Water, Water Everywhere: The Three States of Water By Julie Traylor

Teacher Information  Standards: S4E3. Students will differentiate between the states of water and how they relate to the water cycle and weather. a. Demonstrate how water changes states from solid (ice) to liquid (water) to gas (water vapor/steam) and changes from gas to liquid to solid. b. Identify the temperatures at which water becomes a solid and at which water becomes a gas.

Kiddo Information  You will be able to explain how water changes states (solid, liquid, gas) depending on different temperatures. You will also learn at what temperatures water freezes and boils using Fahrenheit and Celsius to measure. Later you’ll learn about how the states of water relate to the water cycle and how the water cycle affects weather! How cool!

What Do YOU Know about H2O (water) What Do YOU Know about H2O (water)? Take one minute to talk to your neighbor. We’ll then brainstorm as a class. GO!

Let’s Build that Background Knowledge We drink the SAME water the dinosaurs drank! Ew! About 70% of Earth is covered with water 97% of the water that covers Earth is salt water-look at a globe and you’ll see why 2% of water on Earth is found in glaciers that are located at the North and South Poles Less than 1% is fresh water found in lakes, rivers, streams, underground Mmm… water…

What is Water? Water is a molecule made up of 2 hydrogen atoms and 1 oxygen atom. Don’t worry about this. You’ll learn this in middle and high school chemistry.  Let's Have Moby Help Us

Solid Solids do not take the shape of containers. They hold their shape. Ice and snow are examples of water in a solid state. Solids can change though…

Liquid Liquids take the shape of the containers they are in. http://viewpure.com/ZTB-Ty_k9vY?start=0&end=0

Gas Water vapor, gas, steam all mean the same thing. Water vapor is invisible and it’s all around us. http://www.nps.gov/av/imr/avElement/yell-MinuteTwofer.mp4

Changes in the States of Water Have you ever looked up in the sky and wondered how clouds are made? Have you wondered why and how water freezes, melts and boils? Adding and subtracting heat can change water from one state to another. It’s SCIENCE, PEOPLE!!!

Solid Liquid What happens when you take an ice cube and put it in the sun or hold it in your hands? It melts! Why does the ice cube melt? Well, there’s a tricky answer. Again, you’ll learn about this in high school. Basically, when you add heat to solid water, it melts.

Liquid Gas How does liquid water turn into water vapor? First, the water needs to get hot…really hot! Water needs to boil! We measure temperature using Fahrenheit and Celsius. Boiling Point Fahrenheit 212° F Celsius 100° C http://viewpure.com/qJRxYBIfZlE?start=0&end=0

Liquid Solid Let’s say you leave a bucket of water out overnight on a frigid winter night. You wake up to find a block of ice. What happened? The water went through a physical change from a liquid to a solid because heat was subtracted. Freezing Point Fahrenheit 32° F Celsius 0° C

Great Visuals

For the sake of science, explore the sites below!  http://www.discoverwater.org/ http://www.planet-science.com/categories/under-11s/chemistry-chaos/2012/10/is-water-a-liquid,-solid-gas.aspx