Activities

1. Identify what temperature water freezes at in both Fahrenheit and Celsius.

2. Define condensation.

3. Compare and contrast evaporation and melting.                                      

4. Summarize what happens during evaporation.

5. You bring an ice-cold water bottle outside on a hot day. Predict what might happen.

6. Your father says that the rain that is falling from the sky could have been the rain that fell on your great grandparents. Explain the phenomena in terms of the concepts we have learned.

Answer Key/Rubric

1. Water freezes at 32 degrees Fahrenheit and 0 degrees Celsius.

2. Condensation is when a gas becomes a liquid.

3. Acceptable responses may include, but are not limited to:

• Evaporation and melting are both phase changes that water goes through.
• Evaporation is when a liquid becomes a gas.
• Melting is when a solid becomes a liquid.

4. Acceptable responses may include, but are not limited to:

• During evaporation, a liquid becomes a gas.
• Heat causes the liquid to rise in the air and turn water into water vapor.

5. Acceptable responses may include, but are not limited to:

• The water bottle might become wet.
• This is because of condensation.
• The water vapor in the air hits the cold bottle, and it turns into a liquid.
• The water also might become warm.

6. Acceptable responses may include, but are not limited to:

• This could be true because of the water cycle.
• In the water cycle, the water goes through the different phases.
• It evaporates, then condenses, and is recycled back down to Earth.