9 questions · Four answers, and only one is true. Can you spot it?
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Question 1 of 9
Where do clouds come from?
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It gathers on specks of dust: warm air carries it up, and up high it cools back into droplets.
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Fly through one and it feels like cool, damp fog.
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Clouds form over empty oceans where there are no chimneys at all.
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Mountains help clouds form, but the water comes from the air.
Show the answer
- A It gathers on specks of dust: warm air carries it up, and up high it cools back into droplets.
- B Fly through one and it feels like cool, damp fog.
- C Clouds form over empty oceans where there are no chimneys at all.
- D Mountains help clouds form, but the water comes from the air.
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Question 2 of 9
What is hail?
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Icebergs float at sea and never leave it.
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Snow is soft and six-sided; hail is hard and round.
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Wind can lift no such thing; hail is born inside the cloud.
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Each throw adds a layer, and they grow until they are too heavy for the cloud to lift.
Show the answer
- A Icebergs float at sea and never leave it.
- B Snow is soft and six-sided; hail is hard and round.
- C Wind can lift no such thing; hail is born inside the cloud.
- D Each throw adds a layer, and they grow until they are too heavy for the cloud to lift.
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Question 3 of 9
What is fog?
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Fog is made of the same air you are standing in, chilled.
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Cold air near the ground turns invisible water into a mist you can walk through.
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Fog appears over empty fields and lakes where nothing is burning.
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Fog droplets are far too small and light to fall.
Show the answer
- A Fog is made of the same air you are standing in, chilled.
- B Cold air near the ground turns invisible water into a mist you can walk through.
- C Fog appears over empty fields and lakes where nothing is burning.
- D Fog droplets are far too small and light to fall.
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Question 4 of 9
Why does it rain?
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The sea's waves never reach anywhere near the clouds.
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Nobody squeezes them — they simply grow too heavy to hold on.
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Water floats up as invisible vapour, gathers into droplets, and falls back down.
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Wind moves clouds about, but it cannot make water.
Show the answer
- A The sea's waves never reach anywhere near the clouds.
- B Nobody squeezes them — they simply grow too heavy to hold on.
- C Water floats up as invisible vapour, gathers into droplets, and falls back down.
- D Wind moves clouds about, but it cannot make water.
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Question 5 of 9
What makes the wind blow?
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Trees wave because of the wind, not the other way round.
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Spinning bends the wind's path, but something has to get it going first.
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There is wind far inland, hundreds of miles from any sea.
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The Sun is what warms it. Wind is simply air on the move.
Show the answer
- A Trees wave because of the wind, not the other way round.
- B Spinning bends the wind's path, but something has to get it going first.
- C There is wind far inland, hundreds of miles from any sea.
- D The Sun is what warms it. Wind is simply air on the move.
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Question 6 of 9
What are thunder and lightning?
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Lightning flashes at midnight too, when the Sun is nowhere near.
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Clouds are soft mist; they cannot bang.
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You always see the flash first, because light travels much faster than sound.
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Charge builds up in the cloud until it jumps — and the air bangs as it goes.
Show the answer
- A Lightning flashes at midnight too, when the Sun is nowhere near.
- B Clouds are soft mist; they cannot bang.
- C You always see the flash first, because light travels much faster than sound.
- D Charge builds up in the cloud until it jumps — and the air bangs as it goes.
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Question 7 of 9
Why do we see rainbows?
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Rainbows need falling raindrops, not clouds.
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Look the other way — a rainbow always stands opposite the Sun, up in the air.
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They bend the light on the way through, which is why you need sunshine and rain at the same time.
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The colours were in the sunlight all along.
Show the answer
- A Rainbows need falling raindrops, not clouds.
- B Look the other way — a rainbow always stands opposite the Sun, up in the air.
- C They bend the light on the way through, which is why you need sunshine and rain at the same time.
- D The colours were in the sunlight all along.
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Question 8 of 9
Why is the sky blue?
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Sunlight holds every colour, and blue is the one that bounces best.
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There is blue sky above deserts and snow fields too.
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There is no ceiling — the air simply thins away into space.
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The Sun's light is white: all the colours mixed together.
Show the answer
- A Sunlight holds every colour, and blue is the one that bounces best.
- B There is blue sky above deserts and snow fields too.
- C There is no ceiling — the air simply thins away into space.
- D The Sun's light is white: all the colours mixed together.
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Question 9 of 9
Why does it snow?
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A cloud is not solid — there is nothing there to break.
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That makes hard little pellets, not soft six-sided flakes.
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When it is cold enough up there, the crystals grow and drift down as flakes — always six-sided.
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Every flake is a real ice crystal, and always has six sides.
Show the answer
- A A cloud is not solid — there is nothing there to break.
- B That makes hard little pellets, not soft six-sided flakes.
- C When it is cold enough up there, the crystals grow and drift down as flakes — always six-sided.
- D Every flake is a real ice crystal, and always has six sides.
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