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20 terms

Unit 2: Earth Motions and Seasons

STUDY
PLAY
Insolation
incoming solar radiation
tilt
to incline or bend from a vertical position
Foucault pendulum
instrument that proved that the earth rotates
Coriolis effect
The way Earth's rotation makes winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left.
Terrestrial motion
motion of the earth
Rate of rotation
measured in DEGREES per unit of time (15 degrees/hour)
Latitude
an imaginary line around the Earth parallel to the equator
Longitude
Distance east or west of the prime meridian, measured in degrees; also called meridian
Polaris
the star that is always directly above the north pole
Rotation
the act of rotating as if on an axis
Revolution
the orbiting of one heavenly body around another.
Constellation
a configuration of stars as seen from the earth
Orbit
the (usually elliptical) path described by one celestial body in its revolution about another
Solar noon
Time of day when sun is highest in sky
Direct ray
Ray coming in at a 90 degree angle
Intensity
the amount of energy in a light or sound wave, which we perceive as brightness or loudness, as determined by the wave's amplitude
Angle of incidence
The angle at which a ray of light hits a mirror.
State of matter
(chemistry) the three traditional states of matter are solids (fixed shape and volume) and liquids (fixed volume and shaped by the container) and gases (filling the container)
Specific heat
the heat required to raise the temperature of one gram of a substance one degree centigrade
Phase change
a change from one state (solid or liquid or gas) to another without a change in chemical composition