This document contains a review of topics for a Chapter 2-3 test, including: volcanic eruptions, weathering types, the layers of the Earth, tectonic plates, earthquakes, tsunamis, the spheres of the Earth, ecosystems, erosion, lava vs magma, convection, biomes, tree types, precipitation, climate factors, desert rainfall, tides, tectonic plate interactions, and Earth's seasons. It lists 24 topics and terms that will be on the test.