Balloon car science project

What happens if you inflate the balloon more? Example graph showing how the light sensor reading drops when the car drives over the phone.

Balloon powered car lab report

For example, you may need to do this if your car's body is transparent like a plastic bottle or if it has a frame built from straws that lets a lot of light through. To learn how to use the Science Journal app and how to use the light sensor, you can review the relevant tutorials on this Science Journal tutorial page. What happens if you try to inflate the balloon even more? Write down your observations and ideas in your lab notebook. Get some friends and try building different cars and racing them against one another. If your car works, but not very well it only moves forward a little, or it moves but turns to one side instead of going straight , try to figure out how you could improve it. Note: This project was tested with the Android version of Science Journal in which light intensity is measured using the ambient light sensor and given in lux. Calculate the difference between these two times. Note: The following steps include some specific tips that might be helpful when building your car, but remember that you do not have to use the construction methods shown in this project. Tape the neck of the balloon around one end of the other straw. Repeat several test runs with your completed car, and record how far it travels. You can come up with your own design requirements, but here are some suggestions: The car should be sturdy and not fall apart when in use.

Make a sketch of your design on paper before you start building. You earn points for each unused item.

best balloon powered car

For example, if your car has large CD wheels that stick out to the front and back, and you are placing the phone face-up under the car, do not count the wheels as part of the length because they will not block light.

Calculate your car's velocity v using Equation 1.

Balloon car science project

The x-axis shows time in minutes:seconds [min:s] and the y-axis is light intensity in lux. If you took pictures, compare the first picture of your car to the last picture.

You can download the app from Google Play for Android devices version 4.

Best wheels for a balloon car

If your car works, but not very well it only moves forward a little, or it moves but turns to one side instead of going straight , try to figure out how you could improve it. Extra: There are many different ways to build a balloon car. What happens? Use a tape measure to record how far the car traveled from where it started to where it came to a complete stop, and write this distance down in your lab notebook. Does it work best if the straw is aimed straight back? If necessary, modify the body of your balloon car so it will completely block light. Inflate the balloon and let your car drive over the phone. What happens if you inflate the balloon more? The material requirements are summarized in Table 1. Documenting your design ideas is important for an engineering project, especially if you are entering a science fair. Tape the neck of the balloon around one end of the other straw. Depending on what you use for wheels and axles, you will need to come up with a way to securely attach them. Do an internet image or video search for "balloon powered car" and you will see many different designs, made from different materials.
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