rays to converge?

a)

Convex

b)

Concave

c)

Plane

d)

Transparent

47.

What produces dispersion of light?

a)

Absorption

b)

Reflection

c)

Refraction

48.

What colours make up the primary colours of light?

a)

Red, green, blue

b)

Red, blue, yellow

c)

Red, green, yellow

d)

Blue, yellow, cyan

49.

What is formed when two primary colours are mixed?

a)

Primary colour

b)

Secondary colour

c)

White light

d)

Black

50.

What causes objects to appear coloured?

a)

They absorb and reflect specific wavelengths

b)

They scatter all wavelengths

c)

They reflect only white light

d)

They transmit all colours

51.

What colour will appear if red and green light is mixed?

a)

Blue

b)

Yellow

c)

Cyan

52.

In a convection current (a)   liquid rises, which is ​ (b)   dense​. While ​ (c)   liquid drops because it is ​​ (d)   dense

Choose from the below words
Hot
Cold
less
more
metal
solid
gas
53.

Label the following sections of a soundwave

a)Air Particles
b)compression
c)Rarefaction
d)Disturbance
e)Frequency
1
2
3
1)
2)
3)
54.
Question Image

In this wave, match each letter to the part of the wave

a)

A

1.

Crest

b)

B

2.

Wavelength

c)

C

3.

Amplitude

d)

D

4.

Trough

55.

Label the following frequencies from lowest pitch to highest pitch

a)

250Hz

b)

500Hz

c)

750Hz

d)

1000Hz

1)
2)
3)
4)
56.

Place the following mediums in order of how fast sound travels in the medium (slowest to fastest)

a)

Air

b)

Water

c)

Steel

1)
2)
3)
57.
Identify the components in the electrical circuit diagram.
a)Battery
b)Switch
c)Light Bulb
d)Wires
1
2
3
4
1)
2)
3)
4)
58.

Label the type of circuit

a)Parallel Circuit
b)Series Circuit
1
2
1)
2)
59.
Identify the different lines in the diagram.
a)Incident Ray
b)Reflected Ray
c)Normal Line
1
2
3
1)
2)
3)
60.
Identify the types of lines shown in the diagram.
a)Incident Ray
b)Refracted Ray
c)Normal Line
1
2
3
1)
2)
3)
61.
Identify the different regions of the electromagnetic spectrum.
a)Radio Waves
b)Microwaves
c)Infrared
d)Visible Light
e)Ultraviolet
f)X-Rays
g)Gamma Rays
1
2
3
4
5
6
7
1)
2)
3)
4)
5)
6)
7)
62.

Identify the type of lens in the image

a)Convex lens
b)Concave lens
1
2
1)
2)
63.

Explain why wood feels warmer than metal at the same temperature.

4 lines
64.

Describe how energy is transferred by conduction in solids.

4 lines
65.

Explain how sound is produced by a vibrating drum skin.

4 lines
66.

Define frequency and explain its relationship to pitch.

4 lines
67.

Explain why we cannot hear in space.

4 lines
68.

Describe how sonar works to locate submarines or fish.

4 lines
69.

Explain why charged objects can attract neutral objects.

4 lines
70.

Define the term electrical conductor.

4 lines
71.

Explain why household appliances are usually connected in parallel.

4 lines
72.

Describe how a fuse works.

4 lines
73.

Explain how resistors are used in electrical circuits.

4 lines
74.

Describe how to calculate resistance using Ohm’s law.

4 lines
75.

Explain why we see lightning before thunder.

4 lines
76.

Describe how light behaves like both a particle and a wave.

4 lines
77.

Explain why a swimming pool looks shallower than it actually is.

4 lines
78.

Describe the difference between convex and concave lenses.

4 lines
79.

Explain why grass looks green.

4 lines
80.

Describe what happens when white light passes through a prism.

4 lines

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