1) Which of these statements is true? a) Light will only travel for about 2000km before it stops b) Light is stopped when it meets a solid object c) Light does not travel in straight lines d) Light traels in straight lines 2) Which phrase best completes the following sentence? We see things because... a) A light from our eyes shines on them b) Light from them enters our eyes c) The sun shines on them d) They are luminous 3) Shadows are formed because a) Light cannot go through some objects b) A substance called "darkness" collects behind some objects c) Some objects do not give out light in all directions d) Light will only travel a certain distancve before it stops 4) Which statement is true? a) Light does not travel. It is either on or off. b) Sound travels faster than light. c) Ligt and sound travel at the same speed. d) Ligt travels faster tan sound. 5) Opaque objects can... a) Transmit and absorb light b) Transmit and reflect light c) Ony reflect light d) Refect and absorb ligt 6) Which of these will absorb the most light? a) A black piece of card b) A sheet of clear glass c) A white sheet of paper d) An orange piece of card 7) Which part of the eye converts light energy to electrical signals? a) lens b) optic nerve c) retina d) pupil 8) Which of tese statements is true? a) Light bounces evenly off rough surfaces b) Ligt bounces evenly off smooth surfaces like mirrors c) Light des not bounce off mirrors d) Light bounces off mirrors in all directions 9) If the angle of reflection is 30o, what was the angle of incidence? a) 20 b) 30 c) 40 d) 60 10) Your image in a mirror... a) seems to be behind the mirror b) is always bigger than you c) is upside down d) is significantly less handsome than you 11) Refraction is what happens when light... a) Hits an opaque object b) changes direction as it goes from one substance into another c) is scattered unevenly by a rough surface d) bounces off a mirror 12) Refraction occurs because... a) Light speed up when it goes from air to a glass of water b) Light reflects inside transparrent materials c) Ligt stops when it goes from air to glass or water d) Light slows down when it goes from air to glass or water 13) Which statement is not true? a) A rainbow is a spectrum of colours b) A spectrum can only be made using paints c) White light is made up of many colours d) A prism can split white light into a spectrum 14) A red filter... a) lets through all colours of light b) absorbs red light c) changes all colours of light into red d) only lets red ligt through 15) Blue objects look blue because... a) They only reflect blue lght b) They absorb blue ligt c) They refract all colours d) They reflect all colours

Light quiz

by Anonymous
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