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Physical 5
Vocabulary
Term | Definition |
---|---|
force | push or pull that causes an object to move, stop, or change directions |
reflection | light energy that bounces off objects |
refraction | bending of light rays when they pass through a substance |
heat | movement of thermal energy from one place to another |
flow | smooth steady movement of liquid, gas or electricity |
solar energy | energy of sunlight- it drives the water cycle |
sound | energy caused by a vibrating object |
physical properties | properties that can be observed, measured, or changed |
magnetism | force of attraction (attract) or repulsion (repel) some materials have on other materials |
conductor | material that allows energy to pass through |
insulator | material that blocks energy from moving through |
mixture | parts mixed that you can take apart; combination of 2 or more substances that do not chemically change |
solution | a liquid mixture in which the particles of each substance are evenly mixed- like sugar dissolving in water |
density | concentration of matter in an object, tightly or loosely packed |