- Slides: 24
Science Starter • Take the green paper at the door. • Supplies Needed: – Clipboard – Pen or Pencil – Purple Vocabulary Sheet
Watershed stations and vocabulary review: • Stations 1 -9 will be answered on the green paper. • Station 10—Making a watershed • Station 11—Vocabulary Review with Flashcards • Station 12—Succession Review (at completion of all other stations) • Rotate at your own pace • Only 3 people per station maximum • Green paper is due at the end of class!
Water Cycle- Fill in your diagram Step 1 - Sun heats water.
Water Cycle- Fill in your diagram Step 2 - Water evaporates as water vapor into the atmosphere.
Water Cycle- Fill in your diagram Step 3 - Water condensates into clouds.
Water Cycle- Fill in your diagram Step 4 - Clouds release water as precipitation- rain, snow, hail
Water Cycle- Fill in your diagram Step 5 - Water runs along the ground or soaks into the soil
What is a watershed? • All the water underground above ground that flows into the same place (river, lake) • Can be large, or small
What is a watershed? • 2, 110 watersheds in the US • Also called a drainage basin
What is surface water? • All surface water drains into a major body of water- lake or river • Eventually most water flows into the ocean
What is a runoff? • Water enters the watershed through precipitation • Most precipitation falls on land becomes runoff • Runoff is water that does not soak into the soil but “runs” into lakes, river, etc
What is groundwater? • Water that does soak into the soil is called ground water. • As water soaks into the ground it passes through layers of porous rock.
What is groundwater? • Rock that is porous allows water to flow through it. • Soil can have different levels of porousness. • This flow of water through the soil is called percolation.
What is percolation? • Some soil allows a lot of water to flow through and some does not let hardly any • Water sinks down until it reaches a layer of rock or clay that it cannot pass through
What is percolation? • Water that collects on top of that layer is called groundwater. • The layer of rock that is saturated (filled) with water is called an aquifer.
What is the water table? • The very top of an aquifer is called the water table. • The water table can be on the surface, close to the surface or hundreds of feet down.
What is a watershed divide? • Surface water is divided by watershed divides. • A watershed divide is a high point on the land that divides one watershed from another. • Rivers are divided into tributaries- smaller streams that connect off the larger river.
Watershed- Fill in your diagram • Step 1 - Precipitation adds water
Watershed- Fill in your diagram • Step 2 - Water runs down the watershed divide.
Watershed- Fill in your diagram • Step 3 - Water runs into tributaries.
Watershed- Fill in your diagram • Step 4 - Water soaks into the groundcalled percolation.
Watershed- Fill in your diagram • Step 5 - Water settles into as groundwater in an aquifer.
Notes & Diagrams - Tape or glue the notes and diagrams to the RIGHT side of your notebook!
Watershed Worksheet 1 - Read the information. 2 - Answer the questions. 3 - Label the diagram. 4 - Draw the well. 5 - Turn in completed work. THIS IS DUE AT THE BELL!