1) Something that allows no light through it a) opaque object b) Translucent object c) transparent object d) blur object 2) When light comes in contact with an opaque object, it can be transferred to heat energy. a) True b) False 3) Light energy cannot travel in empty space. a) True b) False 4) Light waves traveling from one transparent material to another one can bend. a) True b) False 5) Leaves can absorb light energy. a) False b) True 6) The bending of light waves is known as reflection a) False .The bending of light from one translucent material to another is refraction b) True 7) Something that is opaque can reflect light energy a) False. We can't only see objects if the light is reflected back to our eyes b) True. We can only see objects if the light is reflected back to our eyes 8) Leaves can reflect light energy. a) True b) False 9) We can only see objects if the light is reflected back to our eyes a) false b) true 10) In a mirror, the outgoing light ray can be reflected at a different angle than the incoming light ray. a) true b) false 11) The sun is the source of 99.9% of all the energy on the Earth. a) true b) false 12) A material through which light can pass but will be scattered in different directions is known as translucent. a) true b) false 13) Light appears to travel in straight lines a) false b) true 14) When light hits the retina at the back of your eye, images appear upside down a) true b) false 15) A shadow is formed when  a) an object blocks the path of light b) an object reflect the path of light 16) Our eyes __________ light to be able to work a) need b) doesn't need 17) Devices that turn the sun's light energy into electricity a) electric panels b) solar panels c) sun panels d) green pannels 18) to change direction, or bend, light waves a) refract b) reflect c) hit d) light up 19) the process that plants use to convert light energy into food a) condensation b) photosynthesis c) illumination d) light 20) What type of light can most insects see that people cannot a) ultraviolet b) greenlight 21) How long does it take light to travel from the sun to Earth a) 10 minutes b) 8 minutes c) 15 minutes d) 5 minutes 22) Which of these is transparent: a) water b) glass c) steel d) wood 23) Which of these is opaque a) glass b) nail c) water d) table 24) A material through which light can pass but will be scattered in different directions is known as translucent. a) true b) false 25) In photosynthesis, the chloroplasts use this energy to break apart water and carbon dioxide to form carbohydrates and oxygen. a) false b) true 26) We see rainbows when the sun shines through raindrops. Refraction bends the light through water, separating light into different colours. a) false b) true

unit5 light

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?