How much does one human eyeball weigh? A. 5 ounces B. 1 pound C. 1 ounce
One human eyeball weighs about 28 grams or 1 ounce
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15
How much of your eyeball is exposed to the outside world? A. 1/2 B. 1/4 C. 3/5 D. 1/6
About 1/6 of your eyeball (17%) is exposed to the outside world.
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15
Who sees better, hawks or humans
Hawks (and eagles) see better than humans
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monster
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seesaw
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rocket
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baam
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15
What do near-sighted and far-sighted mean?
People who are near-sighted can’t see things far away. People who are far-sighted can’t see things close up. This happens because the eyeball is too long or is
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15
At what age can a baby see most things clearly?
At about two months a baby can see clearly if they have normal eyesight. Before that things are fuzzy and blurry.
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15
How many shades of a color can the typical human eye distinguish? A. 30 B. 6 C. 500 D. 75
The human eye can distinguish about 500 shades of a color.
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15
How many times does the average person blink in one minute?
The average person blinks about 12 times each minute. That's more than 10,000 times a day!
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15
About how many working parts do your eyes have? A. 2 million B. 500,000 C. 600 D. 55
Your eyes are made up of about 2 million working parts.
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lifesaver
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gift
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shark
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banana
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lifesaver
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gold
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fairy
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banana
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15
Which is faster for most people, reading on a computer screen or reading on paper?
People generally read about 25% slower on a computer screen than paper.
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15
Who is more likely to be colorblind, males or females?
Males are more likely to be colorblind (1 in 12 men and 1 in 200 women).
