Why Do We Have

Phases of the Moon?

Good question!Oh, by the

way, what’s a phase?

PhasesThe changes in the

appearance of the moon’s shape during a month,

such as:

We’ve got that out of the

way!

Good!

We have phases

because the Moon revolves

around the Earth.

RevolutionThe circling of one object around another object in space. A planet revolves around the sun.  A moon revolves around a planet.

Earth revolves around the

Sun.Moon revolves around the

Earth.

Why does the Moon and Sun

appear to move in the

sky?

Rotation - When a planet or moon

turns all the way around or spins on its axis one time.

As the Moon revolves around

the Earth, we see different amounts

of the Moon’s surface in sunlight.

For Example…

For Example…

For Example…

Let’s review the eight

major phases of the Moon.

New Moon

New Moon

New Term Alert!Waxing – The Moon

appears to be getting larger;

sunlight seen on the right-hand

side.

Waxing Crescent

Waxing Crescent

First Quarter

First Quarter

New Term Alert!Gibbous – Between

half and full.

Quick Review!Click here for video

.

Waxing Gibbous

Waxing Gibbous

Full Moon

Full Moon

New Term Alert!Waning – The Moon

appears to be getting smaller; sunlight seen on

the left-hand side.

Quick Review!Click here for video

.

Waning Gibbous

Waning Gibbous

Last Quarter

Last Quarter

Waning Crescent

Waning Crescent

Quick Review!Click here for video

.

The Presentatio

n Ends Here.