1) We see objects because…. a) light shines bright b) they either give out or reflect light c) they either give out or absorb light 2) When light hits an object some of it…. a) bounces off and this light enters the eye b) shines really bright in the eyes c) bounces off objects and doesn’t enter the eye 3) Angle of incidence = Angle of reflection a) True b) False c) Unsure 4) What happens during refraction of light? a) The light stays the same b) The light bounces off the glass c) As light enters a glass block it may bend 5) What is white light? a) Only red, orange and yellow b) only white c) a mixture of colours known as a rainbow 6) The rainbow of colours scientific name is…. a) the visible spectrum b) the visible rainbow c) the visible colour wheel 7) When light enters a prism it splits into different colours. This is known as… a) attraction b) refraction c) Inflection 8) The 7 colours of the rainbow can be remembered as… a) R O Y G B I V b) R O Y G P I V c) R O Y G B I W 9) A convex lens is shaped like… a) a circle b) a square c) an oval 10) A concave lens is …  a) the same width all over b) like a circle c) narrow in the middle and wide at the outsides 11) The lens in the eye …. a) focus light on glasses b) Focuses light on the retina c) focuses light on the pupil 12) What is the name for the clear protective layer of the front of the eye that refracts light? a) the cornea b) the iris c) the pupil 13) Name the hole at the front of the eye that allows light to enter? a) lens b) eyeball c) pupil 14) The iris is… a) the protective layer at the front of the eye that refracts light b) the coloured muscle that alters the size of the pupil. It controls the amount of light entering the eyes c) A hole at the front of the eye that allows light to enter 15) Describe the retina .. a) a controlled muscle that alters the size of the pupil b) light sensitive layer that converts light to the brain waves c) light sensitive layer that converts light to electrical impulses 16) Long sight is ….. a) can see objects that are far away but have trouble focussing the light coming from objects that are close to their eye b) can see objects close clearly but have trouble focussing the light away from objects that are far away c) the light focused on front of the retina 17) Long sight can be corrected by using a … a) thick glasses b) concave lens c) convex lens 18) Short sight the light focuses in front of the retina? a) true b) false c) don’t know 19) A concave lens is used to correct short sight? a) unsure b) false c) true 20) Some applications of light are… a) phones, toaster, microscope, periscope & telescope b) periscope, microscope, telescope, phone, tv & cats eyes c) optical fibres, cats eyes, tv & kettle 21) Name the parts of the electromagnetic spectrum in order? a) Radio waves, microwaves, infrared, visible, ultra violet, x-ray & gamma b) radio wave, microwave, infrared, x-ray & gamma c) radio wave, microwave, infrared, visible, ultra violet 22) Describe a use for refraction of visible light? a) to see, measure things, photography b) for medical images of bones c) used in remote comtrols 23) Gamma rays are used for? a) in remote controls b) medical treatment and to sterilise things c) communication and media 24) Ultra violet light is used in? a) in medical treatment b) medical images c) sunbeds, kill bacteria & security marking 25) Radio waves are the longest wavelength? a) false b) true c) unsure 26) The shortest time wave length is… a) x-ray b) gamma c) ultra violet 27) Light travels in curved lines?  a) false b) unsure c) true 28) Where is the retina located in the eye? a) Near the back of the eye at the top b) the very front of the eye c) the hole in the middle of the eye 29) Light travels at 300 million metres per second? a) unsure b) false c) true 30) Convex (oval) lens corrects LONG sight a) true b) false c) don’t know 31) Concave (narrow in the middle) lens corrects SHORT sight  a) unsure b) false c) true

S1 Biology - Optics

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