[Free Registration/Login may be required to access all resource tools.] Discover how scientists learn about Earth's interior using seismic waves, meteorites, density, and the magnetic field. Additional resources are available for download.

[Free Registration/Login may be required to access all resource tools.] Covers metamorphic rocks, which form from previous rocks exposed to heat and/or pressure.

[Free Registration/Login may be required to access all resource tools.] Looks at how atmospheric circulation cells affect the climate of regions.

[Free Registration/Login may be required to access all resource tools.] Elaborates on radioactive decay as a tool for determining the age of certain minerals and other materials, including the limits of the technique.

[Free Registration/Login may be required to access all resource tools.] Explains how to prevent hazardous waste pollution and how the Superfund Act regulates this type of pollution.

[Free Registration/Login may be required to access all resource tools.] Presents the classifications of igneous rocks based on silica content.

[Free Registration/Login may be required to access all resource tools.] Describes the air pollutants released from fossil fuels, biomass burning, and volatile organic compounds.

[Free Registration/Login may be required to access all resource tools.] Describes features of the seafloor and how they are mapped by echo sounding. It touches upon the continental margin as well.

Overview of the basic concepts behind evolution, such as gene variation and adaptations.[Free Registration/Login may be required to access all resource tools.]

[Free Registration/Login may be required to access all resource tools.] How close a region is to the ocean affects its climate.

[Free Registration/Login may be required to access all resource tools.] Covers convergent plate boundaries where an oceanic plate meets a continental plate.

WGBH in collaboration with NASA presents digital media resources you can use to teach topics in K-12 Earth and Space Science. These free resources are organized into four grade bands. Each resource emphasizes engaging students in...