2nd Grade. Earth's Water. Slide 1 / 111 Slide 2 / 111. Slide 3 / 111. Slide 4 / 111. Slide 5 (Answer) / 111. Slide 5 / 111. Role of Water on Earth

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1 Slide 1 / 111 Slide 2 / 111 2nd Grade Role of Water on Earth Slide 3 / 111 Slide 4 / 111 Table of Contents: The Role of Water on Earth Earth's Water The Use of Maps Click on the topic to go to that section Earth's Water Water's Changing Forms The Water Cycle Unit Review Return to Table of Contents Slide 5 / 111 Earth's Water Slide 5 () / 111 Earth's Water Can you think of some examples of where water is found on Earth's surface? Can you think of some examples of where water is found on Earth's surface? Teacher Notes Clicking on the globe will take you to Flash Earth where you can zoom in on different bodies of water. On the left side of the screen click on Bing Maps (labels) to find the proper names of bodies of water and their locations. [This object is a teacher notes pull tab]

2 Slide 6 / 111 Earth's Water All living things depend on water to survive. Look at the organisms below and describe why they need on water. Slide 7 / 111 Earth's Water Demo How much of Earth's water can actually be used? Find out in this activity! On Earth's surface, water can be found in: oceans lakes ponds rivers glaciers Slide 8 / 111 Earth's Water Slide 9 / 111 Oceans An ocean is a large body of salt water that covers most of Earth's surface. Earth has five oceans but they are not actually separate. They are all connected! Together these are called the World Ocean. Slide 10 / 111 Oceans Can you see how all the oceans are connected? Arctic Ocean Arctic Ocean Slide 11 / 111 Basins Can you cup your hands together, as if you are holding something? Pacific Ocean Atlantic Ocean Indian Ocean Pacific Ocean Southern Ocean You live closest to which ocean? When you do this, your hands form a basin. Many bodies of water form in basins made from the Earth.

3 Lakes are large bodies of still water that form in a basin. Most lakes have freshwater in them, but a few have salt water. Slide 12 / 111 Lakes Slide 13 / 111 Lakes Many lakes are man-made. They are called reservoirs. Some cities use reservoirs to store water for later use. This is Gibson Reservoir in Montana. A pond is similar to a lake except that it is smaller and shallower. Slide 14 / 111 Ponds Slide 15 / 111 Ponds Ponds can occur naturally or can be man-made. Some animals, like beavers, also make ponds. This beaver dam has created a pond in the waterway. Slide 16 / 111 Rivers A river is a moving stream of freshwater. Rivers flow into oceans, lakes, ponds, or even other rivers. How is a river different from a lake or pond? Slide 17 / 111 The Mississippi River Can you find it on the map? The Mississippi River is one of the largest rivers in the United States. It flows for about 2,500 miles. What other large rivers do you see on this map?

4 Slide 18 / 111 Where is Earth's Water? Slide 19 / 111 Review: Types of Bodies of Water All of the photographs below show different types of bodies of water. What is each body of water called? Click any photograph to find out. Most of Earth's water is in the oceans. Only a very small part is freshwater. Freshwater exists in glaciers, lakes and rivers. It is even in the clouds! Slide 20 / 111 This is a lake. It is Lake Bled in Slovenia. This is a pond. How could you tell? Slide 21 / 111 This is a river. It is the Gambia river in Africa. This is an ocean. This is the Pacific ocean off the coast of California. Land Versus Water Activity Is Earth covered by more land or more water? Catch the globe to find out! 1 The ocean is salty. Yes No Slide 21 () / 111 Slide 22 / The ocean is salty. 2 Most of the Earth is covered by Yes A land. No YES B ocean. C freshwater.

5 Slide 22 () / Most of the Earth is covered by 3 The water in a river is still. Slide 23 / 111 A land. B ocean. C freshwater. B 3 The water in a river is still. Slide 23 () / 111 Slide 24 / Which body of water is largest? A pond B lake C ocean Slide 24 () / Which body of water is largest? Slide 25 / A is smaller and shallower than a lake. A pond B lake C ocean C A river B ocean C pond

6 Slide 25 () / A is smaller and shallower than a lake. Slide 26 / Which of the following is fresh water? (More than one answer may be correct.) A river B ocean C pond C A pond B lake C ocean D river Slide 26 () / 111 Slide 27 / Which of the following is fresh water? (More than one answer may be correct.) A pond B lake C ocean D river A, B, and D Slide 28 / 111 Slide 29 / 111 Bodies of Water Demo and Water Venn Diagram Activity What are the differences and similarities between oceans, rivers, lakes and ponds? This demo and activity will show you.

