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30 Cards in this Set

  • Front
  • Back
Type of telescope that uses lenses
Type of telescope that uses mirrors
The process of linking seperate telescopes together so they act as one.
Three things the Earth atmosphere contains that can block clear vision through a telescope.
water vapor
dust particles
2 reasons why experiments are done on the International Space Station.
to find cures for diseases
to improve length of time humans can spend in space
An object that orbits a planet or other body larger than itself and which is not man-made
natural satellite
Part of moon that usually contains the most craters
Part of moon that is usually smooth
Valley-like structues in the maria.
Material blasted away on the moon after a crater hits.
Long trails of ejecta
What the moon lacks that leads to it having many craters
- atmosphere
- erosion causing agents (water and wind)
What the side of the moon we see has that the side we dont see lacks
greater weight
Reason why the moon affects the tides
gravitational pull
Average time it takes for a lunar month to pass
29.5 days
Beginning of the lunar month when no moon is visible
new moon
End of hte lunar month when we see the entire moon
full moon
Full moon occuring twice in the same month
blue moon
When the moon passes in front of the sun and casts a shadow on the portion of Earth
Partial blockage of the sun
partial eclipse
Full blockage of the sun
full eclipse
Three things needed for erosion to occur
water, wind, and tectonic activity
Three theories as to how the moon formed:
- a big blog broke away
- the moon formed seperately
- a large object hit Earth, breaking away pieces, which then came back together
Russian space explorer
American space explorer
7 countries associated with the ISS:
US, Russia, Japan, Brazil, Italy, Canada, and the European Union
age of the maria on the moon
between 3.1 and 3.8 billion years old
age of highlands on the moon
between 3.8 and 4.6 billion years old
device used to magnify objects far away
type of craters on the moon
impact craters