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

There are some key words that you need to know for circles: radius, circumference, diameter, sector, segment, tangent, chord and arc. In this video you will discover what they all mean.

This video discusses the topic of circles.

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

This video explains the equation of a circle.

Why do astronauts appear weightless despite being near the Earth?

Basics of gravity and the Law of Universal Gravitation.

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

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.

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