Which of the following lists the phases of the interstellar medium in order,from densest to least dense?
A) molecular clouds, H I clouds, H II regions, warm interstellar medium, coronal gas
B) H II regions, warm interstellar gas, coronal gas, H I clouds, molecular gas
C) molecular clouds, H II regions, coronal gas, warm interstellar gas, H I clouds
D) H I clouds, molecular clouds, warm interstellar medium, H II regions, H I clouds, coronal gas
Correct Answer:
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Q1: How do astronomers measure the properties of
Q3: Giant molecular clouds are typically:
A) spherical.
B) hierarchical,
Q4: Which of the following adjectives best describes
Q5: Which of the following is an important
Q6: What is the wavelength of radiation produced
Q7: An interstellar gas cloud has a temperature
Q8: A gas cloud is in pressure equilibrium
Q9: How do dust particles affect the formation
Q10: How are the properties of the densest
Q11: An interstellar gas cloud with a density
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