Session Date
Lesson Topic
The Water Cycle
Lesson Outline
We learned that the Earth never gets water added to it, nor does water disappear. We learned that most of the evaporation and precipitation happens in the ocean because it is the largest body of water. Water is constantly recycled in the water cycle and freshwater is scarce. About 97% of all the water on the Earth is in the oceans, and so only 3% is fresh water. Next we created a book in which we listed the ways that we use water and the fresh water sources. We learned that the water cycle has no beginning and no end. We were curious as to why the ocean is salty so we did some investigation and learned that salt in the ocean comes from rocks on land. The rain that falls on the land contains some dissolved carbon dioxide from the surrounding air. This causes the rainwater to be slightly acidic due to carbonic acid (which forms from carbon dioxide and water). As the rain erodes the rock, acids in the rainwater break down the rock and carry the sediment to the ocean. We modeled the total amount of water on the Earth and observed that the freshwater amount is very small. Then we modeled where each source of freshwater is located. We watched a presentation on the Water Cycle that showed us real examples of Earth’s runoff water and leaves performing transpiration. Then we pretended we were a drop of water and described our journey through the Water Cycle. Next we played a game where we answered questions on the water cycle.
Session Minutes
60
Minutes Student Attended
60
Session Hours
1.00
Hours Attended
1.00
Entry Status
Review Status
Student Name(s)
Subject
School