Name: Date:

Class: Evaporation Rate Lab

Evaporation Rate Lab C

Question: How does TEMPERATURE affect the evaporation rate?

Hypothesis: Water at a higher temperature will evaporate than water at a lower temperature because

Materials: List the materials you will use – say how much or how many of each item.

o  1 heat lamp

o  2 thermometers

o  2 cups

o  1 graduated cylinder

o  water

Procedure: Fill in the steps that you will follow during your experiment.

1. 

2. 

3. 

4. 

5. 

Data: Draw a table below to organize your data.

Condition of water / Starting volume of water / Ending volume of water / Evaporation in 24 hours / Evaporation rate: ml per hour
Warmer
(under lamp)
Cooler
(no lamp)


Analysis: Write 2-3 paragraphs answering the following questions:

The answer to the experimental question is My data shows this because

My hypothesis was . I predicted that What really happened was

One example of how temperature affects evaporation in the real world is

(Choose one of the questions below – A or B – to answer.)

A. If I could do this experiment again, I would improve it by

because

B. Another water cycle experiment that would be interesting to try is


Name: Date:

Class: Evaporation Rate Lab

Evaporation Rate Lab B

Question: How does WIND SPEED affect the evaporation rate?

Hypothesis:

Materials: List the materials you will use – say how much or how many of each item.

Procedure: Fill in the steps that you will follow during your experiment.

1. 

2. 

3. 

4. 

5. 

Data: Draw a table below to organize your data.


Analysis: Write 2-3 paragraphs answering the following questions:

·  What is the answer to your experimental question? How does your data prove this?

·  Was your hypothesis right or wrong? Explain what you predicted and how that compares to what happened in the experiment.

·  How does this experiment relate to the real world? In what situations does wind speed affect evaporation rate?

·  How could you improve this experiment? –or– What other experiments would you like to do relating to the water cycle?

Name: Date:

Class: Evaporation Rate Lab

Evaporation Rate Lab A

Your mission: Use the available materials to design an experiment to answer the question below. Your lab should include:

·  Question

·  Hypothesis

·  Materials

·  Procedure

·  Data – record your data; calculate the total evaporation for the day and the evaporation rate in ml/h (milliliters per hour)

·  Analysis - discuss what your data proves about the question and your hypothesis; relate the lab to the real world; make suggestions for improving the lab or for future experiments to learn more about the water cycle.

Type up your lab report or write it on looseleaf.

Question: How does SURFACE AREA affect the evaporation rate?