The Phases of the Moon - PowerPoint PPT Presentation

Loading...

PPT – The Phases of the Moon PowerPoint presentation | free to download - id: 8081d1-YzhiO



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

The Phases of the Moon

Description:

The Phases of the Moon Section 25.2 http://outreach.physics.utah.edu/Labs/LunarPhases/lunar_phases_main.html#part2 – PowerPoint PPT presentation

Number of Views:135
Avg rating:3.0/5.0
Slides: 32
Provided by: JamieE154
Learn more at: http://www.sd308.org
Category:
Tags: moon | phases

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: The Phases of the Moon


1
The Phases of the Moon
  • Section 25.2

http//outreach.physics.utah.edu/Labs/LunarPhases/
lunar_phases_main.htmlpart2
2
Bell work
  • What PHASE was the moon last night???

http//www.nightskyobserver.com/the-sky-this-month
/
3
  • It has been since ______that the Apollo Mission
    and Neil Armstrong walked on the Moon.
  • The Moon is still the ONLY other celestial body
    (besides Earth) that humans have walked on.

4
Luna our Moon
  • Moon is our nearest neighbor
  • 2nd brightest object in the sky (Whats the
    brightest?)
  • For a planet to have one large moon is unusual.
  • Galileo first observed the Moon with a telescope
    in 1609.
  • What he saw conflicted with the existing theories
    (made of cheese?!)
  • He noticed that it had a rough surface, craters,
    mountains, valleys, and what at the time seemed
    to be seas (maria).
  • He concluded that the Moon was not all that
    different from Earth.
  • This took away the mystery of the Moon

5
Cold, Hard Facts pg. 557
  • The Moons diameter of 2,160 miles at its
    equator.
  • 1/4th size of Earth
  • 1/6th Earths mass
  • Density 3.3 g/cc (Earths is about 5.0 g/cc)
  • If Earth were the size of your head, the orbiting
    Moon would be the size of a tennis ball 30 feet
    away.

6
Cold, Hard Facts
  • The surface gravity on the Moon is 1/6 that on
    Earth.
  • This is why astronauts can jump as they do.
  • If you weigh 160 lbs. on Earth, you would weigh
    _________lbs on the Moon.

http//www.youtube.com/watch?vOSJlL4wqLGofeature
related
7
A Cold, Hard Place
  • The Moon is not massive enough to hold on to an
    atmosphere, so there is no atmosphere.
  • One of the first observations you will make about
    the moon is all of the craters on its surface.
  • Most craters are the result of asteroid and
    meteoroid impacts.

8
Is There Life?
  • The Moon is apparently as dead geologically as
    it is biologically.
  • There is no internal heat, magma, plate
    tectonics.
  • Instruments left behind on the Moon have recorded
    only tiny amounts of seismic activity.

9
Why do we see the moon with different amounts of
its surface lit during a month?
10
POM Chart (in your note book)
PHENOMENON What did you observe? What evidence do you have? OBJECTS Define the system. What objects are interacting? MOTION Describe the motion that in the model that explains your observations

11
What Phase of the Moon?
  • Waning Waning
  • Gibbous Crescent

12
(No Transcript)
13
Phases of the Moon modeling activity
14
Phases of the Moon the daily changes in the
moons appearance as viewed from Earth
Position 1 Day 1
  • All but invisible in the sky.
  • Moon and sun are lined-up in the same direction
    as seen from Earth.
  • The Sun is behind the moon.

15
Phases of the Moon
Position 2
  • Day 4
  • Waxing crescent
  • moon
  • (wax on)
  • The moon appears
  • to grow brighter
  • each night

The moon gets brighter going to the LEFT
http//youtu.be/h9rWQGtznW0?t2m37s
16
Phases of the Moon
  • 7 days old, the Moon is at its first quarter.
  • This is the optimum night to look at the Moon.
  • Lunar features are in their most deeply shadowed
    relief.

Position 3
17
Phases of the moon
  • Position 4
  • 10 days old
  • As the Moon enters is waxing gibbous phase beyond
    first quarter,
  • It is nearly full, and it becomes very bright.

18
Phases of the moon
Position 5
  • Full moon
  • 14 days old
  • Sun and moon are at opposite sides of the Earth.
  • The moon is brightest and shines by reflected
    sunlight

19
Phases of the Moon
Position 6
  • 18 days old
  • Waning (away)
  • Slowly getting darker.
  • Waning gibbous

20
Phases of the moon
Position 7
  • 22 days old
  • 3rd quarter moon
  • It continues to wane
  • The Apennine Mountains are clearly visible.
  • These were the mountains that Galileo studied the
    most intensely.

21
Phases of the moon
  • 26 days old
  • Waning crescent
  • moon

Position 8
22
Phases of the moon
  • Day 28
  • New moon again
  • All but invisible

23
Quiz! Name that phase!
Waxing or Waning? Phase..
Crescent
24
Name that phase!
Waxing or Waning? Phase..
Gibbous
25
Name that phase!
Waxing or Waning? Phase..
1st Quarter
26
Name that phase!
27
Day_____
Moon Phases
Text page 563
Day_____
Day_____
Day_____
Day_____
New Moon
Day_____
Day_____
28
How did we get our Moon?
  • We still dont know with certainty how the Moon
    was formed.
  • There are four theories of how the Moon was
    formed.
  • 1. The oldest theory the Moon was originally
    part of Earth, due to Earths fast rotation it
    and was spun off.
  • Theory was rejected because the Earth could not
    have spun quickly enough.

29
  • 2. Another theory holds that the Moon formed
    separately from Earth around the same time (4.6
    bya) and out of the same stuff.
  • This was rejected after lunar rock samples
    revealed different stuff than Earth.

3. The third theory is that the Moon formed
independently and it was pulled in by Earths
gravity when it passed too close.
30
  • 4. The final, and favored, theory is known as the
    impact theory.
  • States that a very large object (roughly the size
    of Mars) collided with Earth 4.5 bya ago when it
    was still forming.
  • The debris from the Earth and the colliding
    object combined into an object with a stable
    orbit.

31
What if there was no moon?
  • Suggest 2 ramifications with explanations.
  • Discovery Video If We Had No Moon
  • If we had no moon part 1
  • If we had no mooon part 2
  • BBC Video Do We Really Need the Moon?
  • Do we really need the moon
About PowerShow.com