7 Slide 30 / 111 Slide 31 / 111 The Use of Maps The Use of Maps Maps show us information about a specific area. Look at this map of the United States. What do the different colors mean? How many different types of bodies of water can you find? Return to Table of Contents Slide 32 / 111 The Use of Maps Maps can show the shapes and different kinds of land in an area, including different bodies of water. Some maps show the depths of landforms. This is a map of a South Pole glacier. Slide 33 / 111 The Use of Maps What kinds of formations does this map show? How deep is this glacier? Slide 34 / 111 The Use of Maps Slide 35 / 111 The Use of Maps This is a 3-D map of the Atlantic Ocean. This map shows us a model of the land that lies beneath the ocean's surface. How would you describe the ocean floor? This is a topographic map of the United Kingdom. It shows the elevation of the land, with bodies of water in blue. What part of the United Kingdom has the highest elevation?

8 Slide 36 / 111 Slide 36 () / Maps can show 7 Maps can show A land forms. B bodies of water. C elevation. D All of the above. A land forms. B bodies of water. C elevation. D All of the above. D Slide 37 / In maps, bodies of water are always shown in the color Slide 37 () / In maps, bodies of water are always shown in the color A blue. B green. A blue. B green. C brown. D yellow. C brown. D yellow. A Slide 38 / 111 Slide 39 / 111 Landforms and Maps Activity What types of landforms can you see on a map? In this activity, you will make your own map. Be creative! Source:

9 Slide 40 / 111 Slide 41 / 111 Slide 42 / 111 Slide 43 / 111 Water's Changing Forms Return to Table of Contents Weather is a short term description of the conditions in an area. Slide 44 / 111 Weather and Climate Slide 45 / 111 Water as a Solid Different parts of the world have different climates. In some areas it is cold and snowy most of the time. In many colder climates, water exists as a solid (ice). Climate is the average weather conditions for an area. Antarctica's climate is the coldest on Earth.

10 Slide 46 / 111 Water as a Solid Slide 47 / 111 Glaciers Ice is the world's largest supply of freshwater. It covers about 3 percent of Earth's surface including most of Antarctica and Greenland. A glacier is formed when new snow falls on old snow and all of the layers are pressed together. Glaciers make up a lot of the Earth's freshwater. Slide 48 / 111 Why do many colder climates have a lot of ice? Ice forms when temperatures fall below 32 degrees Fahrenheit or 0 degrees Celsius. Think about this. Where do you keep ice at your house? Click the ice to find out. They have to be put in a place that is really cold, like a freezer. Remember, ice freezes at 32 F (0 C). Slide 49 / 111 Water as a Liquid In parts of the world where the climate is warm and rainy, water exists as a liquid. This is a photo of a rainforest in Ecuador. It is hot and rainy most of the time. Slide 50 / 111 Where on Earth can you find liquid water? Areas that are close to the equator have hot temperatures all year. Slide 51 / 111 Changing States of Water There are many parts of the world where the climate changes depending on the season. In these areas, it is the changing temperature during the different seasons that determines whether water is a liquid or a solid. In these hot climates, most of the water exists as a liquid. The green areas in this map have variable seasons.

11 Slide 52 / 111 Changing States of Water During spring at this lake, temperatures reach above 32 F (0 C) and the water becomes a liquid. During winter, temperatures fall below freezing and the lake turns to ice. Notice the different forms of water in this lake. Which photo has temperatures above 32 F? Slide 53 / 111 Changing States of Water This is a waterfall at Minnehaha Falls in Minneapolis, Minnesota. Each picture was taken during a different season. Can you guess which photo is each season? Slide 54 / 111 States of Water Activity How does water change into different states? Find out in this activity! Slide 55 / When you listen to the news to see the temperature for the day, you are listening to the A weather. B climate. Slide 55 () / When you listen to the news to see the temperature for the day, you are listening to the Slide 56 / In what areas does water exist as a solid? A Places that are very cold. A weather. B climate. A B Places that are very warm.

