Interactive Primary Newsletter 21

Interactive Primary Newsletter 21

Earth and Space Changing materials

Describe in simple terms the changes that occur when water is heated or cooled
Level C

Model of the Water Cycle
Children can make a model of the water cycle using easily obtained materials. One thing you will need is a screw top jar. An old sweetie jar would be ideal, (local sweet shop), or a screw top kitchen storage jar (Pound Stretcher, Ikea, etc.). Other items needed are small plants, an egg cup or similar filled with water, rocks, sand and soil. Lay stones and pebbles in the bottom of the jar, cover with a layer of sand, then add some top soil or compost. Fill the egg cup with water and place in a reasonably central position in the jar. Plant out one or two small plants in the soil then screw the lid down. Place the jar at a window with the sun as a heat source or close to a classroom heater.
It will not take long for the water cycle to begin. Condensation will form on the walls of the container, the water in our mini lake will slowly evaporate and if you are lucky a pool of water will form at the bottom of the jar. Should this occur it could lead to a discussion on wells and how people in parts of the UK (and other parts of Earth) find their drinking water.

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Interactive Primary Newsletter 21
Earth and Space Changing materials
Describe in simple terms the changes that occur when water is heated or cooled	Level C
Model of the Water Cycle Children can make a model of the water cycle using easily obtained materials. One thing you will need is a screw top jar. An old sweetie jar would be ideal, (local sweet shop), or a screw top kitchen storage jar (Pound Stretcher, Ikea, etc.). Other items needed are small plants, an egg cup or similar filled with water, rocks, sand and soil. Lay stones and pebbles in the bottom of the jar, cover with a layer of sand, then add some top soil or compost. Fill the egg cup with water and place in a reasonably central position in the jar. Plant out one or two small plants in the soil then screw the lid down. Place the jar at a window with the sun as a heat source or close to a classroom heater. It will not take long for the water cycle to begin. Condensation will form on the walls of the container, the water in our mini lake will slowly evaporate and if you are lucky a pool of water will form at the bottom of the jar. Should this occur it could lead to a discussion on wells and how people in parts of the UK (and other parts of Earth) find their drinking water.