On to Earth Science now... Our first Chapter - Water!

'How does water change form?' is the big question of chapter 5. We will be learning all about the importance of water and the water cycle.

On Thursday we made a model of the earth's water - "What if all earth's water would fit in a bottle?"- Where is earths water? We labelled four cups for the four places that fresh water is found on earth: "atmosphere"; "lakes, rivers and streams"; "groundwater"; and "glaciers". We labelled a big bottle "oceans and seas" for the salt water that is found on earth. We then poured water into each cup:

	Amount of Water (total 2200 mL)
	Atmosphere (fresh water)		about drop
	Lakes, rivers, streams (fresh water)		about 4 drops
	Groundwater (fresh water)		13 mL
	Icecaps and glaciers (fresh water)		47 mL
	Oceans and seas (salt water)		2139 mL

We noticed how most of earth's water is found in oceans and seas and is salt water. We inferred why people should use fresh water wisely... because we need fresh water to drink and most of earths water is salt water!