Weather Science Projects

The following sample weather science projects experiment is meant to give you ideas on how to perform experiments and arrange your project. After trying this weather project, take a shot at coming up with additional ideas and procedures for expanding this experiment.

Weather Science Projects: Temperature, Pressure and Humidity

This weather science project examines the relationships between temperature, pressure and humidity in differing weather conditions.

Background:

Research information on weather. What are temperature, pressure and humidity? How do they relate to weather? What are the most commonly used instruments that read temperature, pressure and humidity? How are they used?

Hypothesis:

With your research in mind, formulate your hypothesis on the relationship between temperature, pressure and humidity in differing weather conditions. Is low temperature more closely related with high or low pressure/humidity? Is high temperature more closely related with high or low pressure/humidity?

Materials: (Adult supervision of kids is always recommended.)

• Thermometer/Hygrometer

           

            Science Kit: Dial Thermometer/Hydrometer

• Outdoor Barometer - Optional (You may also check your local weather for barometric readings.)
  
  
• Paper
  
  
• Pencil
  
  

Procedure:

1. Gather the materials needed for your weather science project experiment. It is advisable to start this weather experiment well in advance of your science fair.

2. Follow instructions and safety precautions for using your thermometer/hygrometer and your barometer outdoors.

3. Use your thermometer/hygrometer to read the humidity and temperature on a hot day (80-95 degrees F). Use your barometer to read the pressure for the same day. Record this in your data table.

4. Repeat step 3 for four other days. Make sure to take the readings around the same time each day. Record these measurements in your data table.

5. Use your thermometer/hygrometer to read the humidity and temperature on a warm day (70-80 degrees F). Use your barometer to read the pressure for the same day. Record this in your data table.

6. Repeat step 5 for four other days. Make sure to take the readings around the same time each day. Record these measurements in your data table.

7. Use your thermometer/hygrometer to read the humidity and temperature on a cool day (60-70 degrees F). Use your barometer to read the pressure for the same day. Record this in your data table.

8. Repeat step 7 for four other days. Make sure to take the readings around the same time each day. Record these measurements in your data table.

9. Use your thermometer/hygrometer to read the humidity and temperature on a cold day (40-50 degrees F). Use your barometer to read the pressure for the same day. Record this in your data table.

10. Repeat step 9 for four other days. Make sure to take the readings around the same time each day. Record these measurements in your data table.

Record Observations

Temperature (°F)	Pressure					Humidity
	Trial 1	Trial 2	Trial 3	Trial 4	Trial 5	Trial 1	Trial 2	Trial 3	Trial 4	Trial 5
80-95
70-80
60-70
40-50

Results:

Record your data and compare your results. How did temperature relate to pressure? How did temperature relate to humidity? How can you explain the relationship between temperature, humidity and pressure? Do you think the climate zone had an effect on the results of your experiment? Explain.

Conclusion:

Summarize what happened in your weather science projects experiment based on your results. Explain the results of your experiment. Was your hypothesis supported? If not, explain why. Evaluate your experiment and suggest improvements.

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