| Wind is caused by the flow of gasses in our atmosphere | Wind |
| We use anemometers to measure wind speed | |
| We can generate energy from wind by using wind turbines | |
| We have been using wind for energy since sailing ships were invented | |
| We use the wind for recreation with kites, wind surfing and paragliding | |
| Not all rain drops reach the ground. Some evaporate while still falling | Rain |
| Raindrops are not tear-shaped, as many believe | |
| Mawsynram in India gets 11 metres of rainfall each year! | |
| Britain's wettest day was in 2015 when Honister Pass had 34 cm of it! | |
| The average speed of a falling raindrop is 20 mph | |
| On hot days the Eiffel Tower grows up to 17 cm taller | Heat |
| The highest temperature in the shade was 57.8°C in Libya in 1922 | |
| In 1995, Chicago experienced a heat wave that caused over 700 deaths | |
| The summer solstice is when the Sun reaches its highest point in the sky | |
| The hottest UK temperature was 38.7°C in Cambridge in 2019 | |
| Scotland sees sleet or snow an average of 38.1 days a year | Snow |
| Every snowflake is a unique shape | |
| The first snowflake photographed was in 1885 | |
| The Inuit people have at least 53 words for snow | |
| In the UK we are more likely to have a white Easter than a white Christmas | |
| Fog is tiny droplets of water suspended in the air close to the ground | Fog |
| There are different types of fog. Follow the link to see what they are | |
| Newfoundland, Canada, has over 200 foggy days every year | |
| Rainbows can appear in fog. These are called "Fogbows" | |
| In mist you can see more than 1 km. In fog visibility drops below 1 km | |
| Hail is frozen precipitation (rain or snow) that has a diameter of 5 mm or more | Hail |
| Hailstones can fall at speeds of over 100 mph | |
| The heaviest hailstone fell in Bangladesh in 1986. it weighed 1.02 kilograms | |
| The largest fell in the USA in 2010. It had a 47 cm circumference | |
| Hailstones have gone through roofs, broken windows and destroyed cars | |
| A bolt of lightning is 5 times hotter than the surface of the Sun | Thunder |
| In Tororo, Uganda, it thunders on more than 250 days a year | |
| Lightning kills thousands of people a year, so stay inside during storms | |
| The odds of being struck by lightning in your lifetime are 1 in 15,300 | |
| The fear of thunder and lightning is called astraphobia | |
| The coldest UK temperature is -27.2°C in the Scottish Highlands | Cold |
| The UK's worst winter was 1962/63 when there were 6 m high snowdrifts | |
| Every winter, more than a septillion snowflakes fall. That's a 1 with 24 zeros! | |
| In the Northern Hemisphere Earth is closest to the Sun during winter | |
| Many times it has been cold enough for the River Thames to freeze solid | |
| Hurricanes are tropical storms that produce heavy rainfall and strong winds | Hurricanes |
| Hurricanes rotate around a centre called the “eye", where the weather is calm | |
| Hurricane winds can reach a speed of 175 mph (280 km/h) | |
| In the Southern Hemisphere hurricanes rotate clockwise | |
| Hurricanes are called cyclones and typhoons, depending on where they are | |
| Clouds are formed by water that has evaporated from Earth's surface | Clouds |
| At any given time, around 67% of Earth's surface is covered by cloud | |
| The average weight of a cloud is about 5 grams per cubic metre | |
| Contrails are clouds formed from the water in aeroplanes' exhausts | |
| There are 10 common types of cloud. Click the link to learn them | |
