E School Today: Photosynthesis

Find out about the needs of plants to grow and live.

Explains a basic concept in genetic engineering, i.e., the genetic modification of living things. Describes how it is done, how it differs from cloning, the benefits it offers, and the concerns people have about this practice.

Learn about the classification of matter based on whether the chemical composition is pure or a mixture. Understand the definitions of elements, compounds, substances, and mixtures, and what the differences are between them. Five types...

Explains different kinds of energy, covering kinetic, potential, gravitational, mechanical, sound, thermal, chemical, electrical, and radiant energy. Also looks at storage, transfer, and dissipation of energy. Includes a short...

Covers the three main types of rocks, different weathering processes, erosion, and the rock cycle.

Learn all about clouds, how they form, the different types, and how they can be used to predict the weather.

Learn about the different stages of the Earth's water cycle, and about processes involving water, including runoff, infiltration, and the differences between hard and soft water.

Learn about all the different levels of ecosystems, from the living things under a rock, up to a rainforest biome. Explains the levels of organization within an ecosystem, the different types of biomes, food chains and trophic levels,...

Looks at the two categories of natural resources, what they are used for, their distribution around the world, threats to natural resources, recycling and composting, and conservation.

Learn about the different kinds of forests, how forests are structured, their importance, deforestation and its impact, forest degradation, and what individuals can do to protect forests.