What are the forms of water found on Earth?

Water on earth comes in 3 forms: solid, liquid, and gas.

What happens to a puddle of water on a sunny day?

The sun heats the water, causing it to evaporate and become water vapor. That causes the puddle to dry up. The water vapor then rises up into the atmosphere, where it may condense and eventually fall back down to earth as rain.

Where do clouds come from?

Clouds are the result of water vapor condensing into tiny water droplets. Eventually the droplets get big enough that they fall back down to earth as rain, snow or hail.

Where does rain come from?

Rain comes from evaporated water that has risen into the atmosphere where it condenses into a cloud. That means clouds are made of water! The water droplets eventually get too large and fall to the Earth as rain.

How old is water on earth?

Water on Earth has been here for millions of years! It is constantly being recycled through the water cycle.

How do we know there is water vapor in the air?

Some evidence that there is water vapor in the air include clouds, feeling moisture on our skin on a humid day, and seeing droplets form on the outside surface of cold drinks (condensation).

What causes water to change from a vapor to a liquid, or a liquid to a solid?

Water changes form in response to changing temperatures. When the temperature becomes colder, water vapor becomes liquid water. When the temperature becomes warmer, liquid water becomes water vapor.

Does water become cleaner when it evaporates into a water vapor? Why or Why not?

Yes, generally, water becomes cleaner when it evaporates. Particles in water typically do not evaporate into vapor when water does, so particles are left behind when water vapor rises.

What happened to the dirt and grass in the DIY Solar Bowl investigation when the water condensed on the plastic covering? Why?

The dirt and grass were left behind in the bowl because they were too heavy to evaporate

What happens in the distillation process?

In the distillation process, water is heated until it becomes water vapor. The water vapor rises and enters into a special tube that allows the vapor to cool and become liquid once again.

Water Cycle (3-5 Version)

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What you will learn from this videoWhat you will learn

Water on Earth is millions of years old and is constantly being recycled.
Water vapor is constantly evaporating from the surface of the Earth.
Water vapor in the air condenses to form clouds.
Water falls back to earth and the cycle repeats.

Discussion Questions
- Before Video
  What are the forms of water found on Earth? ANSWER
  - Water on earth comes in 3 forms: solid, liquid, and gas.
  What happens to a puddle of water on a sunny day? ANSWER
  - The sun heats the water, causing it to evaporate and become water vapor. That causes the puddle to dry up. The water vapor then rises up into the atmosphere, where it may condense and eventually fall back down to earth as rain.
  Where do clouds come from?ANSWER
  - Clouds are the result of water vapor condensing into tiny water droplets. Eventually the droplets get big enough that they fall back down to earth as rain, snow or hail.
  Where does rain come from?ANSWER
  - Rain comes from evaporated water that has risen into the atmosphere where it condenses into a cloud. That means clouds are made of water! The water droplets eventually get too large and fall to the Earth as rain.
  How old is water on earth? ANSWER
  - Water on Earth has been here for millions of years! It is constantly being recycled through the water cycle.
- After Video
  How do we know there is water vapor in the air?ANSWER
  - Some evidence that there is water vapor in the air include clouds, feeling moisture on our skin on a humid day, and seeing droplets form on the outside surface of cold drinks (condensation).
  What causes water to change from a vapor to a liquid, or a liquid to a solid? ANSWER
  - Water changes form in response to changing temperatures. When the temperature becomes colder, water vapor becomes liquid water. When the temperature becomes warmer, liquid water becomes water vapor.
  Does water become cleaner when it evaporates into a water vapor? Why or Why not? ANSWER
  - Yes, generally, water becomes cleaner when it evaporates. Particles in water typically do not evaporate into vapor when water does, so particles are left behind when water vapor rises.
  What happened to the dirt and grass in the DIY Solar Bowl investigation when the water condensed on the plastic covering? Why? ANSWER
  - The dirt and grass were left behind in the bowl because they were too heavy to evaporate
  What happens in the distillation process? ANSWER
  - In the distillation process, water is heated until it becomes water vapor. The water vapor rises and enters into a special tube that allows the vapor to cool and become liquid once again.
Vocabulary
- Evaporation DEFINE
- Condensation DEFINE
- Water Vapor DEFINE
- Water Cycle DEFINE
- Dew DEFINE
- Clouds DEFINE
- Precipitation DEFINE
- Distillation DEFINE
Reading Material
DIY Activity Guide
Lesson Plan
Lesson Plan
Teacher Guide
Assessment
Google Forms Online Quiz Game Quiz PDF Exit Ticket