咸水与淡水
Salt Water vs Fresh Water
描述并绘制不同水体中咸水和淡水的含量，用图表说明地球上水资源的分布情况。
Describe and graph the amounts of salt water and fresh water in various reservoirs to provide evidence about the distribution of water on Earth
学习证据 / Evidence
- 说出地球上的水约有97%是海洋中的咸水
- 描述淡水存在于哪些地方：冰川/冰盖、地下水、河流、湖泊
- 绘制或解读显示咸水与淡水相对比例的图表
- State that about 97% of Earth's water is salt water in the oceans
- Describe where fresh water is found: glaciers/ice caps, groundwater, rivers, lakes
- Create or interpret a graph showing the relative amounts of salt water vs fresh water
评估问题 / Assessment
{{name}}能解释地球上的水大部分是咸的海水，只有极少一部分是我们饮用的淡水，并能用图表表示出来吗？
Can {{name}} explain that most of Earth's water is salty ocean water, and only a tiny fraction is the fresh water we drink, and show this on a graph?