1. Water and the Atmosphere - Chapter 1 Lesson 1
Water on Earth
Water and the Atmosphere - Chapter 1 Lesson 1

2. Objectives State how people and other living things use water.
Describe how Earth’s water is distributed.
Explain how Earth’s water moves through the water cycle.
We are covering NGSS:
MS-ESS2-2 Construct An Explanation Based On Evidence For How Geoscience Processes Have Changed Earth’s Surface At Varying Time And Spatial Scales.
MS-ESS2-4 Develop A Model To Describe The Cycling Of Water Through Earth’s Systems By Energy From The Sun And The Force Of Gravity.
MS-ESS3-1 Construct A Scientific Explanation Based On Evidence For How The Uneven Distributions Of Earth’s Mineral, Energy, And Groundwater Resources Are The Result Of Past And Current Geoscience Processes.
MS-ESS3-3 Apply Scientific Principles To Design A Method For Monitoring And Minimizing A Human Impact On The Environment.*

3. What questions can you think of while looking at this picture?

4. How Does Fresh Water Cycle On Earth?
What are the bodies of water in or near your town or city?
ommunity/program/6aa8ae87-05c0- 3cee-bb ea0e9d2f/16/tier/b b-3ab2-a f6d6432dae/16/lesson/fa910b11- a36d-3c34-94b2- b2f7a8ceb7ef/16/content/3f59dd8f- 89a3-3b73-a b73bb20/17
Make a list of questions that the video raises.

6. How Much Water Do You Use?
You take a shower. You brush your teeth. You take a big drink after soccer practice.
All day long, you need water!
How much water do you use in a day? How much do you think your whole state uses?
The graph shows the water used per person in the ten states of the United States with the largest populations.
The data include the water used for all purposes, including farming, industry, and electric power.

7. How Much Water Do You Use?
In which state is the water use per person greatest? In which state is it least?
Greatest: California
Least: New York
What do you think might explain the difference in water use between states?
States that have more farms use more water

8. The Water Cycle
The water cycle is a continuous process in which water moves through the environment.
The sun is the source of energy that drives the water cycle.
The total amount of water of Earth has remained fairly constant for millions of years.
A water molecule in the Rio Grande may end up as snow on the Alps in Italy.
This recycling process ensures that, worldwide, amounts of evaporation and precipitation are equal over time.

9. The Water Cycle What drives the water cycle?
Water vapor given off by water, plants, and animals is called
A.precipitation.
B.condensation.
C.evaporation.
D.runoff.
Which of the following is precipitation?
A.hail
B.snow
C.rain
D.all of the above
What drives the water cycle?
A.oceans
B.clouds
C.sun’s energy
D.precipitation

10. Water Cycle in your Hand
Observe What water cycle process can you observe here?
Challenge What other process or processes can you infer are also taking place?
Give an example of a water cycle process you have seen.

11. Why Is Water Important?
 All living things need water in order to carry out their body processes.
Water allows organisms to break down food, grow, reproduce, and get and use materials they need form their environments.
Plants and other organisms that make their own food also need water.
Algae and plants use water, along with carbon dioxide and energy from the sun, to make their own food in a process called photosynthesis.

12. Why Is Water Important?
In addition, many living things use water for shelter.
Water provides habitats for many living things.
A habitat is the place where an organism lives and obtains all the things it needs to survive.
Some organisms cannot live out of water.
What are some ways that water helps living organisms? Name as many ways as you can.

14. Where is Water Found?
Most of Earth’s surface water—roughly 97 percent—is salt water found in oceans.
Only 3 percent is fresh water. Of that 3 percent, about two thirds is frozen in huge masses of ice near the North and South Poles.
Massive ice sheets cover most of Greenland and Antarctica.
Most of the rest of the fresh water is underground.
Water that fills the cracks and spaces in underground soil and in rock layers is called groundwater.
Far more fresh water is located underground than in all of Earth’s rivers and lakes.

16. Where is Water Found?

17. What Is the Water Cycle?
The water cycle is the continuous process by which water moves from Earth’s surface to the atmosphere and back, driven by gravity and energy from the sun.
In the water cycle, water moves between land, living things, bodies of water on Earth’s surface, and the atmosphere.

18. What Is the Water Cycle?
Processes included in the water cycle are evaporation, the process of molecules at the surface of a liquid absorbing enough energy to change to a gaseous state, and transpiration, the process of water taken in by plants being given off through the leaves as water vapor.

19. What Is the Water Cycle?
Water vapor in the air cools and condenses into liquid water, which eventually forms clouds.
When the water droplets become heavy, they fall back to Earth as rain, snow, hail, or sleet, all of which are forms of precipitation.

20. What Is the Water Cycle?
The letter e in evaporation comes from the Latin word ex, meaning "away." Vapor is Latin for "water vapor."
What do you predict that evaporation means?