Astronomy Stage 3


Diameter of the Sun Activity (25 goals)

Brief Overdesign of Activity: A pinnook can construct an copy in considerefficient the common way as a lens. Measuring the extent of the Sun's contemplated copy and the interspace betwixt the pinnook and the copy, you procure be efficient to rate the transection of the Sun.   

Required Items: a ally to aid you, a broom discuss (or mop discuss or hanker direct fraction of grove of common bulk), a magistrate (notefficient in centimeters), two wraps (or two 5 x 7 refutation cards), a pencil, masking tape, one stickpin.

Number of Observations deficiencyed: 1

Timing of Observations: nigh noon on a radiant glowing day

Procedure:

Preparation: Use the stickpin to terebrate a feeble nook nigh the dispose of one of the wraps. Token a dregs nigh the top of the broom discuss following a appropriateness masking tape (this is where your ally procure repose the wrap following a appropriateness the pin-hole). Token another dregs nigh the end of the broom discuss following a appropriateness masking tape (this is where you procure respect and token the copy). Carefully appraise the interspace betwixt your two still n essfficient dregss on your broom discuss. Form your appraisement to the nighest 0.1 centimeter and annals here: ___________ cm.

Observation: Caution: never scan promptly at the Sun. Gather your ally, still n essfficient broom discuss, two wraps, pencil, and then leadership beyond. Following a appropriateness your ally reposeing the wrap following a appropriateness the pinnook at the excellent still n essfficient pose and you reposeing the other wrap at the inferior still n essfficient dregs, align the broom discuss such that a feeble faded copy of the Sun's disk is seen on the inferior wrap. You may furnish it seasonefficient to really sit on the plea for this proceeding. Following a appropriateness a pencil, mindfully token the dregs of inconsistent sides of the Sun's disk. Here is a couple showing a diagram of the setup.

Calculation: From your still n essfficient wrap, mindfully appraise the extent of the contemplated copy of the Sun's disk to the nighest 0.1 centimeter and annals here: __________ cm.

Next, use the connection adown to rate the Sun's transection in kilometers. Still n ess that the interspace to the Sun is 1.5 x 10 8 km.

    Sun's transection in kilometers              copy transection in centimeters
------------------------------------- = ------------------------------------------
 Interspace to the Sun in kilometers       interspace betwixt copy and pinnook in cm

Record your rated esteem for the transection of the Sun ______________________ km

Setup Diagram

Moon Pose Activity (25 goals)

Brief Overdesign of Activity: Aggravate a end of at last three coherent evenings, you procure form mindful criticise of the Moon's transmutes in pretense and pose.

Required Items: a still n essbook to charm still n esss or form a paint (convey your red flashlight), you may charm digital photos if you craving.   

Number of Observations deficiencyed: 3

Timing of Observations: 3 coherent mystifications, environing (and following) sunset, a few days following the Moon is new. Your schoolmaster procure inconstruct you what the mismisappropriate designing days are in the vocable.

Procedure:

Choose a dregs following a appropriateness a good-natured-natured design of the western horizon from which you can distinctly respect the Sun at sunset. Since we procure be timing our criticises a few days following the Moon is new, the Moon should be conspicuous in the sky at (and for a appropriateness following) sunset. It is significant that you form all of your criticises from the common dregs and at the common space. You may scantiness to token the dregs following a appropriateness a fraction of tape to warrant you are observing from the common dregs each space.

First appraisement: This appraisement is significant. It procure be used as a intimation goal for all forthcoming appraisements. Arrive a brief future and try to furnish a appropriate intimation goal in the interspace nigh the horizon. Seem for a availed tree, fabric, rock constructation, or other goal. Pick bigwig you procure bear-in-mind and be efficient to amply spot each space you follow to respect. Token the dregs and name of your intimation goal in your still n essbook.

For Each Observation: Make a still n ess in your still n essbook encircling pretense of the Moon and its dregs in the sky. You may form a paint if you craving. Still n ess any transmutes from the former day's criticise. Be unquestioning to still n ess the dregs, bound, and space of your criticises.

Location of Observations: _______________________________________________

Observation (1) Bound ____________________Time __________ pm

  • Horizontal bent appraisement ___________ degrees
  • Vertical bent appraisement      ___________ degrees
  • Appearance _____________________________________________

Observation (2) Bound ____________________Time __________ pm

  • Horizontal bent appraisement ___________ degrees
  • Vertical bent appraisement      ___________ degrees
  • Appearance _____________________________________________

Observation (3) Bound ____________________Time __________ pm

  • Horizontal bent appraisement ___________ degrees
  • Vertical bent appraisement      ___________ degrees
  • Appearance _____________________________________________

Angular Measurement: As shown adown, you can use your fingers (or workman) to value angles. Using your appraised angles, it is feasible to mention the bent transmute in the Moon's pose from day to day. You procure deficiency to form two bent appraisements for each criticise - one mawkish bent appraisement and one perpendicular bent appraisement. Your mawkish appraisements are made from the intimation goal/goal to the Moon. Your perpendicular appraisements are made from the horizon to the Moon. 


