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What is the acceleration due to gravity at the space station.

Why do astronauts appear weightless despite being near the Earth?

This online article delves into our the sun and planets were formed.

Basics of gravity and the Law of Universal Gravitation.

Introduction to passive and active transport

These four short online lessons will cover the following:

• The planets of the solar system
• Planet orbits in the solar system
• Gravity in the solar system
• Inner vs outer planets

This unit is about how things move along a straight line or, more scientifically, how things move in one dimension. Examples of this would be the movement (motion) of cars along a straight road or of trains along straight railway tracks.

Osmosis is the movement of water across a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration. Osmosis helps regulate the flow of water in and out of cells, which is crucial to their function.

This short online lesson discusses the planet Jupiter.

This short online lesson explores the planet Mars.