What differences do you observe between the two circles?
Did the liquid water disappear? What happened to the liquid water?
Which phase change happened to the liquid water?
When a liquid turns into a , such as when liquid water turns into water vapor, we call that . The water drops that were on your paper have evaporated. Evaporation is the of condensation.
Water vapor in the comes from liquid water that has evaporated.
During condensation, the molecules that form liquid water appear out of nowhere.
They come from .
Similarly, when liquid water , the molecules that were part of liquid water don’t . They become water vapor.
Pre Reading Check
Post Reading Check
New water forms on Earth every few years.
Read the question below.
In the first three boxes, record big ideas from each source that help you answer the question.
Connect ideas together to come up with a new understanding that answers the question.
Source: Drinking Cleopatra's Tears
How can water on Earth a long time ago still be on Earth today?
How does water change phases to move around Earth?
After water goes up into the atmosphere (evaporation), how does the water come back to earth?
Source: Freshwater and Saltwater Drops Investigation
In the Freshwater and Saltwater Drops Investigation, you saw what happened to a drop of freshwater and a drop of salt water when exposed to the air.
Where does the water from evaporation come from?
Where does the water that evaporate go?
Source: Condensation Investigations (ice water in a cup, frozen empty cup, ice water in a cup in a bag)
In all of the investigations that used cups of ice water and frozen cups, you saw what happened to the outside of a cold cup.
How do water drops form?
Criteria For Success:
Identify where the water drops come from
Include the amount needed
Identify temperature does rain/water drops form
Describe the phase change that makes rain/water drops
New understanding: Do water molecules ever disappear? Why or why not?
Water from Cleopatra’s tears disappear. When liquid water turns into water vapor, all of the water molecules are . They are just from place to place and their (position) is changing as water continuously changes phase.
Criteria For Success:
Explain the phase change from water in the puddle going up into the atmosphere (air)
Explain the phase change from water in the air forming a cloud
Use the words evaporation or evaporate and condensation or condense
How can a puddle turn into a cloud? Write 2 sentences to explain your answer.
Water from the puddle _______
How do raindrops form?
Criteria For Success:
Identify where the water for rain come from
Include the amount of water needed for it to rain
Identify temperature does rain/water form
Describe the phase change that makes rain/water drops
Raindrops form when ______
After the phase change, what happened to the distance of the molecules that make up the liquid water?
Dinosaurs may have drank the same water you bathe in.
If all the water vapor in the atmosphere condensed, it would cover the whole Earth.
Air is always dry.
Your body is made of water.
