eis 2 2 scaling of the sun earth moon system n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
EIS 2.2 Scaling of the Sun, Earth, Moon System PowerPoint Presentation
Download Presentation
EIS 2.2 Scaling of the Sun, Earth, Moon System

Loading in 2 Seconds...

play fullscreen
1 / 9

EIS 2.2 Scaling of the Sun, Earth, Moon System - PowerPoint PPT Presentation


  • 154 Views
  • Uploaded on

EIS 2.2 Scaling of the Sun, Earth, Moon System. Table 1 Size & Distance Comparison of the SEM. I. Moon. Age ~ 4.3-4.5 billion years old, a bit younger than Earth When a Mars-sized rock hit Earth, debris traveled at just the right speed to stay in orbit around Earth to create the Moon.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'EIS 2.2 Scaling of the Sun, Earth, Moon System' - allie


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
i moon
I.Moon
  • Age ~ 4.3-4.5 billion years old, a bit younger than Earth
  • When a Mars-sized rock hit Earth, debris traveled at just the right speed to stay in orbit around Earth to create the Moon.
  • Has no atmosphere, so no weather.
  • Diameter ~ ¼ of Earth’s diameter
  • We only see one side of the Moon – EVER. It rotates at the same rate it revolves around Earth.
ii day
II. Day
  • Caused by Earth rotating on its axis once every 24 hours (about –slightly shorter)
  • Sun appears to rise in the east & set in the west b/c Earth rotates counter-clockwise.

EAST

WEST

http://www.learner.org/jnorth/tm/ReasonsBack.html

iii month
III. Month
  • Sidereal Month: The time it takes Moon to revolve once around Earth with respect to the background stars.
    • 27.3 days to go from Point A back to Point A
  • Synodic Month: The time it takes Moon to revolve around Earth and be in the same phase. (it’s longer b/c Earth is moving-so Moon is playing catch up to get to the same phase)
    • 29.5 days to go from, say, full Moon to full Moon

http://www.sumanasinc.com/webcontent/animations/content/sidereal.html

iv year
IV. Year
  • Caused by Earth taking ~ 365 ¼ days to revolve around the Sun.
  • We don’t add 6 hours to the clock every year. Instead we add a whole day, February 29th, every 4 years.
iv year don t need to copy
IV. Year (don’t need to copy)
  • Some exceptions to this rule are required since the duration of a solar year is slightly less than 365.25 days. In the Gregorian calendar, the calendar used by most modern countries, the following three criteria determine which years will be leap years:
iv year don t need to copy1
IV. Year (don’t need to copy)
  • Every year that is divisible by four is a leap year
  • Of those years, if it can be divided by 100, it is NOT a leap year, UNLESS
  • The year is divisible by 400. Then it IS a leap year.
  • So, years 1800, 1900, 2100, 2200, 2300, and 2500 are NOT leap years, while 1600 & 2000 ARE leap years.

http://www.timeanddate.com/date/leapyear.html

v the sun
V. The Sun
  • It is 400 times wider than Moon & 400 times farther away, so Sun & Moon appear same size in sky.
  • 1 million Earths would fit inside Sun.
  • 109 Earths fit across Sun’s diameter.

Don’t need to copy the below info

  • It is one of 200 billion stars in the Milky Way galaxy
  • It (& our solar system) revolves around center of galaxy at ½ a million miles per hour! That’s ~ 200 million years to go around once!