What causes the refraction of a wave?

A the density of the medium changes the speed

B the amount of the medium changes the direction

C the colour of the medium changes the speed

D the type of wave changes the direction

Two blocks X and Y are placed on a beam as shown. The beam balances on a pivot at its centre. What does this show about X and Y?

B They have the same mass and the same weight.

A They have the same mass and the same density.

C They have the same volume and the same density.

D They have the same volume and the same weight.

Sounds are made by vibrating objects. A certain object vibrates but a person nearby cannot hear any sound. Which statement might explain why nothing is heard?

B The frequency of the vibration is too high.

A The amplitude of the sound waves is too large.

C The sound waves are transverse.

D The speed of the sound waves is too high.

A strong electromagnet is used to attract pins. What happens when the current in the coil is halved?

C The same number of pins is attracted.

D Many more pins are attracted.

Which list contains only transverse waves?

B infra-red waves, light waves, ultraviolet waves

A infra-red waves, light waves, sound waves

C infra-red waves, sound waves, ultraviolet waves

D light waves, sound waves, ultraviolet waves

A thin converging lens is used to produce, on a screen, a focused image of a candle. The screen and the lens are moved back and forth and various focused images are produced on the screen. Which statement is always true?

A The image is at the principal focus (focal point) of the lens

B The image is bigger than the object.

C The image is closer to the lens than the object is.

A girl stands at a distance from a large building. She claps her hands and a short time later hears an echo. Why is an echo produced when the sound waves hit the building?

C The sound waves are reflected.

A The sound waves are absorbed.

B The sound waves are diffracted.

D The sound waves are refracted.

Which test could be used to find which end of a magnet is the north pole?

A putting it near a compass needle

B putting it near a ferrous metal

C putting it near a non-ferrous metal

D putting it near a steel spoon

Sound wave P has a greater amplitude and a larger wavelength in air than sound wave Q. How do the loudness and pitch of P compare with the loudness and pitch of Q?

B P is louder and lower in pitch than Q.

A P is louder and higher in pitch than Q.

C P is quieter and higher in pitch than Q.

D P is quieter and lower in pitch than Q.

A piece of iron and a piece of steel are picked up by an electromagnet as shown. The current to the electromagnet is switched off. What happens?

D Only the steel remains magnetised.

A Both the iron and the steel remain magnetised.

B Neither the iron nor the steel remain magnetised.

C Only the iron remains magnetised.

THIRD TERM EXAM PHYSICS

Quiz

•

Physics

•

8th Grade

•

Practice Problem

•

Medium

BIBIL MOHAN

Used 22+ times

FREE Resource

50 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which letter corresponds to the amplitude?

A

B

C

D

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which diagram correctly shows rays passing through a camera lens?

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Water waves change direction when they move from shallow water to deep water.

What is the name of this effect?

A diffraction

B dispersion

C reflection

D refraction

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A plane mirror is on a wall. Which is a correct description of the image formed by the mirror?

A the right way up and smaller than the object

B the right way up and the same size as the object

C upside down and smaller than the object

D upside down and the same size as the object

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A woman tunes her radio to a station broadcasting on 200 m. What does the 200 m tell her about the radio wave?

A its amplitude

B its frequency

C its speed

D its wavelength

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A boy is stranded on an island 500 m from the shore.

He shouts for help, but all he can hear in reply is the echo of his shout from some cliffs. Sound travels at 340 m/s through the air. What is the time interval between the boy shouting and hearing the echo?

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A student wishes to use a magnetising coil to make a permanent magnet from a piece of metal. Which metal should she use?

A aluminium

B copper

C iron

D steel

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THIRD TERM EXAM PHYSICS

50 questions

Which letter corresponds to the amplitude?

Which diagram correctly shows rays passing through a camera lens?

Water waves change direction when they move from shallow water to deep water.

What is the name of this effect?

A plane mirror is on a wall. Which is a correct description of the image formed by the mirror?

A woman tunes her radio to a station broadcasting on 200 m. What does the 200 m tell her about the radio wave?

A boy is stranded on an island 500 m from the shore.

He shouts for help, but all he can hear in reply is the echo of his shout from some cliffs. Sound travels at 340 m/s through the air. What is the time interval between the boy shouting and hearing the echo?

A student wishes to use a magnetising coil to make a permanent magnet from a piece of metal. Which metal should she use?

What is the frequency of this wave?

What is the speed of a wave that has a wavelength of 2m and a frequency
of 2.5Hz?

The ray diagram shows how an image is formed by a converging lens.
What is the focal length of this lens?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Physics

THIRD TERM EXAM PHYSICS

50 questions

Which letter corresponds to the amplitude?

﻿Which diagram correctly shows rays passing through a camera lens?

Water waves change direction when they move from shallow water to deep water.What is the name of this effect?

A plane mirror is on a wall. Which is a correct description of the image formed by the mirror?

A woman tunes her radio to a station broadcasting on 200 m. What does the 200 m tell her about the radio wave?

A boy is stranded on an island 500 m from the shore. He shouts for help, but all he can hear in reply is the echo of his shout from some cliffs. Sound travels at 340 m/s through the air. What is the time interval between the boy shouting and hearing the echo?

A student wishes to use a magnetising coil to make a permanent magnet from a piece of metal. Which metal should she use?

What is the frequency of this wave?

What is the speed of a wave that has a wavelength of 2m and a frequency of 2.5Hz?

The ray diagram shows how an image is formed by a converging lens. What is the focal length of this lens?

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Physics

Which diagram correctly shows rays passing through a camera lens?

Water waves change direction when they move from shallow water to deep water.

What is the name of this effect?

A boy is stranded on an island 500 m from the shore.

He shouts for help, but all he can hear in reply is the echo of his shout from some cliffs. Sound travels at 340 m/s through the air. What is the time interval between the boy shouting and hearing the echo?

What is the speed of a wave that has a wavelength of 2m and a frequency
of 2.5Hz?

The ray diagram shows how an image is formed by a converging lens.
What is the focal length of this lens?