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36 Cards in this Set
- Front
- Back
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light
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a form of energy that travels through empty spaces
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reflection
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the bouncing back of light waves off of a surface
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refraction
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the bending of light waves as they travel from one surface to another
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convex lens
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a lens that is thicker in the center and thinner at the edges,a shape that bends light inward
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concave lens
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a lens that is thinner in the center and thicker at the edges,a shape that bends light outward
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Sedimentary
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rock formed when sediments are pressed together
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Igneous
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rock formed when lava cools
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Metamorphic
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rock formed when another kind of rock was squeezed and heated deep inside the earths crust
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Fossils
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the reamains of a plant or animal that lived long ago
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Fossil Fuels
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fuels that are formed from the remains of dead plants and animals that lived a long time ago such as coal,oil,and natural gas
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Force
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a push or pull
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Motion
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movement
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Friction
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a force that works against motion
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Gravity
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the force that pulls objects toward one another
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Inertia
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the tendency of an object to resist a change in motion
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Electricity
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a form of energy produced inside particles of matter
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Current
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the movement of electricity in a certain path
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Source
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where the energy come from
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Conductor
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a substance that allows electricity to easily travel through it
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Insulator
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a substance that does not allow electricity to pass through
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Mixture
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a combination of two or more substances that do not join together to form a new substance
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Solution
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a mixture in which the substanceare spread out evenly between one another and cannot be told apart
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Dissolve
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to form a solution with another substance
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Invisible
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cannot be seen
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Physical Properties
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a characteristic of matter that can be observed or measured and can be changed without changing the matter itself
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Property
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a characteristic used to describe matter
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Texture
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how a substance feels or looks
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Odor
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how a substance smells
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Solar Energy
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energy that comes from the sun
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Wind Energy
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energy that comes from the movement of air over the surface of the earth
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Hydroelectric
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electricity that is produced using the energy of water moving through a dam
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Geothermal
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heat from melted rock deep below earth's surface used to heat buildings and produce electricity
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Biofuels/Biomass
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fuel that comes from plants and animals
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Landform
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a natural structure found on the surface of the earth
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Weathering
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the breaking down of rock on the surface of the earth usally by the force of water, wind, or ice
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Erosion
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the movement of weathered particles
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