Unit 8/Sun, Earth, & Moon

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Axis
the imaginary line that passes through Earth's center and the North and South poles
Bulges
a rounded part that swells out
Crescent Moon
the phase of the moon in which only a curved edge of the moon's side that faced earth is illuminated
Equator
the imaginary center line of latitude that divides the northern and southern hemispheres
Full Moon
moon phase when the entire side facing Earth is illuminated.
Gibbous Moon
shape of the Moon that is greater than a quarter moon, but not full
Hemisphere
one half of the sphere that makes up Earth's surface
High Tide
the time at which the tide reaches its highest level
Indirect
not directly caused by or resulting from something
Lunar
relating to the moon
Neap Tide
a tide of minimum range that occurs during the first and third quarters of the moon
New Moon
a moon that is completely dark because it's unlit side is facing Earth
Radiation
the transfer of thermal energy by electromagnetic waves
Revolution
the movement of an object around another object
Rotation
a spinning motion of a planet about its axis
Seasons
caused by the tilt of Earth on its axis as it revolves around the Sun
Solar
having to do with the sun
Spring Tide
a tide of increased range that occurs two times a month, at the new and full moons.
Tilt
the tilt of the earth is at a 23.5 degree angle and it causes the seasons.
Waxing
to increase gradually in size. The illuminated part of the moon is getting bigger.
Waning
to decrease gradually in size. The illuminated part of the moon is getting smaller.

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