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Our Solar System 06: The Earth-Moon-Sun System
Transcript of Our Solar System 06: The Earth-Moon-Sun System
1.Which numbers on the blank image will have the most shading? Explain your reasoning.
2.Which numbers on the data chart will be the most illuminated by the sun? Explain your reasoning.
Use the following data table to record data from the lab. You will need to do the following:
•Draw an image of the dark and light portions of your moon-on-a-stick in the circle provided.
•Use the chart below the data table to describe your position relative to the sun.
Name the phase of the moon at each position
Why did you spin counterclockwise rather than clockwise?
I spun counterclockwise rather than clockwise because thats how the earth moon and sun rotates.
Describe exactly when a lunar and solar eclipse would occur within your model
.A Lunar and Solar eclipse would occur when the moon and the sun line up.
How would you describe the waxing versus the waning portion of the moon’s journey?
waxing is when more and more of the side of the moon visible to us is lit up by the sun.
Waning is when less of the moon (that we can see) is lighted by the sun each day
How could you change your model to indicate a moon that is at apogee and perigee?
The moon would appear to look much bigger during the perigee and it would look smaller during the apogee.
Position number Description of your position relative to the sun Name of moon phase
1, If the moon aligns just right during its orbit then we get a
Lunar eclipse. There almost in a straight line. Full Moon
2, We start to see less and less of the moon Gibbous waning
3, It’s at about a right angle with the sun and the earth Last quarter
4, The moon is almost completely covered by the sun because it on the side of earth. Waning crescent
5, The moon is about In the same direction as the sun New moon
6, The moon is on the other side of the earth Waxing crescent moon
Before completing this lab, you should understand
•how lunar phases result from different portions of the moon’s illuminated half being visible as the moon orbits Earth
•the movement of the Earth-Sun-Moon system
After doing this lab, you should be able to
•re-create a lunar cycle using simple materials
•describe the angle of the Earth-Sun-Moon system that produces each of the moon phases
•1 Styrofoam ball
or Alternately, you may obtain a similar sphere, preferably white, such as a table-tennis ball, and attach this sphere to a short piece of string.
•1 dowel rod, pencil, or other long holder for the ball
•darkened room, preferably without windows, with one lamp or source of light (the darker the room, the better you will be able to view each “phase”)
Important note: To avoid obtaining too many materials, read through the procedure for the entire lab before you begin.
1.Print a copy of a blank Earth-Sun-Moon System Data Table for recording your data. Read through the lab procedure and complete predictions 1 and 2 in the space above the data table.
2.Place a bright lamp to one side of a room. Be sure you can darken the room enough to create shadows. You should stand in the middle of the room or in a location where you can hold out your arms and spin unobstructed.
3.Carefully poke a hole into your spherical object. If you cannot obtain a Styrofoam ball, you may need to attach a string around your sphere for viewing. The string should be long enough only to allow you to freely dangle the object from your hand at a distance no greater than about 5 centimeters. Hold the sphere in your left hand.
4.Darken the room and turn your body on its axis counterclockwise, or to your left. Use the image below as a guide.