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General Physics Science Fair Project

Cooling Cars with Sunshades

Cooling Cars with Sunshades | Science Fair Projects | STEM Projects
In this project, you'll compare the temperatures of three cars parked in the sun. One car will have no sunshade, one will have a reflective bubble sunshade, and one will have a reflective foam sunshade. You'll measure the temperatures of the cars' dashboards with an infrared thermometer to see which sunshade works best.


The hypothesis is that the reflective bubble sunshade will be the most effective cooling.

Method & Materials

You will inspect three cars to make sure they are the same make and model, interior and color. Then you will park the cars directly under the sun and measure the temperatures on the dashboards every two hours. On the second day, you will fit one car with a reflective bubble sunshade, one with a reflective foam sunshade, and leave one with no sunshade.
You will need three cars of the same make and model, interior and color, one reflective bubble sunshade, one reflective foam sunshade, and one infrared thermometer.


The experiment showed that the car with the reflective bubble sunshade had the lowest cabin temperature. This proves that sunshades are effective in blocking the sun's rays from entering the car and reducing the build up of temperature in the car.

Why do this project?

This science project is interesting because it shows how sunshades can be used to reduce the temperature in a car on a hot day. It also shows how different types of sunshades can be compared to see which one is the most effective.

Also Consider

Variations of this experiment could include using cars with tinted glass or cars with different colors and sunshades.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

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