22C Flashcards
The earth’s path around the sun is called its?
Orbit
It takes the earth ___ years to completely orbit the sun?
One Year
The sun is an almost perfect ball made out of?
Plasma
The sun has a mass of about _____ times bigger than the earth?
330,000
About 3/4 of the sun’s mass consists of?
Hydrogen
The spinning of the earth is called its?
Rotation
The earth _____ and moves around the sun?
Spins
the moons point is called?
perigee
Observing the planets, moon, and stars from a moving, rotating earth is called?
Apparent Motions
Moon blocks some of the sun’s light from reaching earth
Solar Eclipse
The earth blocks the suns light that normally shines on the moon
Lunar Eclipse
Being shaped like a ring
Annular
When the moon is closest
Perigree
When the moon is farthest
Apogee
Oscillating or balancing, like a scale
Libration
Moon’s light growing larger
Waxing
Moon’s like getting smaller
Waning
Lunar cycle begins as the
New Moon
The shape and change of the lighted face of the moon
Lunar Phase
Line between the light and dark side of an astronomical body is called the
Terminator
Bulge in the terminator before or after quarter moon
Gibbous
How long is Lunar or Synodic month?
29.53 days
Moon to orbit earth in 27.3 days?
Sidereal month