Fully avail your arm and use the finger/workman guidelines to form your bent appraisements.

 

Questions:

Describe any transmutes in the Moon's pretense from criticise to criticise. 

Describe any transmute in Moon's pose in the sky from criticise to criticise. 


Using the methods laid out aggravate, what is your value of the daily quantity of bent transmute in the Moon's pose?

 

Star Calculate Activity (25 goals)

Brief Overdesign of Activity: Mention the enumerate of tritons conspicuous to the mere eye by collecting pattern triton calculates aggravate a feeble area of the sky.  

Required Items: a magistrate (notefficient in centimeters), one feeble cardboard tube (the dispose tube from a flatten of toilet monograph is poetical. Note: the protraction of the tube must be important than its width.), red-light flashlight (or tape a fraction of red cellophane or flexible aggravate a white-light flashlight). Using a certain white-light flashlight procure interfere following a appropriateness your mystification longing.

Number of Observations deficiencyed: 3, each at a unanalogous dregs as detailed adown.

Timing of Observations: clear, black moonless night

Procedure:

Preparation: Carefully appraise the protraction of your cardboard tube. Form your appraisement to the nighest 0.1 centimeter 

and annals here: L = _______ cm.

Next, mindfully appraise the transection of your cardboard tube. Form your appraisement to the nighest 0.1 centimeter 

and annals here: D = _______ cm.

Observation: On a conspicuous, black, moonless night, suffer a few minutes for your eyes to adjust to the black, then repose the tube up to your eye then calculate and annals the enumerate of tritons that you can see through the tube. Repose the tube constant, following a appropriateness your eye at the dispose of the tube's opportunity, during each triton calculate. Do this ten spaces, choosing purposeless areas of the sky to appraise. Be unquestioning to pattern all directions homogeneous. 

Calculation: You can value the aggregate enumerate of mere-eye tritons conspicuous in the mystification sky by using: the protraction (L) of the cardboard tube, the transection (D) of the cardboard tube, and the enumerate of tritons in your pattern (NSAMPLE). Use your appraisements and the constructula adown to value the enumerate of mere-eye tritons conspicuous in the mystification sky. For anyone zealous, a cause of this constructula can be rest at the deep of the page.

Your solution is an value of the aggregate enumerate of tritons in the mystification sky that are conspicuous to the mere eye at this detail dregs.

Follow this proceeding three spaces: unintermittently in a city, unintermittently in a pastoral dregs detached from city lights and unintermittently in another dregs. In the end, you should have three unanalogous estimations of tritons for three unanalogous dregss.  Form unquestioning you annals the dregss, bounds, and spaces of your three sets of criticises on the proximate page. 

Star Calculate Observations and Data

Location of Criticise (1): ____________________________________________

Date ____________________Time __________ pm

Total Enumerate of Pattern Stars Observed ___________

Calculated Enumerate of Conspicuous Stars ___________


Location of Criticise (2): ____________________________________________

Date ____________________Time __________ pm

Total Enumerate of Pattern Stars Observed ___________

Calculated Enumerate of Conspicuous Stars ___________

Location of Criticise (3): ____________________________________________

Date ____________________Time __________ pm

Total Enumerate of Pattern Stars Observed ___________

 

Calculated Enumerate of Conspicuous Stars _________________


Question: Discuss feasible reasons why your respectd enumerate of tritons authority be unanalogous at each of your criticise dregss. 

If you scantiness to perceive where the constructula follows from.... abide lection adown...

 

Constellation Activity (25 goals)

Brief Overdesign of Activity: Lodge five constellations.  

Required Items: Night Sky Planisphere, red-light flashlight (or tape a fraction of red cellophane or flexible aggravate a white-light flashlight). Using a certain white-light flashlight procure interfere following a appropriateness your mystification longing.

Number of Observations deficiencyed: 1

Timing of Observations: a clear, black mystification when the moon is not protuberant (ideally)

Use your Mystification Sky Planisphere to fulfill any five constellations in the mystification sky. If you are in the Northern Hemisphere, besides furnish the Big Dipper and the North Triton (Polaris). Submit the names of the five constellations you rest, picture how you rest Polaris, and criticise encircling how not-difficult (or hardened) it was to use the triton chart to lodge constellations. Do the constellations in the sky seem relish the ones on the triton chart? If not, how do they dissent?