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Vocabulary 2.7

2.7 Challenge

WordDefinition
conductor Material that allows energy to pass through.
conductivity The measure of how easily matter transports heat or electricity.
hardness The measure of how easily the matter can be scratched or crushed.
malleability The measure of how easily matter can be shaped into different forms. If it cannot, but breaks apart instead, it is brittle.
gravity The force of attraction between all masses in the universe.
mass A measure of the amount of matter in an object.
speed A rate that tells distance traveled per unit of time.
distance How far an object has moved.
acceleration A change in the speed or direction of an object; the rate a which velocity changes.
weight A measure of the force of gravity acting on an object.
reflection Light energy that bounces off objects.
refraction Bending of light rays when they pass through a substance.
landform A physical structure on Earth that forms naturally.
weathering Process by which exposed rock is broken down by wind, water, or ice.
erosion The movement of weathered material by wind, water, or ice.
deposition Process by which weathered and eroded material is deposited by wind, water, or ice.
friction The force that two surfaces exert on each other when they rub against each other.
force A push or pull that changes the motion of an object.
newtons The unit of measurement for force.
direction The path that a moving object follows.
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