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Home Q & A Board Science-Related Homework Help Physics Astronomy
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asabino asabino
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6 years ago
Giant molecular cloud complexes are located in spiral arms.
 
  Indicate whether the statement is true or false

Question 2

Earth possesses few visible craters and the moon possesses many. This is because
 
  a. Earth formed later than the moon and, therefore hasn't encountered as many meteoroids.
  b. the moon doesn't have an atmosphere that could burn up many of the meteorites before impacting.
  c. erosion and plate tectonics have slowly removed evidence of past cratering on Earth.
  d. all of the above
  e. only b and c

Question 3

Spiral tracers tend to be old, luminous stars.
 
  Indicate whether the statement is true or false

Question 4

Which of these gases is most responsible for the greenhouse effect on Earth?
 
  a. oxygen (O2)
  b. nitrogen (N2)
  c. carbon dioxide (CO2)
  d. ozone (O3)
  e. ammonia (NH3)

Question 5

The disk of the galaxy is older than the halo.
 
  Indicate whether the statement is true or false
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hbirk8hbirk8
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6 years ago
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asabino Author
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#2
6 years ago
Thank you Jesus, my teacher is bad at explaining
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#3
6 years ago
Praise the LORD ha ha No worries
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