Moon and Its Phases

revolution

• the movement of one object around another.

• a sudden, radical, or complete change.

• a circular movement around a point or axis.

• a political upheaval in which the government is overthrown.

full moon

• the moon's near side is fully lit

• the moon is completely dark

• the moon is partially lit

• the moon is in a crescent phase

crater

• A large hole formed by volcanic activity

• A depression formed when objects from space crashed into the moon

• A structure built by humans for observation

• A type of cloud formation in the atmosphere

waning

• the lit portion of the moon is 'shrinking'

• the lit portion of the moon is 'growing'

• the moon is 'full'

• the moon is 'new'

rotation

• the spinning motion of an object on its axis

• the linear movement of an object in a straight line

• the change in position of an object over time

• the oscillating motion of an object back and forth

maria

• Large, dark flat areas on the moon formed when lava flowed and solidified

• Bright, cratered regions on the moon

• Small, rocky formations on the moon's surface

• Thin, icy layers found on the moon's poles

27.3 days

• the amount of time it takes for the moon to rotate and revolve

• the time it takes for the Earth to complete one rotation

• the duration of a lunar eclipse

• the time it takes for the moon to orbit the Earth twice

crescent

• phase in which less than half of the moon appears to be illuminated

• phase in which the moon is fully illuminated

• phase in which the moon is completely dark

• phase in which more than half of the moon appears to be illuminated

third quarter moon

• the moon is three quarters of the way around Earth; the left half is illuminated

• the moon is halfway around Earth; the right half is illuminated

• the moon is fully illuminated and appears as a full moon

• the moon is one quarter of the way around Earth; the right half is illuminated

new moon

• the moon's near side is completely dark because the sun's light is shining on the opposite side

• the moon is fully illuminated by the sun's light

• the moon is visible in the daytime but not at night

• the moon appears as a crescent shape in the sky