The Water Planet Investigation 7, part 1 TG- P.223-233

Quick Write Using the paper provided, write down everything that you know to answer the following question. You may use words and pictures. : What is the water cycle? TG- P.234 TG -Assessment P.437

Investigation 7: The Water Cycle Title the next page in your ISN…. Investigation 7: The Water Cycle

The Water Planet Looking at the globe: Suppose that you are a visitor from another planet approaching the Pacific Ocean. How would you describe the planet? TG-P.234

The Water Planet You may have heard of the Earth as being described as a water planet. If your first view of the Earth were the Pacific Ocean, it certainly seem so. Of all the planets in the Solar System, Earth is the only one with vast oceans of water. 70% of Earth’s surface is covered in water TG-P.234

Earth’s Water Inventory Not all of Earth’s water is located in the oceans. Where are other locations for water on Earth? TG-P.234

Earth’s Water Inventory Rivers and Streams H Lakes and Ponds Y Atmosphere D Aquifers or Ground water R Glaciers, Snow and other Ice O Soil Moisture S Water in Living Things P Bottled Water for drinking H Oceans E R E TG-P.234

Earth’s Fresh Water Only a small portion of earth’s water is fresh water. What do we mean by fresh water? TG-P.234

Earth’s Fresh Water Fresh water contains no salt Most of Earth’s fresh water is locked up in as ice in glaciers and in polar ice caps TG-P.234

Earth’s Fresh Water When you add the amount of ocean water and ice together, you find that 99.4% of Earth’s water is inaccessible to humans How much of Earth’s water is potentially available? 100 - 99.4 = ??? 0.6% of Earth’s water is available for human use TG-P.234

Earth’s Fresh Water Look at the handout of Earth’s Water Distribution. In what form is water found in the atmosphere? Water vapor, ice, snow, hail, sleet, rain In what form is water found in glaciers? Ice, solid water TG-P.234 Student Resource Book P.45

Earth’s Fresh Water What is groundwater? Water that is found underground in spaces between rock particles, in cracks, and in other solid earth deposits TG-P.235

Earth’s Fresh Water In what form is water found under the ground or as groundwater? Groundwater is mostly liquid, but some water might exist as ice if the ground is cold, or as water vapor in spaces between rocks and in soil TG-P.235

Earth’s Fresh Water Other than glaciers and icecaps, where else might fresh water be located? Freshwater is also found in lakes, rivers, ponds groundwater, atmosphere and soil TG-P.235

Earth’s Water Distribution 1. Fill a 1- liter (1000ml) beaker with water - this is all of Earth’s water 2. Dip quickly and dry a pipette - the trace amount of water represents all of the water found in rivers TG-P.235

Earth’s Water Distribution 3. Put a little water in a pipette Squeeze one drop into a cylinder - The single drop represents all the water in Earth’s atmosphere Squeeze 2 drops into a cylinder - these drops represent the water in the Earth’s soil TG-P.235

Earth’s Water Distribution Squeeze three more drops in cylinder - These drops represent all the Earth’s water in lakes and ponds Squeeze three more drops into the cylinder - these drops represent the water in all of Earth’s inland saltwater seas TG-P.235

Earth’s Water Distribution Measure 6 ml of water in a syringe, add to the graduated cylinder - this 6 ml of water represents groundwater, the water in aquifers under the ground Measure 21 ml of water - this represents water frozen as glaciers and icecaps TG-P.236

Earth’s Water Distribution The volume in the cylinder is ~28 ml How much water is left in the container? 1000 ml - 28 ml = 972 ml The water left in the container represents the water in Earth’s oceans TG-P.236

Brain Pop Video brainpop.com Username: legends Password: pop

Water Cycle Game I want you to imagine that you are a water molecule about to enter the Water Cycle. Each group of 3-4 represents 1 molecule Look at the water posters TG-P.236

Water Cycle Game Each group will begin in one of the nine locations: animal atmosphere glacier groundwater lake ocean plant river soil TG-P.236

Water Cycle Game Open the Lab Notebook to page 43 Jobs The Roller- rolls dice The Navigator - reads directions The Scribe - records information TG-P.236 Student Lab Notebooks - p.43

Water Cycle Game Rules Go to assigned Water - Location Poster Record location, Roll a Die. b. Find that number on the poster to determine where to move next. c. Move, Record Information and roll the die again until you have rolled 10 times TG-P.236 Student Lab Notebooks - p.43 Special Teacher Masters p.356-364

Water Cycle Game Results Project Transparency 24 Water Cycle Game Tally, record the total number of visits that each group had to each location Record grand totals for section 2 TG-P.236 Student Lab Notebooks - p.43 Special Teacher Masters p.356-364 Transparency #24- P.344

Discuss Water Cycle The results of the water cycle game present a picture of water molecules traveling through the environment in ways that are different from the picture of the water cycle that we are familiar with. TG- P.238

Discuss Water Cycle The water cycle shows water rising from the ocean and forming clouds, which move over the mountains and drop precipitation. The water flows to the sea and the cycle is complete. TG- P.238

Discuss Water Cycle How is what you learned from the Water- Cycle Game different from this “classic” water cycle? TG- P.238

Discuss Water Cycle In reality, some water does follow the classic cycle, but there are lots of other cycles too. We saw water escaping from plants, condensing as dew, and going into soil, where it could be used again by plants. TG- P.238

Discuss Water Cycle Water vapor rising from the ocean condenses and precipitates right back into the ocean, never reaching land. Water gets “stuck” in the ocean for a long time, never entering the water cycle at all. TG- P.238

Discuss Water Cycle The water cycle is VERY complex. The water Cycle is any movement of water that follows a path that moves water around Earth Movement can take place between atmosphere and land, land and sea, and as a solid, liquid, or water vapor (gas) TG- P.238

Discuss Water Cycle Movement can take place between: Atmosphere and Land Land and Sea As a Solid Liquid or Water Vapor TG- P.238

Water Cycle Song http://www.youtube.com/watch?v=T05djitkEFI

Water Works Video Why is water significant to those who live on Earth? All living things need water to survive. We use it for drinking, irrigation, recreation, transportation and electric power generation and we manage it for flood control TG- P.238 Video- Water Works: Careers in Hydrology

Water Works Video What does the word Hydrology mean? Hydrology is the study of water as it moves through the environment. It is understanding how water works and how it affects us TG- P.238 Video- Water Works: Careers in Hydrology

Water Works Video What are the key elements in predicting a flood? Knowledge of the amount of precipitation and runoff; the speed of the water; how much water to expect; the ability to follow water downstream TG- P.238 Video- Water Works: Careers in Hydrology

Water Works Video What might cause precipitation to run off into a river instead of soaking in? Soil type, smooth or rough surface, amount of vegetation, steepness of slope TG- P.238 Video- Water Works: Careers in Hydrology

Water Works Video What do hydrologists do? Study the water cycle, gather data on precipitation, predict the speed of runoff and in rivers, predict river levels and floods and help emergency managers understand and anticipate hazardous conditions TG- P.238 Video- Water Works: Careers in Hydrology

Water Works Video What parts of the water cycle were shown on the video? The amount available for use; precipitation, runoff, absorption by soil, vegetation and evaporation TG- P.238 Video- Water Works: Careers in Hydrology

Reading Read Earth: The Water Planet Answer Questions TG- 239 Student Resource Book: P.45-47