Friction helps your shoes grip the floor so that you do not slip. Friction is the force that makes a bicycle move, too. It causes the wheels and the ground to push against each other. Without friction, it would be too slippery for a bike to start or stop.
Write a report that explains how friction helps a bicycle stop moving. To write your report, you will need to research bicycle brakes. Here are some questions to guide your research:
What is friction?
What are some different types of bicycle brakes?
What happens when you squeeze a bicycle's brake lever?
How does friction help a bicycle stop moving?
Are you ready? Begin by visiting the Web sites in Step 2. Look for answers to the questions above, and write down what you learn in the note-taking boxes.
With teacher supervision, you may use search engines to research other Web sites. You also can research bicycle brakes at the library. When you are ready, follow Steps 3 and 4 to write your report.
Step 2. Research
Research answers to the questions you were asked in Step 1. Visit these Web sites. Take notes about them on this page, too!
Toolbox Tip: Click here to learn what plug-ins are and how to install them on a computer.
