ScienceEarth & Space

Weather & Climate: fun facts and quiz

The essentials in 7 ideas, with fun facts, an illustrated story and a quiz to see how much you know.

The essentials

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Weather vs Climate

Weather is what’s happening in the sky today. Climate is the average weather of a place over about 30 years.

Key fact
Climate is what you expect; weather is what you get.

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Clouds & Rain

Clouds are tiny water droplets or ice crystals. When droplets merge and grow heavy enough, they fall as rain, snow or hail.

Key fact
Falling raindrops are shaped more like burger buns than teardrops.

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Wind & Storms

Pixel-art picture: Wind & Storms

Wind is air moving from high pressure to low pressure. Hurricanes, typhoons and cyclones are the same kind of storm, named by where they form.

Key fact
A hurricane’s calm centre is called the eye.

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The Greenhouse Effect

Pixel-art picture: The Greenhouse Effect

Greenhouse gases like carbon dioxide trap heat that Earth gives off, keeping the planet warm enough for life. Adding more of them traps more heat.

Key fact
Without it, Earth would average about −18 °C.

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Climate Change

Burning fossil fuels has raised carbon dioxide levels by about 50% since 1750. Earth has warmed by about 1.3 °C, bringing more heatwaves and rising seas.

Key fact
The ten warmest years on record have all come since 2015.

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Climate Zones

Near the equator, sunlight hits directly and it stays warm; near the poles, it arrives at a low angle and it stays cold. That creates climate zones.

Key fact
The hottest air temperature on record is 56.7 °C, in Death Valley.

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Forecasting

Forecasts come from supercomputers crunching data from satellites, balloons and weather stations. Today’s five-day forecast is about as good as a one-day forecast was in 1980.

Key fact
Weather balloons are launched twice a day around the world.

Fun facts

Did you know?

About 6,000 years ago, the Sahara was green, with lakes, grasslands and hippos.

Did you know?

A small fluffy cumulus cloud can hold around 500 tonnes of water, about as heavy as 100 elephants.

Did you know?

Hurricanes spin anticlockwise north of the equator and clockwise south of it.

Did you know?

In 1856, Eunice Foote showed that air with more carbon dioxide warms up more in sunlight.

Did you know?

In 1896, Swedish scientist Svante Arrhenius calculated that more carbon dioxide in the air would warm the planet.

Did you know?

Even near the equator there’s ice: Mount Kilimanjaro, in Tanzania, still has glaciers on its summit.

Did you know?

Meteorology is named after Aristotle’s book Meteorologica, written about 2,300 years ago.

Story: The Captain Who Invented Forecasts

Story time
Picture for the story “The Captain Who Invented Forecasts”

The Captain Who Invented Forecasts

1859. A storm sinks the steamship Royal Charter off Wales, and hundreds drown. Robert FitzRoy, once captain of Darwin’s ship, the Beagle, is shaken.

Story time

Gathering weather reports by telegraph, he sends out storm warnings. In 1861, The Times prints his first daily “forecasts”, a word he coined.

Story time

When forecasts went wrong, newspapers mocked him. But his warnings saved sailors’ lives, and his small office grew into today’s Met Office.

True or false?

Tap your answer to see if you got it, and why.

  1. Question 1 of 10

    Climate describes long-term average weather.

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    True. Usually measured over about 30 years.

  2. Question 2 of 10

    Clouds are made of tiny droplets or ice crystals.

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    True. Far too small and light to fall at first.

  3. Question 3 of 10

    Hurricanes and typhoons are the same kind of storm.

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    True. Typhoon is the name used in the western Pacific.

  4. Question 4 of 10

    Earth’s natural greenhouse effect keeps the planet warmer.

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    True. Without it, Earth would be frozen.

  5. Question 5 of 10

    Carbon dioxide in the air has risen sharply since the 1700s.

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    True. By about 50%, mostly from burning fossil fuels.

  6. Question 6 of 10

    The equator gets more direct sunlight than the poles.

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    True. The Sun is high overhead there all year.

  7. Question 7 of 10

    Supercomputers help make weather forecasts.

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    True. They simulate the atmosphere forward in time.

  8. Question 8 of 10

    One cold day proves the climate isn’t warming.

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    False. A single day is weather. Climate is the long-term trend.

  9. Question 9 of 10

    Raindrops are shaped like teardrops.

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    False. Small ones are round; bigger ones flatten like buns.

  10. Question 10 of 10

    The eye of a hurricane is its windiest part.

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    False. The eye is calm; the strongest winds surround it.

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