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electric current A flow of charge, called electricity, usually from the movement of negatively charged particles, called electrons.
electric field A region around a charged particle or object within which a force would be exerted on other charged particles or objects.
engineer A person who uses science to solve problems. As a verb, to engineer means to design a device, material or process that will solve some problem or unmet need.
gel A gooey or viscous material that can flow like a thick liquid.
prey (n.) Animal species eaten by others. (v.) To attack and eat another species.
proton A subatomic particle that is one of the basic building blocks of the atoms that make up matter. Protons belong to the family of particles known as hadrons.
rays (in biology) Members of the shark family, these kite-shaped fish species resemble a flattened shark with wide fins that resemble wings.
shark A type of predatory fish that has survived in one form or another for hundreds of millions of years. Cartilage, not bone, gives its body structure.
subatomic Anything smaller than an atom, which is the smallest bit of matter that has all the properties of whatever chemical element it is (like hydrogen, iron or calcium).
synthetic An adjective that describes something that did not arise naturally, but was instead created by people. Many have been developed to stand in for natural materials, such as synthetic rubber, synthetic diamond or a synthetic hormone. Some may even have a chemical makeup and structure identical to the original.