aluminum: A metallic element, the third most abundant in Earth’s crust. It is light and soft, and used in many items from bicycles to spacecraft.
average: (in science) A term for the arithmetic mean, which is the sum of a group of numbers that is then divided by the size of the group.
axis: (in mathematics) The line to the side or bottom of a graph. It is labeled to explain the graph’s meaning and the units of measurement.
clay: Fine-grained particles of soil that stick together and can be molded when wet. When fired under intense heat, clay can become hard and brittle. That’s why it’s used to fashion pottery and bricks.
computer program: A set of instructions that a computer uses to perform some analysis or computation. The writing of these instructions is known as computer programming.
copper: A metallic chemical element in the same family as silver and gold. Because it is a good conductor of electricity, it is widely used in electronic devices.
data: Facts and/or statistics collected together for analysis but not necessarily organized in a way that gives them meaning. For digital information (the type stored by computers), those data typically are numbers stored in a binary code, portrayed as strings of zeros and ones.
diameter: The length of a straight line that runs through the center of a circle or spherical object, starting at the edge on one side and ending at the edge on the far side.
electric charge: The physical property responsible for electric force; it can be negative or positive.
electricity: A flow of charge, usually from the movement of negatively charged particles, called electrons.
electromagnetism: The science that has to do with the physical links between electricity and magnetism. It’s also the term for the properties of an electric current that cause it to generate a magnetic field. This term can also be applied to the physical force (the electromagnetic force) that governs interactions between charged particles and which are due to…
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