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.

c. Investigate how clouds are formed.

d. Explain the water cycle (evaporation, condensation, and precipitation).

e. Investigate different forms of precipitation and sky conditions. (rain, snow, sleet, hail, clouds, and fog).




Hands-on Investigations

Cool It or Pool It (S4E3a) - This activity investigates if making water vapor colder can change its state from a gas to a liquid. http://portal.acs.org/portal/PublicWebSite/education/whatischemistry/scienceforkids/planetearth/water/CSTA_015085


How Do You Dew? (S4E3a,d) - The purpose of this activity is to provide students with a hands-on experience of seeing how the processes of condensation and evaporation occur. http://www.uen.org/Lessonplan/preview.cgi?LPid=11082


Resources

States of Matter - (S4E3a) This PhET interactive allows you to watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change While this interactive has advanced featured beyond 4th grade, use just the Solid, Liquid, Gas tab and select the water molecule to show the change of states as heat is added or removed.

http://phet.colorado.edu/en/simulation/states-of-matter


Changes in States - (S4E3b) This video demonstrates the temperatures that water becomes a solid and a gas. http://www.neok12.com/php/watch.php?v=zX4372644d6e7071506f5b77&t=States-of-Matter