The Water Planet Investigation 7, part 1

Quick Write  In your Interactive Notebook, write down everything that you know to answer the following question:  What is the water cycle?

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

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. 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. 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 70% of Earth’s surface is covered in water

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

Earth’s Water Inventory Rivers and Streams Rivers and Streams Lakes and Ponds Lakes and Ponds Atmosphere Atmosphere Aquifers or Ground water Aquifers or Ground water Glaciers, Snow and other Ice Glaciers, Snow and other Ice Soil Moisture Soil Moisture Water in Living Things Water in Living Things Bottled Water for drinking Bottled Water for drinking

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

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

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? How much of Earth’s water is potentially available? = ???  0.6% of Earth’s water is available for human use

Earth’s Fresh Water  Turn to page 45 in the Weather and Water Resource Book  In what form is water found in the atmosphere? Water vapor, ice, snow, hail, sleet, rain Water vapor, ice, snow, hail, sleet, rain In what form is water found in glaciers? Ice, solid water

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

Earth’s Fresh Water  In what form is water found under the ground or as groundwater?  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

Earth’s Fresh Water  Other than glaciers and icecaps, where else might fresh water be located?  Lakes, rivers, ponds groundwater, atmosphere and soil

Earth’s Water Distribution  Can I get a few volunteers?  1. Fill a 1- liter (1000ml) beaker with water - this is all of Earth’s Fresh water 2. Dip quickly and dry a pipette - the trace amount of water represents all of the water found in rivers

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

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

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

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

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

Water Cycle Game Each group will begin in one of the nine locations: animalatmosphere glaciergroundwater lake ocean plant river soil

Water Cycle Game Use Lab page 43. Jobs Jobs The Roller- rolls dice The Navigator - reads directions The Scribe - records information

Water Cycle Game Rules a. 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

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.

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.

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.

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

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.

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.

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

Discuss Water Cycle Movement can take place between: Atmosphere and Land Atmosphere and Land Land and Sea Land and Sea As a Solid As a Solid Liquid or Water Vapor Liquid or Water Vapor

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

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 woks and how it affects us

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

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

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

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

Reading  Read Earth: The Water Planet.  Answer Questions.