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43 Cards in this Set
- Front
- Back
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amount of matter in one unit of volume
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density
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anything that takes up space and has weight
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matter
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substances that are composed of more than one type of atom bonded together
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compounds
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substance composed of only one atom
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element
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tiny group of two or more atoms that are bonded tightly together
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molecule
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Herschel discovered
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Uranus
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best known for its rings
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Saturn
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Jupiter's largest moon
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Ganymede
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the morning star
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Venus
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speediest planet
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Mercury
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measure of the pull of gravity
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weight
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amount of matter that makes up an object
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mass
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metric unit used to measure mass
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gram
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tiny particles that all matter is composed of
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atoms
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given name to the number of protons in an element
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atomic number
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positive particles found in the nucleus
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protons
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negative particle in an atom
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electrons
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lacking an electrical charge
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neutral
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chemical reaction that occurs when a substance reacts rapidly with oxygen
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combustion
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first man on the moon
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Armstrong
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first man to see colors in white light
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Newton
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first man to travel in space
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Gagarin
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first American to orbit earth
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Glenn
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fothe of modern rocketry
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Goddard
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single rise or depression in a wave
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pulse
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bending of any wave direction at the boundary between two wave nedia
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refraction
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orbit that allows a satellite to remain in the same spot
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geostationary
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back and forth motion that follows the same pattern
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oscillation
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length of one complete wave or cycle of oscillation
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wavelength
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large clouds of gas and dust floating in space
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nebulae
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hot center of the sun
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core
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brightest star in the night sky
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Sirius
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star system containing millions to billions of stars
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galaxy
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hottest region of the sun's atmosphere
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corona
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north star
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Polaris
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a scientist who studies the structure of the earth
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geologist
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trembling or shaking of the earth
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earthquake
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magma that has reached the earth's surface
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lava
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rock formed by sand and minerals pressed together
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sedimentary
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rock changed by heat or pressure
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metamorphic
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arranging animals or other things into groups according to similarities
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classification
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have 3 distict body regions
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insects
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grow back lost body parts
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regeneration
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