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Which of the following is NOT a source of light? a)the sun/ b)a lamp/ c)the moon
c)the moon
What does a source of light do? a)makes light/ b)reflects light/ c)absorbs light
a)makes light
how far does light travel in a second (100,000km/ 200,000 km/ 300,000km)
300,000km
what will happen if we stand in a dark room
we will see nothing
how to protect our eyes when light is too dim
put in more bulbs in a room with TV/ open the window or turn on the lamps when you read book
how to protect our eyes when light is too bright
wear sunglasses in bright sunlight/ wear safety items during welding
how we see object that is a light source
seeing an object that is not a light source
which one is a light source? (candles/ sunflowers/paper)
candles
which one is a light source? (the sun/ book)
book
how does we see objects
light travels to the object and the to our eyes (/) / light travels to our eyes directly
which one is correct about a ray of light
B
what is the beams from light
ray of light (āļĢāļąāļ‡āļŠāļĩāļ‚āļ­āļ‡āđāļŠāļ‡)
give example for man-made light source
fireworks, light bulbs, campfires, flashlight, match
give example for natural light source
firefiles, lightning, stars
what types of light sources (2 types)
natural light source, man-made
what is called "a light source"
an object can make light
Which of the following statements is correct? a)All light is reflected/ b) The moon is a light source/ c)Light travels in straight lines
stright line & all direction