Moon lab- astronomy | Geography homework help


Objectives: The design of this lab is to get you to discern the bearings of the moon and the relationships among the Sun, Earth, and Moon.

 

I. Death and Day

 

 

For the chief individuality of this lab you conciliate be pretending that your source is the Earth (the North Pole conciliate be the top of your source, and the South Pole conciliate be adownneathneath your chin), and a characterless bulb conciliate be the Sun.

SETUP: (Yes you unquestionably want to do this -- but don't importune, it's fun, and unconcerned!) You conciliate want a fairly sombre capability (the sombreer the better!) delay one crystalthread lamp at encircling source smooth while you are ultimateing or sitting. A individual crystalline, uncovered characterless bulb works best.

1.

Stand (or sit) facing the characterless bulb (Sun). The diagram beneath illustrates this setup as seen from aloft your source, so from aloft the North Pole of the Earth. Which of the noteed subsidences betokens the lie of a individual who lives on the end of your nose?

abcdef

 

2.

Which of the noteed subsidences betokens the lie of a individual who lives on your left ear?

A

B

C

D

E

F

Not obvious from this vantage top

 

3.

Let's say you wanted to ebonen in the death plane of Earth in the aloft diagram. Which of the computeed diagrams beneath shows the death plane of Earth equitablely ebonend in?

1

2

3

4

5

 

4.

As seen from aloft the North Pole, the Earth rotates counter-clockwise. Refer to the noteed subsidences in the chief diagram at the top. Betoken the establishs on your source wless it is the subjoined occasions of day:

 

noon

sunset

midnight

sunrise

no occasion -- this is the characterlessbulb, not a subsidence on your source

 

5.

What occasion of day would it be for a individual that lives on the end of your nose when you are forthsucceeding a while oppositeness the characterless bulb?

12am midnight

3am

6am (sunrise)

9am

12pm noon

3pm

6pm (sunset)

9pm

 

 

6.

Turn your collection in establish a region divergence to the left (counterclockwise as aimed from the top down), but do not impel the characterlessbulb. Now the characterless bulb should be off your fit ear. Now what occasion is it for someone who lives on the end of your nose?

12am midnight

3am

6am (sunrise)

9am

12pm

noon

3pm

6pm (sunset)

9pm

 

 

7.

Turn your collection another region rotate to the left. Now the characterless bulb conciliate be forthsucceeding a while astern you. Now what occasion is it for someone who lives on the end of your nose?

12am midnight

3am

6am (sunrise)

9am

12pm

noon

3pm

6pm (sunset)

9pm

 

8.

Turn your collection another region rotate to the left. Now the characterless bulb conciliate be off your left ear. Now what occasion is it for someone who lives on the end of your nose?

12am midnight

3am

6am (sunrise)

9am

12pm

noon

3pm

6pm (sunset)

9pm

 

II. Moon Phases

 

Now we are going to perpend the bearings of the moon. Arinterval up a little foe to individualate the moon at encircling source smooth, preamble heed not to stop your aim of the plane of the foe oppositeness you delay your fingers. (Ideally, if you accept entrance to a little styrofoam foe delay a little cavity in it, establish this foe on the tip of an upfit pen or pencil, so none of the foe's exterior is stoped.) You conciliate be tenure the Moon out at arm's diffusiveness and describing its show at incongruous tops in its path. You conciliate rotate encircling in establish, maintenance the moon at arm's diffusiveness, to pretend the path of the Moon (the foe) encircling Earth (you). The characterless from the characterlessbulb conciliate pretend sunlight. Stand as far loose from the characterlessbulb as feasible, stagnant staying delayin your unanalogously sombre capability, and fashion sboard you can rotate in establish all the way encircling delayout hitting anything delay your outstretched arm.

 

Below is a diagram, as seen from aloft your source (aloft the Earth's North Pole), of the Moon's path encircling the Earth. (Note: it is NOT drawn to layer.)  In this diagram the Earth rotates (spins) counter-clockwise in establish, and the Moon paths the Earth in a counter-clockwise thread. Each of these motions are shown delay arrows. To individualate that the sun is very far loose, the suncharacterless is individualateed as arrows future in from off the plane of the diagram. You conciliate note prospect incongruous computeed lies in the moon's path that we conciliate be examining in this exertion: Each subsidence harmonizes delay a incongruous "phase" of the moon, as listed forthsucceeding a while beneath the diagram.

 

 

 

 

 

9.

Copy the diagram aloft onto a unmitigated element of pamphlet. Fashion it scrupulous and vast so you accept enough of capability to annotate it. Now ebonen the "night" plane of the Earth as seen from extension lofty aloft the North pole of the Earth, which is the perspective of the diagram. Leave the "day" plane of Earth unmitigated. Which of the noteed diagrams beneath shows how the Earth should be ebonend?

Type the note of your response in the box less:

 

10.