12 Slide 56 () / 111 Slide 57 / In what areas does water exist as a solid? 11 Earth's glaciers are beginning to melt. Why might this be happening? A Places that are very cold. B Places that are very warm. A A Earth is getting warmer. B Earth is getting colder. Slide 57 () / 111 Slide 58 / Earth's glaciers are beginning to melt. Why might this be happening? 12 In what areas could you walk on water? (There can be more than one answer.) A Earth is getting warmer. B Earth is getting colder. A A The Arctic B A lake in a hot climate C A stream in the cold winter D A mountain glacier Slide 58 () / In what areas could you walk on water? (There can be more than one answer.) Slide 59 / Where in the world can water exist as a liquid all year? A The Arctic B A lake in a hot climate C A stream in the cold winter D A mountain glacier A C D A Antarctica B Along the equator C the northern United States

13 Slide 59 () / Where in the world can water exist as a liquid all year? Slide 60 / The solid form of water is called. A Antarctica B Along the equator C the northern United States B A ice B liquid C water Slide 60 () / The solid form of water is called. A ice Slide 61 / Where on Earth would you find bodies of water that change from a liquid to a solid during the year? B liquid C water A A Places that have changing seasons B Near Antarctica or the Arctic C Near the Equator Slide 61 () / Where on Earth would you find bodies of water that change from a liquid to a solid during the year? A Places that have changing seasons A B Near Antarctica or the Arctic Slide 62 / To turn ice into liquid water, you must: A leave it in the freezer. B make it colder. C add heat. C Near the Equator

14 Slide 62 () / 111 Slide 63 / To turn ice into liquid water, you must: A leave it in the freezer. B make it colder. C add heat. C Slide 64 / 111 Slide 65 / 111 Slide 66 / 111 Slide 67 / 111

15 Slide 68 / 111 The Water Cycle Slide 69 / 111 The Water Cycle Earth has a limited amount of water and that water keeps going around and around in different forms. This is called the water cycle. Return to Table of Contents Click the image to learn more about the water cycle. What makes a A decrease in liquid change temperature. into a solid? What makes a An increase in liquid change temperature. into a gas? Slide 70 / 111 The Water Cycle Remember back to changing states of matter. Talk with your group about the following questions then click on each for an answer: What makes a An increase in solid change temperature. into a liquid? What makes a A decrease in gas change temperature. into a liquid? Slide 71 / 111 The Water Cycle The sun drives the water cycle. The heat of the sun makes the water molecules speed up. When this happens, water changes from one state to another. How will sunshine affect the different states of water in this picture? Slide 72 / 111 The Water Cycle Evaporation occurs when liquid water changes into water vapor or gas. Slide 73 / 111 The Water Cycle Transpiration is a special kind of evaporation which happens in plants. Follow the steps below (start at the roots!) (3) water exits the leaves and is evaporated back into the air (2) water moves up through the plant's stem to the leaves Evaporation (1) water is taken up by a plant's roots

16 Slide 74 / 111 The Water Cycle When evaporated water (water vapor) reaches the atmosphere, it cools. The water molecules slow down and change back into liquid water. This process creates the clouds. Condensation Slide 75 / 111 The Water Cycle Condensation is when water vapor changes into liquid water. Slide 76 / 111 The Water Cycle When the clouds become too heavy, they release the water molecules back to the Earth. Temperature and the amount of moisture in the air determine what kind of precipitation falls. Slide 77 / 111 The Water Cycle Precipitation is when water in the form of sleet, snow, rain or hail returns to Earth. Sleet Snow Precipitation Rain Hail Slide 78 / 111 The Water Cycle Runoff and groundwater collect in Earth's oceans, lakes, rivers and ponds. The cycle begins again. Slide 79 / 111 Water Cycle Activity In this activity, you will watch the water cycle happen in your own classroom! Be observant! Click on the image to watch a video about the water cycle.

