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This online resource discusses the distribution of earth's water.

When electromagnetic radiation is absorbed by a material the energy it carries has to go somewhere. When lower energy waves, like radio and infrared waves, are absorbed there can be an increase in temperature of the absorbing material. Higher energy waves, like x-ray and gamma waves, can actually permanently damage or change materials. Learn about the different types of electromagnetic waves and how their energies can influence their effects on objects.

This YouTube video explains how to calculate an irregular area on a map.

This YouTube video explains how to calculate a regular area on a map.

This YouTube video will guide you through a fun activity where you will draw the earth's continents and oceans.

This online tutorial guides you through what information a map shows, map legends and the different types of maps which are available.

This online resource discusses the importance of the ocean, the layers and composition of the ocean and how it moderates climates.

This online tutorial will provide you with some guidelines on how to interpret both topographic and geologic maps.

This online resource investigates the features and topology of the ocean floor, the effects of wave erosion and the landforms created by coastal depositions.

An explanation of wave interference and solution of a few examples to find the value of the total wave when two wave pulses overlap