Question

1. choose the answer that best completes the sentence below.

we are able to see objects ______ when light moves, it bounces off of the objects and into our eyes.
a. until
b. because
c. thus
d. even

1. what is created when the movement of light is blocked by an object and cannot pass through to the other side?
2. why can you see your own face in a mirror?
3. at the end of the passage, the author writes, \light bounces around! if it didnt, wed be left in the dark.\ what does the author mean by this?

Explanation:

1. The second clause explains the reason we can see objects, so a conjunction for cause is needed.
2. When light is blocked and cannot pass an object, a dark area forms behind it.
3. Mirrors have a smooth, reflective surface that bounces light from your face back to your eyes.
4. The author means light's reflection (bouncing) is what lets us see; without it, there would be no visible light reaching our eyes, leaving us unable to see anything.

Answer:

1. B. because
2. A shadow is created.
3. You can see your face in a mirror because the smooth, reflective surface of the mirror reflects (bounces) light from your face back into your eyes.
4. The author means that the bouncing (reflection) of light is what allows us to see the world around us. If light did not bounce off objects, no light would reach our eyes, so we would be unable to see anything, leaving us in total darkness.