Describe the observable properties of some kinds of matter from leaves to rocks to different kinds of animals. Learn more about time, motion, and gravity.
Use your observational skills to identify different skinds of matter and how they relate to the Earth's composition and resources.
Discover how changes in matter affect the Earth' oceans and continents.
Learn how the laws of gravity can be applied to meteorites. Discover more about one of the world's greatest physicists, Albert Einstein.
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