Chapter 6, Section 1 Hydrosphere LT: I will describe the distribution of freshwater on Earth.

Agree Disagree 1._______ ________ 2._______ ________ 3._______ ________ 5._______ ________ 4._______ ________ About 60% of the water on Earth is contained in the oceans Water can be found in all 3 states of matter on Earth Most of the freshwater on Earth is solid More humans get their drinking water from rivers than any other source Water can escape from plants through their leaves

I. Hydrosphere A. Hydrosphere – all of the water on Earth 1. Includes: oceans, lakes, rivers, groundwater, ice, and clouds

II. Distribution of Water on Earth A. 97% of Earth’s water is salt water in the oceans.

Where do we get our water?

B. 3% of Earth’s water is freshwater. 1. Most of Earth’s freshwater is in ice at the poles (75-76%)

C. Groundwater – water trapped in rock layers deep underground. 1. Most humans get drinking water from groundwater. (rivers are 2 nd )

III. Water Cycle A. Evaporation  Condensation  Precipitation 1.The water cycle renews our supply of freshwater. 2.Percolation: ground absorbing water 3.Run off: water that runs off of the land into bodies of water (lakes, streams, creeks, etc.)

Bill Nye Models the Water Cycle

B. Transpiration – plants release water back into the air through leaves

Agree Disagree 1._______ ________ 2._______ ________ 3._______ ________ 5._______ ________ 4._______ ________ About 60% of the water on Earth is contained in the oceans Water can be found in all 3 states of matter on Earth Most of the freshwater on Earth is solid More humans get their drinking water from rivers than any other source Water can escape from plants through their leaves