Gareth Stevens Vital Science books are designed to help prepare students for NCLB science testing by reinforcing key concepts across the science curriculum. The six volumes in Earth Science use clear language and a variety of photographs, illustrations, and diagrams to help students understand the properties of rocks, soils, water, gases, and fossils. Weather, biomes and ecosystems, and earth's core and crust are also covered, making this a comprehensive and indispensable resource. Each book in the series features: - Concepts that support National Science Education Standards (NSES) and state standards- Text developed in consultation with a science curriculum expert- Clear explanations of key scientific concepts- Diagrams, maps, and other illustrations that enhance understanding- A glossary of key terms