The Water Cycle

Photo Prediction Look at each photo Predict what you believe each

photo represents Write your personal response to

these images in your reflection log

Share your thoughts with the members of your group and later with the group at large

ANTICIPATORY GUIDE Agree/Disagree1. The Earth has a limited amount of water.

2. The water you drink today is the same water that has been around since the beginning of the Earth.

3. Most of the Earth’s water exists in its oceans.

4. On a global scale, the amount of water evaporating is more than the amount of water delivered to the Earth as precipitation.

5. The water cycle begins in the ocean and keeps moving and later reenters the ocean.

FIND THE MEANING to sublimate is to …

a. bring under control

b. convert between the solid and the gaseous phases of matter, with no intermediate liquid stage

c. to give up or surrender

Ice and snow can sublimate directly into water vapor.

FIND THE MEANING to condense is…

a. to be patronizing or disdainful

b. to find legally guilty or unfit

c. to form liquid from a gas

The vapor rises into the air where cooler temperatures cause it to condense into clouds.

DIRECTED READING WITH NUMBERSThe Water Cycle

1. What did you read about the water cycle? (pg. 1)

2. Look at the visual representation of the water cycle. List the terms that may be unfamiliar or difficult for you to explain.

Components of the Water Cycle The U.S. Geological Survey (USGS) has

identified 16 components of the water cycle.

You will work in pairs and study one component of the water cycle and create a poster to share out with the class.

Your poster will include a – 1) definition– 2) how water changes or moves over time (from

one component to another)– 3) graphic representation and, – 4) three important facts

Example: Global Water DistributionDefinition: The world’s total water supply of about 332.6

million cubic miles of water represents the presence of the Earth’s water at a single point in time.

Changes Over Time:Due to global “warm spell,” the water levels of the seas have changed due to the melting of the ice caps and thereby affecting the distribution of water.

Graphic/Symbol/Drawing:

Other Important Facts:– Over 96% of the world’s water is saline– Fresh surface-water sources (rivers/lakes) constitute

0.0067% of total water, the source of most of the water people us everyday

Components of the Water Cycle1. Water storage in oceans (3-4)2. Evaporation (4-5)3. Sublimation (5-6)4. Evapotranspiration (6-7)5. Water in the atmosphere (7-8)6. Condensation (8-9)7. Precipitation (9-11)8. Water storage in ice and snow (11-12)9. Snowmelt runoff to streams (13-14)10. Surface runoff (14-15)11. Streamflow (15-16)12. Freshwater storage (16-17)13. Infiltration (17-18)14. Groundwater storage (19-20)15. Groundwater discharge (20-21)16. Springs (21-23)

Components of the Water Cycle Read your section quietly Discuss the section with your

partner Develop/Decide on the…

1. definition2. Physicals changes of water 3. graphic representation, symbol or drawing4. other important facts

Create your poste

ANTICIPATORY GUIDE Agree/Disagree

1. The earth has a limited amount of water. (Agree)

The earth has a limited amount of water. That water keeps going around and around and around and around and (well, you get the idea) in what we call the "Water Cycle".

ANTICIPATORY GUIDE Agree/Disagree

2. The water you drink today is the same water that has been around since the beginning of the Earth. (Agree)

The water in your glass may have fallen from the sky as rain just last week, but the water itself has been around pretty much as long as the earth has! When the first fish crawled out of the ocean onto the land, your glass of water was part of that ocean. When the Brontosaurus walked through lakes feeding on plants, your glass of water was part of those lakes. When kings and princesses, knights and squires took a drink from their wells, your glass of water was part of those wells.And you thought your parents were OLD!

ANTICIPATORY GUIDE Agree/Disagree

3. Most of the Earth’s water exists in its oceans. (Agree)

It is estimated that about 96.5% of the world’s water supply is stored in the oceans. The oceans supply approximately 90% of the evaporated water that goes into the water cycle.

ANTICIPATORY GUIDE Agree/Disagree

4. On a global scale, the amount of water evaporating is more than the amount of water delivered to the Earth as precipitation. (Disagree)

Actually, on a global scale, the amount of water evaporating is about the same as the amount of water delivered to the Earth as precipitation. This does vary geographically. Evaporation is more prevalent over the oceans than precipitation, while over the land, precipitation routinely exceeds evaporation. Most of the water that evaporates from the oceans falls back into the oceans as precipitation.

ANTICIPATORY GUIDE Agree/Disagree

5. The water cycle begins in the ocean and keeps moving and later reenters the ocean. (Disagree)

The water cycle has no starting point, even though most of the Earth’s water exists in the oceans.

Water, water everywhere, but not a drop to drink! How much water do we use in one day?Use the “Water Facts” to calculate your water use

indoors during a 24-hour day. You may begin by monitoring the water you have used since you woke up this morning. Continue monitoring your water use until you go to bed tonight.

Write a personal response to what you discovered. What did you learn? Share the results of what you charted with the members of your group.

Write your final reflections in a short paragraph answering the following: What did you learn from this investigation? What can you do personally to conserve water?