17 Slide 80 / What drives the water cycle? Slide 80 () / What drives the water cycle? A Transpiration A Transpiration B Cloud formation C The sun B Cloud formation C The sun C Slide 81 / When the sun heats up water, the molecules slow down. Slide 81 () / When the sun heats up water, the molecules slow down. Slide 82 / During evaporation, water changes from a liquid to a Slide 82 () / During evaporation, water changes from a liquid to a A solid. A solid. B liquid. C gas. B liquid. C gas. C

18 Slide 83 / 111 Slide 83 () / Transpiration is when 20 Transpiration is when A water evaporates from plants. A water evaporates from plants. B water vapor cools to form clouds. B water vapor cools to form clouds. A Slide 84 / Clouds form when water condenses onto dust particles. Slide 84 () / Clouds form when water condenses onto dust particles. Slide 85 / Sleet, snow, rain and hail are examples of Slide 85 () / Sleet, snow, rain and hail are examples of A evaporation. A evaporation. B precipitation. C condensation. B precipitation. C condensation. B

19 Slide 86 / Which of the following shows the correct order of the water cycle? Slide 86 () / Which of the following shows the correct order of the water cycle? A evaporation, precipitation, condensation B condensation, evaporation, precipitation C evaporation, condensation, precipitation A evaporation, precipitation, condensation B condensation, evaporation, precipitation C C evaporation, condensation, precipitation Slide 87 / 111 Slide 88 / 111 Slide 89 / 111 Slide 90 / 111

20 Slide 91 / 111 Slide 92 / Most of Earth is covered in land. Unit Review Return to Table of Contents Slide 92 () / Most of Earth is covered in land. Slide 93 / Most of the water on Earth is A salt water. B freshwater. C glaciers. Slide 93 () / Most of the water on Earth is Slide 94 / Oceans are large bodies of water. A salt water. A fresh B freshwater. C glaciers. A B salt

21 Slide 94 () / Oceans are large bodies of water. Slide 95 / A lake is a large body of still water. A fresh B salt B Slide 95 () / A lake is a large body of still water. Slide 96 / A river is different from a lake because it is A salt water. B still water. C moving water. Slide 96 () / A river is different from a lake because it is Slide 97 / Ponds are bigger and deeper than lakes. A salt water. B still water. C moving water. C

22 Slide 97 () / Ponds are bigger and deeper than lakes. Slide 98 / "Today will be cloudy with a high of 35." This is an example of A climate. B weather. Slide 98 () / "Today will be cloudy with a high of 35." This is an example of Slide 99 / Climate is the average weather of an area. A climate. B weather. B Slide 99 () / Climate is the average weather of an area. Slide 100 / Glaciers exist in areas where the temperature is A below 32 degrees F. B above 32 degrees F.

23 Slide 100 () / Glaciers exist in areas where the temperature is Slide 101 / Uganda is a country in Africa that is on the equator. Water in Uganda is A below 32 degrees F. A always solid. B above 32 degrees F. A B always liquid. C sometims liquid and sometimes solid. Slide 101 () / Uganda is a country in Africa that is on the equator. Water in Uganda is Slide 102 / Water would change between solid and liquid in an area where the temperature A always solid. B always liquid. C sometims liquid and sometimes solid. B A changes between hot and cold. B is always cold. C is always hot. Slide 102 () / Water would change between solid and liquid in an area where the temperature 35 Solid water is called ice. Slide 103 / 111 A changes between hot and cold. B is always cold. C is always hot. A

24 Slide 103 () / 111 Slide 104 / Solid water is called ice. 36 The sun causes A condensation. B precipitation. C evaporation. 36 The sun causes Slide 104 () / 111 Slide 105 / When molecules heat up, they move faster. A condensation. B precipitation. C evaporation. C Slide 105 () / When molecules heat up, they move faster. Slide 106 / Precipitation occurs when liquid water in the sky falls to the ground.

25 Slide 106 () / Precipitation occurs when liquid water in the sky falls to the ground. Slide 107 / When water vapor changes to liquid in the sky, it is called A evaporation. B condensation. C precipitation. Slide 107 () / When water vapor changes to liquid in the sky, it is called Slide 108 / After water falls to the ground, it returns to the ocean via groundwater. A evaporation. B condensation. C precipitation. B Slide 108 () / After water falls to the ground, it returns to the ocean via groundwater. Slide 109 / Which of the options lists the water cycle in the correct order? A The sun, condensation, evaporation, precipitation, groundwater. B Evaporation, condensation, the sun, precipitation, groundwater. C The sun, evaporation, condensation, precipitation, groundwater.

26 Slide 109 () / 111 Slide 110 / Which of the options lists the water cycle in the correct order? A The sun, condensation, evaporation, precipitation, groundwater. B Evaporation, condensation, the sun, precipitation, groundwater. C C The sun, evaporation, condensation, precipitation, groundwater. Slide 111 / 111