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Light Quiz
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Questions in this quiz (20)
1Which of these statements is true?
- ALight travels in straight lines.
- BLight is stopped when it meets a solid object.
- CLight does not travel in straight lines.
- DLight will only travel for about 2000 km before it stops
2Which phrase best completes the following sentence? We see things because:
- Athey are luminous.
- Bthe Sun shines on them.
- Clight from them enters our eyes.
- Dlight from our eyes shines on them.
3 Shadows are formed because:
- Alight will only travel a certain distance before it stops.
- Ba substance called ‘darkness’ collects behind some objects.
- Csome objects do not give out light in all directions.
- Dlight cannot go through some objects.
4Which statement is true?
- ASound travels faster than light.
- BLight does not travel. It is either on or off.
- CLight travels faster than sound.
- DLight and sound travel at the same speed.
5Opaque objects can:
- Atransmit and reflect light.
- Btransmit and absorb light.
- Creflect and absorb light.
- Donly reflect light.
6Which of these will absorb the most light?
- Aa white sheet of paper.
- Ba sheet of clear glass.
- Ca black piece of card.
- Dan orange piece of card.
7How are eyes and pinhole cameras similar?
- AThey both form an upside-down image.
- BThey both use a lens to focus light.
- CThey both convert light to electrical signals.
- DThey both take photographs.
8Which part of the eye converts light energy to electrical signals?
- Athe lens
- Bthe optic nerve
- Cthe pupil
- Dthe retina
9 Which of these statements is true?
- ALight bounces evenly off rough surfaces.
- BLight bounces evenly off smooth surfaces like mirrors.
- CLight bounces off mirrors in all directions.
- DLight does not bounce off mirrors.
10 A plane mirror is:
- Aa flat mirror.
- Ba curved mirror.
- Ca shiny mirror.
- Da mirror used in aeroplanes.
11How big will the angle of reflection be?
- A20°
- B30°
- C40°
- D60°
12Your image in a mirror:
- Ais not as good looking as I am.
- Bis upside down.
- Cis always bigger than you.
- Dseems to be behind the mirror.
13Refraction is what happens when light:
- Ahits an opaque object.
- Bbounces off a mirror.
- Cis scattered unevenly by a rough surface.
- Dchanges direction as it goes from one substance into another at an angle.
14Refraction occurs because:
- Alight speeds up when it goes from air to glass or water.
- Blight slows down when it goes from air to glass or water.
- Clight stops when it goes from air to glass or water.
- Dlight reflects inside transparent materials.
15 Which diagram shows the correct rays?
- A
- B
- C
- D
- A
16 Which statement is not true?
- AA rainbow is a spectrum of colours.
- BWhite light is made up of many colours.
- CA spectrum can only be made using paints.
- DA prism can split white light into a spectrum.
17A red filter:
- Aabsorbs red light.
- Blets through all colours of light.
- Conly lets red light through.
- Dchanges all the colours into red light.
18 Blue objects look blue because:
- Athey reflect all colours.
- Bthey refract all colours.
- Cthey absorb blue light.
- Dthey reflect blue light.
19Danny is wearing white shorts and a red shirt.
Which statement is most likely to be is true?- AIn blue light, his shorts look blue and his shirt looks black.
- BIn blue light, his shorts look blue and his shirt looks red.
- CIn red light, his shorts look red and his shirt looks black.
- DIn green light, his shorts look red and his shirt looks yellow.
20 Why does a lens change the path of light?
- ALight changes direction when it goes into the glass and when it comes out of it.
- BLight changes direction in the centre of the lens.
- CLight is reflected by the surface of the lens.
- DLight travels faster in glass than it does in air.
Information
- Description
- KS3 test on light.
- Author
- Jeffrey Piggott
- Language
- English
- Views
- 1,556
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