Red and orange stars are found evenly spread throughout the galactic disk, but blue stars are typically found ________
A) only in the central bulge B) also evenly spread throughout the galactic disk
C) only in or near star-forming clouds D) in the halo
C
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Which gases in Earth's atmosphere strongly absorb ultraviolet radiation?
A. water vapor and carbon dioxide B. ozone and oxygen C. nitrogen and argon D. None of these choices are correct.
What is the heat needed to heat 150 g of water from
to 
(specific heat of water = 4186 J/kg
A. 37.2 kJ B. 44.6 kJ C. 56.5 kJ D. 68.2 kJ E. 75.1 kJ
What does angular resolution measure?
A) the angular size of the smallest features that the telescope can see B) the brightness of an image C) the size of an image D) the number of electromagnetic waves captured by an image
Which element represented most of the atoms in the early Universe?
a. helium b. hydrogen c. oxygen d. carbon e. nitrogen