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

Part 1: Adding integers
Part 2: Examples of adding integers
Part 3: Common mistakes made when adding integers

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.

Why do astronauts appear weightless despite being near the Earth?

The division and multiplication of integers
Order of operations

Basics of gravity and the Law of Universal Gravitation.

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.

Part 1: Multiplying integers
Part 2: Examples of multiplying integers
Part 3: Common mistakes made when multiplying integers

Part 1: Representation, comparison and ordering of integers on the number line
Part 2: Examples related to the representation and comparison of integers on the number line
Part 3: Common mistakes and misconceptions

Speed necessary for the space station to stay in orbit.