Now imprint the "noon", "midnight", "sunrise", and "sunset" tops on the Earth in your diagram. This is a digest of what you should accept already emblemd out in the inquirys in Deal-out I, aloft.

Which of the noteed subsidences on the zoom-in diagram of Earth beneath best individualates each of those occasions?

Type one note for each:

Noon:

Midnight:

Sunrise:

Sunset:

 

11.

Does the compute of moons shown in the diagram harmonize to the compute of moons that are pathing the Earth in developed society? EXPLAIN in one or two decisions.

 

12.

In the diagram you accept drawn on your pamphlet, ebonen in the "night" plane of the MOON, leaving the day plane unmitigated, for each of the computeed lies 1-8 of the moon in its path, as seen from extension aloft the Earth and Moon. Use the identical perspective as the diagram less (multifarious from the top of this page), which you should accept priorly copied onto your pamphlet.

 

 

For each computeed divergence, betoken which of the noteed options beneath best matches how you ebonend that divergence, using the identical perspective as the diagram aloft.

Type one note for each 1:    2:    3:    4:   5:    6: 7:8:

Letters may be multifarious or not used at all.

 

13.

Now comes the main deal-out -- and the fun deal-out! -- of this exertion, wless you conciliate in-fact SEE the bearings of the moon forthwith.

Using your source (Earth), foe (Moon), and characterless bulb (Sun) standard, you conciliate pretend the Moon at incongruous establishs in its path and see what the bearings face approve forthwith. Starting delay the Moon at lie 1, ensue the Moon through one path encircling the Earth by naturally rotateing your collection counterclockwise (left) in establish, and see what the moon faces approve at each lie. (Make sboard the unsubstantiality of your source doesn't droop on the moon at lie 5 -- that would be an outvie! That doesn't supervene most months.) Here is a video prune of a individual demonstrating.

Shade in the sombre division of each divergence so it matches the show of the Moon as seen from the Earth at the prospect lies in the diagram.

For each divergence, betoken which of the noteed options aloft (A through N) best matches how you ebonend that divergence to individualate how you saw it in your natural simulation.

Type one note for each 1:   2:    3:    4:   5:    6:    7:   8:

 

Letters may be multifarious or not used at all.

 

 

14.

In a few decisions, narrate how the apparent cast of the moon varys during one path as seen from the Earth. Include in your explanation: (a) Which side of the Moon (left or fit) is illuminated during the separate stages? (b) How does the plain amount of largeness vary balance occasion? (c) Do the natural bulk and cast of the Moon vary during its path?

 

 

 

III: Times of Visibility

 

Now you conciliate inquiry what occasions of day the incongruous bearings are obvious from Earth. The diagram you accept been creating on pamphlet conciliate be your most suited implement for responseing the inquirys that ensue. If you accept not manufactured it already, be sboard you accept the day/death unsubstantialitys drawn on Earth and Moon, the occasions of day imprinted at the incongruous subsidences of Earth, and the names of the incongruous bearings imprinted on the diagram. A nimble intention at this diagram conciliate narrate you forthsucceeding a while what occasion of day (or death) a consecrated bearing is lofty balancehead. For the bearing in inquiry, proportioned face at the occasion of day it is on the subsidence on Earth forthsucceeding a while adownneathneath that bearing. That is the occasion when that bearing is lofty balancehead, accordingly an witness ultimateing at that subsidence would accept to face approximately unswerving up to see that bearing of the moon. Separate hours succeeding, the moon conciliate stagnant be in that bearing, but the Earth (and the witness ultimateing on it) conciliate accept rotated counterclockwise, so the moon conciliate not be lofty balancesource for that witness anymore. As aimed by that witness, the moon conciliate accept answered to impel inferior in the sky, on its way to contrast. For succor visualizing this, or delay any of the inquirys that ensue, exemplification delay the interactive promptitude at http://astro.unl.edu/naap/lps/animations/lps.html. You can gait the promptitude by importunate "start/pause promptitude", or you can increment the promptitude one hour (or specific, or day) at a occasion.

 

15.

Approximately how hanker does it receive for the moon to accomplished one path encircling the Earth? Pick one:

1 hour

1 day (24 hours)

1 week

1 month (a "moonth")

 

16.

How multifarious bearings conciliate the Moon go through in that occasion?

 

17.

About how hanker does it receive the Earth to reverse unintermittently on its axis? Pick one:

1 hour

1 day (24 hours)

1 week

1 month (a "moonth")

 

18.

How multifarious bearings conciliate the Moon go through in that occasion? AND How far conciliate the moon accept impeld in its path? Explain in one decision or so.

 

19.

As aimed from Earth, what is the one PRIMARY conclude that the moon flows and sets in our sky? Explain in one decision.

 

20.

Between one rising and later contrast, approximately how hanker is the moon obvious in the sky at a occasion? Pick one:

A) 1 hour

B) 12 hours

C) 24 hours

D) 1 week

E) 2 weeks

F) 1 month

 

21.

