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1 1 KS3 SCIENCE - PHYSICS KS3 SCIENCE - PHYSICS The Weather

WEATHER, SEASONS & CLIMATE 2 2

3 3 The weather describes the conditions on a particular day The weather describes the conditions on a particular day Precipitation (rain, hail, snow) Precipitation (rain, hail, snow)

WEATHER, SEASONS & CLIMATE 4 4 The weather describes the conditions on a particular day The weather describes the conditions on a particular day Precipitation (rain, hail, snow) Precipitation (rain, hail, snow) Temperature (cold, mild, hot) Temperature (cold, mild, hot)

WEATHER, SEASONS & CLIMATE 5 5 The weather describes the conditions on a particular day The weather describes the conditions on a particular day Precipitation (rain, hail, snow) Precipitation (rain, hail, snow) Temperature (cold, mild, hot) Temperature (cold, mild, hot) Cloud Cover and Wind Cloud Cover and Wind

WEATHER, SEASONS & CLIMATE 6 6 The year is divided into seasons - months when the weather tends to be cold, or warm or wet The year is divided into seasons - months when the weather tends to be cold, or warm or wet

WEATHER, SEASONS & CLIMATE 7 7 The climate is the average sort of weather throughout the year The climate is the average sort of weather throughout the year

WATER CYCLE 8 8

9 9 The water cycle is the circulation of water through the environment The water cycle is the circulation of water through the environment

WATER CYCLE 10 Rain falls on the land, and much runs off into rivers Rain falls on the land, and much runs off into rivers

WATER CYCLE 11 Water from rivers always reaches the sea eventually Water from rivers always reaches the sea eventually

WATER CYCLE 12 Sea water then evaporates into clouds - the cycle is complete Sea water then evaporates into clouds - the cycle is complete

THE ATMOSPHERE 13

THE ATMOSPHERE 14 Clouds form when water evaporates and the vapour rises, cooling as it does so Clouds form when water evaporates and the vapour rises, cooling as it does so

THE ATMOSPHERE 15 Clouds form when water evaporates and the vapour rises, cooling as it does so Clouds form when water evaporates and the vapour rises, cooling as it does so As it cools, it forms clouds of tiny water droplets, which are light enough to be carried by the wind As it cools, it forms clouds of tiny water droplets, which are light enough to be carried by the wind

THE ATMOSPHERE 16 If the clouds move up higher, e.g. because they meet mountains, the temperature gets colder and the droplets get bigger and heavier, until they fall as rain If the clouds move up higher, e.g. because they meet mountains, the temperature gets colder and the droplets get bigger and heavier, until they fall as rain

THE ATMOSPHERE 17 The Earth receives energy from incoming “Solar Radiation”, i.e. radiation from the sun The Earth receives energy from incoming “Solar Radiation”, i.e. radiation from the sun

THE ATMOSPHERE 18 The Earth receives energy from incoming “Solar Radiation”, i.e. radiation from the sun The Earth receives energy from incoming “Solar Radiation”, i.e. radiation from the sun The Equator is closer to the Sun, so radiation is stronger and climate is hotter The Equator is closer to the Sun, so radiation is stronger and climate is hotter

ROCKS & EROSION 19

ROCKS & EROSION 20 INNER CORE INNER CORE OUTER CORE OUTER CORE MANTLE CRUST The Earth The Earth

ROCKS & EROSION 21 A Volcano A Volcano Hot “Lava” or “Magma” Hot “Lava” or “Magma”

ROCKS & EROSION 22 Lava from volcanoes cools and solidifies to produce “Igneous” rocks Lava from volcanoes cools and solidifies to produce “Igneous” rocks

ROCKS & EROSION 23 Lava from volcanoes cools and solidifies to produce “Igneous” rocks Lava from volcanoes cools and solidifies to produce “Igneous” rocks These rocks are weathered and eroded by rain, snow, wind and frost These rocks are weathered and eroded by rain, snow, wind and frost

ROCKS & EROSION 24 Lava from volcanoes cools and solidifies to produce “Igneous” rocks Lava from volcanoes cools and solidifies to produce “Igneous” rocks “Sedimentary” rocks are formed when rivers carry the pieces away and deposit them “Sedimentary” rocks are formed when rivers carry the pieces away and deposit them These rocks are weathered and eroded by rain, snow, wind and frost These rocks are weathered and eroded by rain, snow, wind and frost

ROCKS & EROSION 25 When sedimentary rocks are buried to great depths the heavy pressure and high temperatures can create “Metamorphic” rocks When sedimentary rocks are buried to great depths the heavy pressure and high temperatures can create “Metamorphic” rocks MARBLE