10 questions · Four answers, and only one is true. Can you spot it?
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Question 1 of 10
How do we move our body?
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Blood delivers what muscles need, but it does no pushing.
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A bone is a stiff pole; it cannot move without a muscle.
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It travels down nerves. Muscles can only pull, so they work in teams — one pulls each way.
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A muscle only ever pulls — that is why they come in pairs.
Show the answer
- A Blood delivers what muscles need, but it does no pushing.
- B A bone is a stiff pole; it cannot move without a muscle.
- C It travels down nerves. Muscles can only pull, so they work in teams — one pulls each way.
- D A muscle only ever pulls — that is why they come in pairs.
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Question 2 of 10
Why do we have bones?
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They also give muscles something to pull on. The skull guards the brain, the ribs the heart and lungs.
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Three tiny bones do help in each ear — but that is three out of about two hundred.
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Bones do store some things, but food is not one of them.
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Gravity does that for everything, bones or no bones.
Show the answer
- A They also give muscles something to pull on. The skull guards the brain, the ribs the heart and lungs.
- B Three tiny bones do help in each ear — but that is three out of about two hundred.
- C Bones do store some things, but food is not one of them.
- D Gravity does that for everything, bones or no bones.
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Question 3 of 10
Why does our heart beat?
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It delivers oxygen and food — about a hundred thousand squeezes a day, without ever being told.
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It does speed up — but it never stops when we are calm.
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Being busy all over is what keeps you warm; the heart just pumps.
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It is doing a job, not sending a message.
Show the answer
- A It delivers oxygen and food — about a hundred thousand squeezes a day, without ever being told.
- B It does speed up — but it never stops when we are calm.
- C Being busy all over is what keeps you warm; the heart just pumps.
- D It is doing a job, not sending a message.
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Question 4 of 10
How do we digest food?
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Chewing is only the start of a very long journey.
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Then the long tubes take out what the body needs, and the rest travels on to the end.
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Nothing burns inside you; the food is broken into small pieces.
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Your dinner can spend a whole day or more travelling through you.
Show the answer
- A Chewing is only the start of a very long journey.
- B Then the long tubes take out what the body needs, and the rest travels on to the end.
- C Nothing burns inside you; the food is broken into small pieces.
- D Your dinner can spend a whole day or more travelling through you.
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Question 5 of 10
Why do we sneeze?
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And germs. Sensors spot the bother, the brain says go, and out rushes the air.
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A cold nose gives you shivers, not sneezes.
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A sneeze is the blow — it happens whether you want it or not.
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You sneeze on a small breath just as easily.
Show the answer
- A And germs. Sensors spot the bother, the brain says go, and out rushes the air.
- B A cold nose gives you shivers, not sneezes.
- C A sneeze is the blow — it happens whether you want it or not.
- D You sneeze on a small breath just as easily.
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Question 6 of 10
Why do we breathe?
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We breathe out what it no longer wants — about twenty thousand times a day, almost all without a thought.
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Panting cools a dog; people breathe to live.
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The moving is how the air gets in; it is not the point.
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Talking borrows the breath on its way out.
Show the answer
- A We breathe out what it no longer wants — about twenty thousand times a day, almost all without a thought.
- B Panting cools a dog; people breathe to live.
- C The moving is how the air gets in; it is not the point.
- D Talking borrows the breath on its way out.
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Question 7 of 10
Why do we get sick?
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There is a real cause, small enough to be invisible.
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Cold weather alone does not make anyone ill.
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Good food helps you fight, but germs are what make you ill.
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The body sends its own army after them; a fever is part of that fight, and washing hands keeps many out.
Show the answer
- A There is a real cause, small enough to be invisible.
- B Cold weather alone does not make anyone ill.
- C Good food helps you fight, but germs are what make you ill.
- D The body sends its own army after them; a fever is part of that fight, and washing hands keeps many out.
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Question 8 of 10
How do we see things?
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The eye really does make a picture; the brain then reads it.
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It makes a tiny picture there, upside down — and your brain flips it without ever telling you.
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What travels is light bouncing off them.
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Shut off every light and you see nothing at all, however wide you open your eyes.
Show the answer
- A The eye really does make a picture; the brain then reads it.
- B It makes a tiny picture there, upside down — and your brain flips it without ever telling you.
- C What travels is light bouncing off them.
- D Shut off every light and you see nothing at all, however wide you open your eyes.
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Question 9 of 10
Why do we cry?
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They keep the eye wet too. Humans may be the only animals that cry because of how they feel.
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Tears wash the eye, not the face.
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The eye makes the tears on purpose, when it needs them.
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People cry with laughter and with relief too.
Show the answer
- A They keep the eye wet too. Humans may be the only animals that cry because of how they feel.
- B Tears wash the eye, not the face.
- C The eye makes the tears on purpose, when it needs them.
- D People cry with laughter and with relief too.
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Question 10 of 10
Why do our teeth fall out?
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Brushing matters, but a wobbly milk tooth is good news.
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Milk teeth wobble out on soft food too, at just the right age.
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A milk tooth leaves with its root dissolved, not worn down.
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It loosens the little one. About twenty milk teeth make way for up to thirty-two grown-up ones.
Show the answer
- A Brushing matters, but a wobbly milk tooth is good news.
- B Milk teeth wobble out on soft food too, at just the right age.
- C A milk tooth leaves with its root dissolved, not worn down.
- D It loosens the little one. About twenty milk teeth make way for up to thirty-two grown-up ones.
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