Access Prior Knowledge Lesson 3: What is the water cycle? Opening Activity Open Science textbook to page 208. Open Science folder to review vocabulary words and outline for the chapter. Open Science journal and answer the following questions: 1. How are erosion and weathering similar? Re view Content Cards and Q-Cards in bin, sharing with partners quizzing each other quietly. Log in to clickers using student ID number. Be ready to review home learning when timer goes off. Don't forget to write your home learning in your agenda page 68A.

1Water vapor is water in the form of invisible gas. Yes No Do you agree with the statement?

2Water vapor becomes liquid during condensation. Yes No Do you agree with the statement?

3The air temperature does not affect the steps in the water cycle. Yes No Do you agree with the statement?

4When ice changes into water vapor it must melt first. Yes No Do you agree with the statement?

Water in the Air Water is always in the air as a gas called water vapor, which is invisible. There are also many gas particles in the air that are always moving, this movement against another object causes air pressure.

The Water Cycle Water is always moving on the Earth’s surface, underground and in the air as water vapor. The water cycle is the repeated moving of water through the environment in many forms. There are four steps to the water cycle: 1.Evaporation- changing liquid water to water vapor, when heated by sun. 2.Condensation- changing water vapor to liquid water droplets when temperatures cool forming clouds or morning dew. 3.Precipitation- water that falls from clouds as rain, snow, sleet (frozen raindrops) or hail. 4.Runoff- movement of water flowing downhill into rivers, lakes or oceans and takes the longest to happen. Frost occurs when water vapor freezes before becoming a liquid. Another path in the water cycle is sublimation which is when ice turns to water vapor without first melting. Third paragraph pg. 208

Many Paths of the Water Cycle Not all water stays in the water cycle because organisms make and use water for many things, like photosynthesis in plants. The distance from the ocean can affect the climate in an area. Energy from the sun keeps the water cycle going by causing most of the melting, evaporation and sublimation. Energy in the Water Cycle Water Cycle Last paragraph pg. 210

Evaportation Condensation Precipitaiton Runoff Matchquest Water Cycle

TextQuest Answer questions in your Science journal. 1. What takes the longest time to happen in the water cycle? 2. When does condensation happen? 3. How does evaporation happen? 4. Why does morning dew take place and in what part of the water cycle does it happen? 5. How does frost take place? Don't forget to write your home learning in your agenda page 68A.