Earth science is about the structure of the earth.
The links below are from Geography4Kids.com.
Introduction to the Earth Earth's Composition Earth's Magnetic Field Earth's Structure Types of Rocks Plate Tectonics Faults Earthquakes Volcanoes The Water Cycle The water in your glass may have fallen from the sky as rain just last week, but the water itself has been around pretty much as long as the earth has! Learn about the cycle water goes through at this site. The Story of Drinking Water Explore the history of drinking water and play games about water at this interactive site. Microbe Zoo Learn about the microbes (very small life forms) found in water by clicking on the Water World link on this interactive website. Moon Olympics Click on the Moon Olympics link to learn about the differences in the gravities of Earth and the Moon. American Museum of Natural History You're bound to find something interesting at this website! This link takes you to a page full of Space links.