Science Projects for Kids: Nutrition and Health


Path of a Ball
You can determine the return path of a ball by the angle at which you toss it.
You can determine the return path of a ball by the angle at which you toss it.
©2007 Publications International, Ltd.

Why should you learn the path of a ball? Because tossing and catching a ball can be good exercise, and it's something that's fun to do even if you're by yourself. Just find an outside wall at which you can toss the ball so that it will bounce back for you to catch.

But in order to catch the ball, you need to know where that returning ball is going to bounce. So how do you find out? A ball will bounce off a wall at an angle equal to the angle at which it struck the wall.

What You'll Need:

  • Small ball
  • Wall

Step 1: Take a small ball with a good bounce, and throw it straight at a smooth wall. Watch the ball carefully. If it hits the wall straight on, it will bounce straight back to you.

Step 2: Now move to the side so you can throw the ball so that it hits the wall at an angle. Watch the ball carefully. It will not bounce back to you; instead, it will bounce off the wall at an angle equal to the angle at which it struck the wall.

Step 3: Move to another spot where you can throw the ball so that it hits the wall at an even sharper angle. Again watch the path of the ball. It will be equal to the sharp angle at which the ball struck the wall.

You can use your ball -- and a variety of others -- for a project that demonstrates how gravity plays a part in ball bouncing, next in science projects for kids: nutrition and health.

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