Step 1. Questions
Jump up into the air. Very quickly, you fall back down to Earth. Why? Earth’s gravity pulls on you and everything around you.
Gravity is an invisible force. You cannot see it, but it’s there. Earth’s gravity even extends to the Moon! The Moon stays in its orbit because Earth’s gravity holds it there.
For this e-Journal project, you will research and report on gravity. Here are some questions to guide your research.
Are you ready? Begin by visiting the three Web sites listed in Step 2. You may also use search engines to research more about gravity or its role in the Universe. Or find books at the library.
- What does gravity do?
- Do two small things, like a pair of ping-pong balls, pull on each other because of gravity? If yes, why don’t we see the effects?
- Along with gravity, what force keeps Earth’s Moon in its orbit?
- Why is the Moon’s gravity less than Earth’s gravity?
- What would the Universe be like without gravity?
- What questions do you have about gravity?
Take notes in the note-taking boxes. When you are ready, follow Steps 3 and 4 to write your report.
Step 2. Research
Research answers for the questions you were asked in Step 1. Visit these Web sites. Take notes about them on this page, too!