Light Quiz

Descrição

KS3 test on light.
Jeffrey Piggott
Quiz por Jeffrey Piggott, atualizado more than 1 year ago
Jeffrey Piggott
Criado por Jeffrey Piggott mais de 6 anos atrás
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Resumo de Recurso

Questão 1

Questão
Which of these statements is true?
Responda
  • Light travels in straight lines.
  • Light is stopped when it meets a solid object.
  • Light does not travel in straight lines.
  • Light will only travel for about 2000 km before it stops

Questão 2

Questão
Which phrase best completes the following sentence? We see things because:
Responda
  • they are luminous.
  • the Sun shines on them.
  • light from them enters our eyes.
  • light from our eyes shines on them.

Questão 3

Questão
Shadows are formed because:
Responda
  • light will only travel a certain distance before it stops.
  • a substance called ‘darkness’ collects behind some objects.
  • some objects do not give out light in all directions.
  • light cannot go through some objects.

Questão 4

Questão
Which statement is true?
Responda
  • Sound travels faster than light.
  • Light does not travel. It is either on or off.
  • Light travels faster than sound.
  • Light and sound travel at the same speed.

Questão 5

Questão
Opaque objects can:
Responda
  • transmit and reflect light.
  • transmit and absorb light.
  • reflect and absorb light.
  • only reflect light.

Questão 6

Questão
Which of these will absorb the most light?
Responda
  • a white sheet of paper.
  • a sheet of clear glass.
  • a black piece of card.
  • an orange piece of card.

Questão 7

Questão
How are eyes and pinhole cameras similar?
Responda
  • They both form an upside-down image.
  • They both use a lens to focus light.
  • They both convert light to electrical signals.
  • They both take photographs.

Questão 8

Questão
Which part of the eye converts light energy to electrical signals?
Responda
  • the lens
  • the optic nerve
  • the pupil
  • the retina

Questão 9

Questão
Which of these statements is true?
Responda
  • Light bounces evenly off rough surfaces.
  • Light bounces evenly off smooth surfaces like mirrors.
  • Light bounces off mirrors in all directions.
  • Light does not bounce off mirrors.

Questão 10

Questão
A plane mirror is:
Responda
  • a flat mirror.
  • a curved mirror.
  • a shiny mirror.
  • a mirror used in aeroplanes.

Questão 11

Questão
How big will the angle of reflection be?
Responda
  • 20°
  • 30°
  • 40°
  • 60°

Questão 12

Questão
Your image in a mirror:
Responda
  • is not as good looking as I am.
  • is upside down.
  • is always bigger than you.
  • seems to be behind the mirror.

Questão 13

Questão
Refraction is what happens when light:
Responda
  • hits an opaque object.
  • bounces off a mirror.
  • is scattered unevenly by a rough surface.
  • changes direction as it goes from one substance into another at an angle.

Questão 14

Questão
Refraction occurs because:
Responda
  • light speeds up when it goes from air to glass or water.
  • light slows down when it goes from air to glass or water.
  • light stops when it goes from air to glass or water.
  • light reflects inside transparent materials.

Questão 15

Questão
Which diagram shows the correct rays?

Questão 16

Questão
Which statement is not true?
Responda
  • A rainbow is a spectrum of colours.
  • White light is made up of many colours.
  • A spectrum can only be made using paints.
  • A prism can split white light into a spectrum.

Questão 17

Questão
A red filter:
Responda
  • absorbs red light.
  • lets through all colours of light.
  • only lets red light through.
  • changes all the colours into red light.

Questão 18

Questão
Blue objects look blue because:
Responda
  • they reflect all colours.
  • they refract all colours.
  • they absorb blue light.
  • they reflect blue light.

Questão 19

Questão
Danny is wearing white shorts and a red shirt. Which statement is most likely to be is true?
Responda
  • In blue light, his shorts look blue and his shirt looks black.
  • In blue light, his shorts look blue and his shirt looks red.
  • In red light, his shorts look red and his shirt looks black.
  • In green light, his shorts look red and his shirt looks yellow.

Questão 20

Questão
Why does a lens change the path of light?
Responda
  • Light changes direction when it goes into the glass and when it comes out of it.
  • Light changes direction in the centre of the lens.
  • Light is reflected by the surface of the lens.
  • Light travels faster in glass than it does in air.

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