11581205
Descripción
Test por Jeffrey Piggott, actualizado hace más de 1 año
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Creado por Jeffrey Piggott
hace más de 6 años
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Pregunta 1
Pregunta
Which of these statements is true?
Respuesta
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Light travels in straight lines.
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Light is stopped when it meets a solid object.
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Light does not travel in straight lines.
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Light will only travel for about 2000 km before it stops
Pregunta 2
Pregunta
Which phrase best completes the following sentence? We see things because:
Respuesta
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they are luminous.
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the Sun shines on them.
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light from them enters our eyes.
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light from our eyes shines on them.
Pregunta 3
Pregunta
Shadows are formed because:
Respuesta
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light will only travel a certain distance before it stops.
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a substance called ‘darkness’ collects behind some objects.
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some objects do not give out light in all directions.
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light cannot go through some objects.
Pregunta 4
Pregunta
Which statement is true?
Respuesta
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Sound travels faster than light.
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Light does not travel. It is either on or off.
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Light travels faster than sound.
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Light and sound travel at the same speed.
Pregunta 5
Pregunta
Opaque objects can:
Respuesta
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transmit and reflect light.
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transmit and absorb light.
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reflect and absorb light.
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only reflect light.
Pregunta 6
Pregunta
Which of these will absorb the most light?
Respuesta
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a white sheet of paper.
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a sheet of clear glass.
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a black piece of card.
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an orange piece of card.
Pregunta 7
Pregunta
How are eyes and pinhole cameras similar?
Respuesta
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They both form an upside-down image.
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They both use a lens to focus light.
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They both convert light to electrical signals.
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They both take photographs.
Pregunta 8
Pregunta
Which part of the eye converts light energy to electrical signals?
Respuesta
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the lens
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the optic nerve
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the pupil
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the retina
Pregunta 9
Pregunta
Which of these statements is true?
Respuesta
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Light bounces evenly off rough surfaces.
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Light bounces evenly off smooth surfaces like mirrors.
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Light bounces off mirrors in all directions.
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Light does not bounce off mirrors.
Pregunta 10
Pregunta
A plane mirror is:
Respuesta
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a flat mirror.
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a curved mirror.
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a shiny mirror.
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a mirror used in aeroplanes.
Pregunta 11
Respuesta
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20°
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30°
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40°
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60°
Pregunta 12
Pregunta
Your image in a mirror:
Respuesta
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is not as good looking as I am.
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is upside down.
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is always bigger than you.
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seems to be behind the mirror.
Pregunta 13
Pregunta
Refraction is what happens when light:
Respuesta
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hits an opaque object.
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bounces off a mirror.
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is scattered unevenly by a rough surface.
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changes direction as it goes from one substance into another at an angle.
Pregunta 14
Pregunta
Refraction occurs because:
Respuesta
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light speeds up when it goes from air to glass or water.
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light slows down when it goes from air to glass or water.
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light stops when it goes from air to glass or water.
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light reflects inside transparent materials.
Pregunta 15
Pregunta
Which diagram shows the correct rays?
Respuesta
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Image:Rays A (binary/octet-stream)
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Image:Rays B (binary/octet-stream)
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Image:Rays C (binary/octet-stream)
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Image:Rays D (binary/octet-stream)
Pregunta 16
Pregunta
Which statement is not true?
Respuesta
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A rainbow is a spectrum of colours.
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White light is made up of many colours.
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A spectrum can only be made using paints.
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A prism can split white light into a spectrum.
Pregunta 17
Pregunta
A red filter:
Respuesta
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absorbs red light.
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lets through all colours of light.
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only lets red light through.
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changes all the colours into red light.
Pregunta 18
Pregunta
Blue objects look blue because:
Respuesta
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they reflect all colours.
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they refract all colours.
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they absorb blue light.
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they reflect blue light.
Pregunta 19
Pregunta
Danny is wearing white shorts and a red shirt.
Which statement is most likely to be is true?
Respuesta
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In blue light, his shorts look blue and his shirt looks black.
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In blue light, his shorts look blue and his shirt looks red.
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In red light, his shorts look red and his shirt looks black.
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In green light, his shorts look red and his shirt looks yellow.
Pregunta 20
Pregunta
Why does a lens change the path of light?
Respuesta
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Light changes direction when it goes into the glass and when it comes out of it.
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Light changes direction in the centre of the lens.
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Light is reflected by the surface of the lens.
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Light travels faster in glass than it does in air.
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