Starter: Glue Starter here

Practice: Notes

171 172 Moon Phases and Eclipses

2/5/2013Application: Moon Calendar

Connection: If the moon is a waning crescent today, what phase will it be in on Saturday?

Exit : Why isn’t the full moon really a full moon?

Moon Phases and Eclipses

2/2/9/20152/2/9/2015

February 9, 2015AGENDA

Objective 8.7 B Demonstrate and predict the sequence of events in the lunar cycle by reading and writing during notes and creating graphic organizer activity.

1. Quiz

2. Notes

3. Graphic Organizer

4. Exit

Date Lecture/ Activity/ Lab Page

Table of Contents1/26 Wind, Climate, and Ocean Currents 155-1561/27 Convection and Ocean Currents 157-158 1/28 Fronts and Air Masses 159-160 1/29 Pressure and Atmospheric Movement 161-1622/2 Weather Walk Lab 163-1642/3 Severe Weather and Precipitation 165-1662/5 Rotation, Revolution, and seasons 167-1682/6 Seasons Lab 169-1702/5 Moon Phases and Eclipses 171-172

The Moon Cycle and Eclipses

Lunar Cycle

It takes the moon 29.5 days to orbit once around the Earth.

Read from right to left

Lunar Cycle Although this cycle is a continuous

process, there are eight distinct, traditionally recognized stages, called phases. New moonWaxing crescentFirst quarterWaxing gibbousFull moonWaning gibbousLast quarterWaning crescent

New Moon: 1st StageCharacteristics– The side that is facing the Earth is not lit up by the Sun. (except during a solar eclipse).

Time Line: This is the starting point of the cycle.

Looks Like:

Characteristics– A small part (less

than ½) of moon is lit up at this point.

The part that is lit up is slowly getting bigger.

Time Line: approximately 3.7 days to occur after the New Moon.

Waxing Crescent :2nd stage

Looks Like:

Characteristics– ½ of the moon is

lit up by the sun at this point.

The part that is lit up is slowly getting bigger.

Time Line: This is occurs in about 7.4 days

First Quarter: 3rd stage

Looks Like:

Characteristics– The Moon

appears to be more than one-half, illuminated by direct sunlight.

The part that is lit is slowly increasing.

Time Line: This is occurs in about 11.1 days.

Waxing Gibbous : 4th stage

Looks Like:

Characteristics– The side of the moon

that is lit up by the sun is facing the Earth.

The entire moon is lit up at this point.

Time Line: This is occurs in approximately 14.8 days

Full Moon : 5th stage

Looks Like:

Characteristics– The moon is not

quite lit up all the way by sunlight.

The part of the moon that is lit is slowly getting smaller.

Time Line: This is occurs in about 18.5days

Waning Gibbous : 6th stage

Looks Like:

Characteristics– ½ of the moon is

lit up by the sun at this point.

The part that is lit up is slowly decreasing.

Time Line: This is occurs in about 22.2days

Last Quarter : 7th stage

Looks Like:

Characteristics– Less than ½ of

the moon is lit up at this point.

The part that is lit up is slowly decreasing.

Time Line: This is occurs in about 25.9 days

Waning Crescent : 8th stage

Looks Like:

Eclipse-(Greek: ecleipo='cease to exist') An eclipse occurs:

when a planet is between the Sun and moon.

Or when a moon is between the Sun and a planet.

The result of an eclipse is that the Sun’s light is blocked and a shadow is cast.

Types of Eclipses In a solar eclipse,

the new moon moves between the Earth and the Sun, blocking a part of the Sun's light.

A lunar eclipse happens when the Earth moves between the Sun and the full moon, blocking part of the Sun's light from reaching the moon.

Lunar Eclipse

Solar Eclipse

Earth casts a cone of shadow, and if the moon happens to move into this cone, we have aLunar eclipse.

Shadows: 1.The darker cone, or umbra (Latin for

Shadow), where no sunlight reaches (total eclipse),

2.The lighter region, the penumbra (Latin for nearly shadow), where only some of the sunlight is blocked (partial eclipse).

The Cause for the Shadow

Solar Eclipse

The New Moon moves between the Earth and Sun such that the Sun is in part or completely covered.

In a solar eclipse some part of the Moon’s shadow falls on the Earth’s surface and an eclipse of the Sun is seen from that area.

When the Moon and Sun are in a perfect line, it is called a total eclipse.

Lunar Eclipses A lunar eclipse

happens when the Earth moves between the Sun and the full moon, blocking part of the Sun's light from reaching the moon.

During a lunar eclipse, you will see the Earth's shadow on the moon.

Starter: Glue Starter here

Practice: Notes

171 172 Moon Phases and Eclipses

2/5/2013Application: Moon Calendar

Connection: If the moon is a waning crescent today, what phase will it be in on Saturday?

Exit : Why isn’t the full moon really a full moon?

Moon Phases and Eclipses

2/2/9/20152/2/9/2015