Seasons, Moon phases, Moon Phases

Equinox

Equinox

Two times of year when the day and night lengths are about 12 hours. Equal day and night.

Vernal equinox

This occurs in March and marks the beginning of spring in North America. Also called spring equinox

Autumnal equinox

This occurs in September and marks the beginning of fall in North America. Also called fall equinox

Solstice

Two times of year when the day or night lengths are at their longest or shortest. The Earth is either tilted towards or away from the sun at 23.5 degrees

Winter Solstice

This occurs in December and marks the beginning of winter in the Northern Hemisphere. This is also the shortest day of the year in the NH

Summer Solstice

This occurs in June and marks the beginning of summer in the Northern Hemisphere. This is also the longest day of the year in the NH

Leap Year

Because the year has 365 1/4 days a year we add on day to the calendar every four years we call this ______.

The days are shorter and you receive indirect light from the sun causing cooler temperatures.

Why are winter temperatures lower (cold)?

Summer

The season experienced when the earth's axis is tilted TOWARD the sun

Winter

The season experienced when the earth's axis is tilted AWAY from the sun

Spring

What season is position 1 in the Northern Hemisphere?

Fall

What season is position 3 in the Northern Hemisphere?

axis

An imaginary line that passes through Earth's center and the North and South poles, about which Earth rotates

crescent

Moon phase in which less than half of the Moon appears to be illuminated.

full moon

moon phase when the entire side facing Earth is illuminated.

new moon

Moon phase that occurs when the Moon is between Earth and the Sun, at which point the Moon cannot be seen because its lighted half is facing the Sun and its dark side faces Earth.

revolve

To move in a eclipse around another body

rotate

to spin on an axis

tide

The periodic rise and fall of the level of water in the ocean

wane

To decrease gradually

wax

to become larger

Rotation

The spinning of an object on a fixed point; causes day and night

Tilt

Leaning toward or away from another object

Orbit

The path an object takes when revolving around another object

Hemisphere

A half of a sphere

Equator

an imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°.

Seasons

The result of Earth's axis and the yearly revolution of the Earth around the sun

23.5

The angle which the earth's axis is tilted

Spring and Fall

The seasons in which all locations on earth are receiving thaesame amount of daylight hours

moon phases

The changing appearances of the Moon as seen from Earth

new moon

Moon phase that occurs when the Moon is between Earth and the Sun, at which point the Moon cannot be seen because its lighted half is facing the Sun and its dark side faces Earth.

first quarter moon

The moon is a quarter of the way around the Earth. You can see the right half of the moon.

full moon

the phase of the moon in which we see the entire moon lighted, and it appears bright and round

third quarter moon

The phase of the moon when it is three-quarters of the way through its orbit, and we see half of the moon lighted

crescent moon

the phase of the moon in which only a curved edge of the moon's side that faced earth is illuminated, lasts about 6 days, can be a small sliver or almost a quarter moon.

gibbous moon

when the size of the illuminated portion of the moon is greater than half but not a full moon, lasts about 6 days can be almost all white or just a little more than 1/2 white

waxing moon

When the Moon appears to get bigger

waning moon

When the Moon appears to get smaller

New Moon

Waxing Crescent

First Quarter

Waxing Gibbous

Full Moon

Waning Gibbous

Third Quarter

Waning Crescent

Lunar Eclipse

Lunar or Solar Eclipse?

Solar Eclipse

Lunar or Solar Eclipse?

29.5 days

How long does it take for the moon to complete a set of phases?

Orbit

The path that an object follows as it travels around another object in space.

rotate

to turn around and around

revolve

to keep turning in a circle or orbit around a central point or object.

axis

an imaginary line through the middle of an object, around which the object spins.