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Unit 6 Vocab

TermDefinition
Spring Tides occurs during new and full moon -all gravitational force are added together -extreme high & low tides -high tidal range
Neap Tides during 1st and 3rd quarters of the moon -gravitational forces are offset -tidal range is the smallest value
Perigee point closest to the Earth during Rotation
Apogee point farthest away from Earth during rotation
Tide gravitational attraction btwn Earth and the moon causes oceans rise and fall -moon pulls on diff parts of Earth at diff times -2 high & 2 lows tides every 24 hrs
Revolutions -seasons -period required for Earth to revolve once around the Sun, which determines seasons -takes 1 yr to complete -365.26 -Earth's distance from sun varies
Rotation turning or spinning of a body on its axis -day & night -2 kinds of measurement: -Mean Solar Day-noon-noon(24 hrs) -Sidereal Day- time it takes for Earth to make 1 complete rotation (360) w/respect to a star other than the sun
Precession slight movement, over a period of 26,000 yrs where Earth's axis points in diff directions -points to two stars (polaris and vega) -doesn't affect the seasons
Barycenter point btwn 2 objects where they balance each other -center of mass where 2 or more celestial bodies orbit each other
Kepler's 2nd Law planet moves faster when it is near the Sun (perihelion)
Kepler's 3rd Law Law of harmonies further away a planet orbits, the longer it takes to revolve around the Sun
Aphelion point of greatest separation
Perihelion point when Earth's closest to the Sun
Kepler's 1st Law Law of Ellipses the orbits of the planets are ellipses, w/ the Sun at one focus of the ellipse
Nutation oscillatory movement of the axis of a rotating body or a wobble -occurs about 18.6 yrs
Gravity pulls the planet toward the Sun
Inertia an object's motion will not change unless a force acts on it (causes the planets to move in a straight line)
Nuclear Fusion particles "fuse" together to create energy
Nebular Theory of Formation bodies of our solar system evolved from an enormous rotating cloud called the solar nebular
Magnetosphere region above the ionosphere and extending several tons of thousands of kilometers into space -protects Earth from harmful UV radiation and cosmic rays
Photosynthesis process where plants take in solar radiation to build complex carbohydrates
Frequency # of times a wave vibrates per unit of time
Electromagnetic Spectrum shows the arrangement of electromagnetic radiation
Radiation energy that is transmitted from 1 place to another by electromagnetic waves
Created by: _xokayleighxo_
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