1. The Water Cycle 6th Grade

2. D.S.Q February 9, 2017 1. What are the three states of matter?
2. How do these states of matter appear in water?
3. What is the process by which liquid water changes to water vapor?
4. What is the process by which water vapor changes to liquid water?
5. What is the process by which liquid water becomes solid?
6. What is the process that happens when liquid or solid water falls from the sky?
7. Do plants participate in any of these processes?

3. 1. What are the three states of matter?
Solid, liquid, and gas.
2. How do these states of matter appear in water?
Solid (ice, sleet, hail, and snow) Liquid -(rain) Gas (water vapor)
3. What is the process by which liquid water changes to water vapor?
Evaporation
4. What is the process by which water vapor changes to liquid water?
Condensation
5. What is the process by which liquid water becomes solid?
Crystallization
6. What is the process that happens when liquid or solid water falls from the sky?
Precipitation
7. Do plants participate in any of these processes?

5. Water Cycle Vocabulary Match
1. Match the icons to the vocabulary words on the graphic organizer.
2. Cut out the icons and glue them next to the word.
3. Turn the graphic organizer so you can write the following in the long empty rectangle on the left: “Mechanisms of the Water Cycle.”
4. Cut the graphic organizer out of the sheet of paper along the double bold lines. This will make one big rectangle.
5. Place glue along the back of the long rectangle and press into your lab journal.
6. Fold along the solid line.
7. Cut the dotted lines to the fold so that you have flaps of paper.
8. Under each flap write the definition of the term in your own words.

6. DSQ
What are the steps to the water cycle and how do they all fit together?
Evaporation and transpiration put liquid water back into the air as water vapor. Condensation and crystallization can change the phase of water vapor to a liquid or solid. Precipitation brings liquid or solid water from the atmosphere to Earth.

8. DSQ January 26, 2016 1. Explain what thermal energy is?
2. Fill in the missing blanks

9. Pre-Activity Discussion
Where do we find water in Earth’s system?
In the atmosphere, in oceans, lakes, ponds, underground reservoirs, glaciers, snow
Science tells us all of the water molecules that ever existed on Earth are still present today. Yet, ponds dry up, droughts and floods occur. How does water move from place to place?
The water cycle.
What is the water cycle?
The water cycle is the movement of water through the different spheres of Earth.
What are the different spheres of Earth?
Biosphere, lithosphere, atmosphere, hydrosphere, geosphere
Where does the energy come from that drives the cycle?
The Sun
What are the mechanisms that drive the cycle?
Precipitation, evaporation, transpiration, condensation, crystallization

10. The Water Cycle
IS a continuous movement of water on, above and below Earth’s surface.
The water cycle occurs in the Hydrosphere (one of the layers of the Earth)
The Sun provides the energy that drives the water cycle and moves water from place to place
Water can change from a solid, to a liquid to a gas and then back again during the water cycle

11. Thermal Energy
The change of state requires either an input or output of thermal energy

13. Evaporation
Evaporation is the process by which a liquid changes into a gas
Steps water takes to turn into water vapor (gas)
1. Sun shines on the ocean and the water near the surface absorbs the energy and becomes warmer.
2. The water molecule of water absorbs energy and it begins to vibrate faster.

14. Evaporation Continued
3. When the water molecule has enough energy, it breaks away from the other water molecules in the ocean
4. It rises into the atmosphere as a molecule of gas called water vapor

15. Transpiration & Respiration
Oceans, rivers, lakes, puddles and soil make up about 90% of the water that enters the atmosphere.
The remaining 10% us produced by transpiration
Transpiration is the process by which plants released water vapor through their leaves

16. Transpiration & Respiration Cont.
Some water vapor also comes from organisms through cellular respiration, which takes place in cells.
When animal breathes, they released CO2 and water vapor from their lungs into the atmosphere

17. Condensation
Condensation is the process by which a gas changes to a liquid
As water vapor rises, it becomes cooler and eventually loses thermal energy and turns back into a liquid.
Tiny droplets of water join to form larger drops and when millions of droplets come together, a cloud forms

18. Precipitation
Once the droplets get to large and heavy in the cloud, they fall onto Earth’s surface.
Precipitation is the moisture that falls from clouds to Earth’s surface.
75% of precipitation falls into the ocean and the rest falls on land
What pulls the precipitation to the ground?
Gravity which is the force that pulls objects to the Earth

19. Runoff
When rain or snow falls onto the earth, it just doesn't sit there, it starts moving according to the laws of gravity.
A portion of the precipitation seeps into the ground to replenish Earth's groundwater. Most of it flows downhill as runoff.
Runoff is precipitation that did not get (infiltrated) absorbed into the soil, or did not evaporate, and therefore made its way from the ground surface into places that water collect.

20. Runoff