This textbook chapter looks at the role of temperature in sustaining life on Earth and on weather and climate. It discusses the Earth's movements and the seasons, the circulation of the oceans, wind and weather, and the water cycle....

[Free Registration/Login Required] This flipchart contains definitions for axis, rotation, revolution explanation of seasons and an assessment using Activotes.

[Free Registration/Login Required] In this unit children learn about the shapes and relative sizes of the Earth, Sun and Moon. Using models they learn how the three bodies move relative to each other and how these movements relate to...