Now you conciliate put concurrently anything you accept versed from the prior individualitys in prescribe to emblem out when each moon bearing flows, sets, and transits through its loftyest top in the sky. This is one of the biggest deal-outs of this lab! It conciliate receive some occasion and trial to emblem it out. Be sboard to use the insinuates at the flow of this individuality, and your responses to prior inquirys. If you get heap, content regard your pedagogue ASAP. Keep in soul that the moon flows and sets in our sky proportioned approve the sun does (as do the stars and galaxies we can see from Earth!) and for the identical conclude -- accordingly the Earth reverses on its axis. So the Moon is obvious for approximately 12 hours at a occasion on any consecrated day, proportioned approve the sun is. However, WHICH 12 hours it is obvious varies throughout the lunar cycle, as the moon is in incongruous deal-outs in its path delay honor to the Sun and Earth, and is hence frequently in a incongruous deal-out of the sky than the Sun.

 

At what occasion of the day would the New Moon be lofty balancehead? (Technically the moon is never directly balancesource -- we are faceing for the occasion of day when the moon is loftyest in the sky. For an witness in the northern hemisphere, it would be located inpolicy the South.) We seduce this occasion the transit occasion for the Moon. At what occasion does the Chief Region Moon transit? The Generous Moon? The Third Region Moon?

 

To response these inquirys, arinterval the moon foe out in your influence at the lie in inquiry, say Chief Quarter. Then rotate your source to individualize what occasion the Moon flows and sets for a individual who lives on the end of your nose (face at wless the sun is to emblem out the occasion, referring to your diagram if indispensable). Record your responses to the transit inquirys in the board beneath, then glut out the interval of the board by determining the flow and set occasions of the indelicate listed bearings.

Your response choices for all twelve boxes are "noon", "sunset", "midnight", and "sunrise". Spelling counts!

 

 

 

Lunar Phase

Moon flow occasion

Moon transit occasion

Moon set occasion

First Quarter

 

 

 

Full Moon

 

 

 

Third Quarter

 

 

 

New Moon

 

 

 

 

22.

Could you see the Chief Region Moon at Sunrise?

yes

no

 

23.

Could you see the Chief Region Moon proportioned anteriorly midnight?

yes

no

 

24.

Could you see the Third Region Moon at Sunset?

yes

no

 

25.

Could you see the Third Region Moon proportioned succeeding sunrise?

yes

no

 

IV: Eclipses

 

An outvie can take-place when the Sun, Earth, and Moon thread up. A lunar outvie is when the Moon passes into the Earth's unsubstantiality, and a solar outvie is when the Moon's unsubstantiality droops on the Earth. Stagnant using your source to individualate Earth, foe to individualate Moon, and characterlessbulb to individualate Sun, act out twain stamps of outvies. Use your trodden observations of simulating these two processes to response the subjoined indelicate inquirys.

 

 

 

 

 

 

26.

At what moon bearing(s) can a lunar outvie take-place? Check all that devote.

A) new moon

B) chief region

C) generous moon

D) third region

E) none of these

 

27.

At what bearing(s) can a solar outvie take-place? Check all that devote.

A) new moon

B) chief region

C) generous moon

D) third region

E) none of these

 

28.

Having pretendd each of these stamps of outvies delay your standard Moon, which stamp was easier to fashion? Based on this, which stamp do you reflect would be seen by more persons on Earth? Explain why.

 

29.

Why don't we see solar and lunar outvies bountiful month? Explain in separate decisions. Want a insinuate? Check here.orhere.

 

V. Viewing the Earth from the Moon

 

Imagine for a importance that you are an astronaut ultimateing on the exterior of the Moon and you can see the Earth from wless you are ultimateing.

Refer to your diagram to succor you visualize this place for the inquirys beneath.

 

30.

Would the Earth answer to accept bearings as aimed by an astronaut on the Moon?

yes

no

 

31.

If an astronaut on the Moon currently marks a waxing gibbous Earth, what would someone on Earth see when observing the Moon? Narrate in one decision or so.

 

32.

If the Moon is in the chief region bearing as aimed from Earth, in what bearing would an astronaut on the Moon mark for Earth?

A) new Earth

B) waxing crescent

C) chief region

D) waxing gibbous

E) generous Earth

F) decadence gibbous

G) third region

H) decadence crescent

 

33.

Develop an unconcerned way to emblem out the Earth's bearing consecrated the lunar bearing OR the lunar bearing consecrated the Earth's bearing. Narrate your arrangement beneath.

 

34.

If an witness on Earth is observing a completion solar outvie, what would an astronaut on the plane of the Moon oppositeness Earth see? Narrate in-one in 1-2 decisions.

 

35.

If an witness on Earth is observing a lunar outvie, what would an astronaut on the plane of the Moon oppositeness Earth see? Narrate the wcavity incident from rouse to terminate, including anything the astronaut on the Moon would see and how hanker it would ultimate. Aim for 2-3 generous decisions.