Earth, Sun, Moon Systems

rotation

rotation

Object's spinning motion about its own axis. Creates day and night on Earth

revolution

Objects' orbital motion around another object. Creates seasons on Earth

lunar phases

eight monthly changes of the shape of the illuminated portion of the Moon as seen by an observer on Earth.

28 days

length of one lunar cycle

right

side of the moon that illuminates first

new moon

when the moon is closest to the sun, completely dark

full moon

when the moon is furthest from the sun, completely illuminated, two weeks after a new moon

waxing

visible portion of the Moon becomes larger, happens after new moon

waning

visible portion of the Moon becomes smaller, happens after full moon

23.5 degrees

The tilt of the Earth's axis

summer

when the tilt of the Earth is toward the sun in a particular hemisphere, causing longer days

winter

when the tilt of the Earth is away from the sun in a particular hemisphere, causing shorter days

equinox

Equal amounts of daylight and night time (happens twice a year Spring and Fall)

solstice

the start of new seasons and the days with the most or least amount of sunlight

summer solstice

Day with the most sunlight, (longest day of the year), June 21

winter solstice

shortest day of the year (least amount of sunlight), December 21

eclipse

the blocking or darkening of a celestial body (such as the Sun or the Moon)

penumbra

the lighter part of a shadow where light is partially blocked, partial shadow

umbra

The darkest part of a shadow where light is fully blocked, full shadow

lunar eclipse

full moon passes into Earth's shadow causing the Moon to appear red. (sun, earth, moon), lasts 1 - 3 1/2 hours

solar eclipse

moon passes between Earth & Sun, and covers all or part of the sun. (sun, moon, earth), lasts less than 12 minutes

Phases of the moon

new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter, waning crescent

Orbit

A path described by one body in its revolution about, another

Type of eclipse you would see during a full and new moon

Full - Lunar and New - Solar

People see a lunar eclipse more often than a solar eclipse

Lunar eclipses last longer, solar would have to be in a specific place to see it, lunar happens more often and is easier to look at