2. LEFT CLICK OR PRESS SPACE BAR TO ADVANCE, PRESS P BUTTON TO GO BACK, PRESS ESC BUTTON TO END LEFT CLICK OR PRESS SPACE BAR TO ADVANCE, PRESS P BUTTON TO GO BACK, PRESS ESC BUTTON TO END COMPUTER PRESENTATIONS FOR KS3 SCIENCE - PHYSICS ©2003, STEVE PARKER COMPUTER PRESENTATIONS FOR KS3 SCIENCE - PHYSICS ©2003, STEVE PARKER

3. 1 1 KS3 SCIENCE - PHYSICS KS3 SCIENCE - PHYSICS The Weather

4. WEATHER, SEASONS & CLIMATE 2 2

5. 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)

6. 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)

7. 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

8. 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

9. 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

10. WATER CYCLE 8 8

11. 9 9 The water cycle is the circulation of water through the environment The water cycle is the circulation of water through the environment

12. 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

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

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

15. THE ATMOSPHERE 13

16. 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

17. 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

18. 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

19. 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

20. 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

21. ROCKS & EROSION 19

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

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

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

25. 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

26. 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

27. 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