Light travels in straight lines

Question 1

Why can't you see round a corner?

• A. Your eyes are too small.
• B. The wall absorbs your eyesight.
• C. Light travels in straight lines and cannot bend round the wall.
• D. It is always dark round corners.

Question 2

True or false? Light can bend round corners on its own.

• A. True
• B. False

Question 3

Sunbeams through a gap in clouds look like straight lines. What does this show?

• A. Light travels in straight lines.
• B. Clouds make light.
• C. Light is solid.
• D. Light curves upward.

Question 4

True or false? Light can bend round corners on its own.

• A. True
• B. False

Question 5

How does a periscope let you see over a wall?

• A. Two angled mirrors reflect the light down to your eye.
• B. It has a tiny camera inside.
• C. It bends light like a rubber band.
• D. It makes the wall see-through.

Question 6

True or false? A periscope works with only one mirror.

• A. True
• B. False

Question 7

Why can't you see round a corner?

• A. The wall absorbs your eyesight.
• B. It is always dark round corners.
• C. Light travels in straight lines and cannot bend round the wall.
• D. Your eyes are too small.

Question 8

True or false? Light comes out of our eyes so we can see.

• A. True
• B. False

Question 9

Why can't you see round a corner?

• A. Light travels in straight lines and cannot bend round the wall.
• B. It is always dark round corners.
• C. The wall absorbs your eyesight.
• D. Your eyes are too small.

Question 10

True or false? Light travels in straight lines.

• A. True
• B. False