Science Focus: The surface of the earth changes. Some changes are due to slow processes, such as erosion and weathering, and some changes are due to rapid processes, such as landslides, volcanic eruptions, and earthquakes.
Social Studies Focus: Understanding how natural landforms have created the shape of the land where we live.
One Kids Geology-A description of each type of landform
Mogschool-Processes that change the Earth
Kids Britannica-Topographic Maps