Fun Facts About H 2 O Water is

Fun Facts About H 2 O �Water is 800 times more dense than air � 20% of global electricity is produced by hydropower �More than 90% of all renewable energy is hydropower �Water is the only thing on Earth that gets larger when it freezes (that’s why ice floats!) � 70% of the human body is water

Water Power

The Big Picture �Unit ◦ ◦ 1: Water Power 1. 1 Hydro 1. 2 Wave 1. 3 Tidal 1. 4 OTEC Grand Coulee Dam, Columbia River, Washington

Essential Questions (pt 1) �What is the water cycle? �What drives the water cycle? �How much water on Earth & where is it? �How is flowing water an energy source?

Essential Questions (pt 2) �How can work be done with water? �What is hydropower & what’s the potential? �What are the pros/cons of hydro power? �How does hydropower affect the environment?

How much water is on Earth? • 70% of Earth’s surface is covered by …but how much WATER is water on Earth? ? ? • 96% of all water on Earth is in the ocean 326, 000, 000, 0 • Only 2% of all water is fresh water 00 gallons That much water would form a sphere about 860 miles in diameter!!! That’s 40% of the size of the moon!!! http: //ga. water. usgs. gov/edu/earthhowmuch. html

How much water is on Earth? …so there’s a lot of water on Earth. What of it? Well, since a great deal of that water is in motion, we can use it to generate power. That’s what! Water Power!!! http: //ga. water. usgs. gov/edu/earthhowmuch. html

Water Power vs. Hydropower is often used to refer to all types of water power but in this class, we will use these definitions: Water Power - general term for all power generated from moving water which includes hydro, wave and tidal power Hydropower - energy generation derived from the kinetic energy of continuously flowing water

History of Hydropower BC Used by Greeks to turn waterwheels for grinding wheat 14 AD Roman engineer Vitruvius credited with first written description of vertical water wheel 31 AD Chinese engineer Tu Shih invented a water-powered reciprocator for the casting of iron agricultural implements.

D with ption wheel History of Hydropower 31 AD Chinese engineer Tu Shih invented a water-powered reciprocator for the casting of iron agricultural implements. 1700’s Water power is being used extensively for grinding and pumping 1824 French engineer Claude Bourdin coins the word, turbine

0’s s being ely for pumping History of Hydropower 1824 French engineer Claude Bourdin coins the word, turbine 1880 1882 Lester Pelton obtains patent for Pelton wheel; 1 st industrial use of hydroelectric power in Michigan; 1 st hydroelectric powerplant on Fox River in Appleton, Wisconsin

What’s Coming Up? �Water Cycle �Hydroelectric Plants �Hydropower & Water Turbines �Impacts on Environment/Society