1. [1 pts] which of the following statements about the microwave background is not true?
a. it has a temperature of about 3 kelvin
b. it is produced primarily by hot stars
c. it is the remnant of the radiation in the big bang
d. except for effects due to the Earth's own motion, it is virtually the same in all directions
I think it is C or D. Am I close?
Please any help would be great! Thanks!
which type of meteorite is the most likely to house amino acids and complex carbon building blocks of life?
1. [1 pts] which type of meteorite is the most likely to house amino acids and complex carbon building blocks of life?
c. carbonaceous chondrites
I have no idea which one this is, could someone please help me out?!
1. [1pts] It is likely that the density of the universe is made up mostly of
b. electromagnetic radiation
c. dark energy
d. cold dark matter
I'm not sure about this one, is it A or C? Thats what I think, but honestly I have no idea. Please help me out! Thanks!3 AnswersAstronomy & Space8 years ago
1. [1 pts] The most widely accepted explanation for the large luminosities of active galaxies is
a. multiple supernovas in the galactic core
b. accretion into a massive black hole
c. matter-antimatter annihilation
d. particles flying out of a giant black hole
I have been researching this questions and all I come up with is quasars or it turning into a massive black hole. therefore, i'm guessing the answer is b. is this correct? If anyone knows please help!
Thanks6 AnswersAstronomy & Space8 years ago
1. [1 pts] Many nearby galaxies
a. will become black holes
b. contain quasars
c. have radio lobes
d. were more active in the past
I have looked and looked for the answer, I believe it is d. that they were more active in the past. I just wanted reassurance if anyone knew if this was correct, and if it isn't please correct me!
Over what range of distances from the sun would you expect to find light gases, like hydrogen and helium, collecting together to form a significant portion of a planet?
A. anywhere beyond the orbit of Mercury
B. closer than the orbit of Jupiter
C. anywhere beyond the orbit of Jupiter
D. between the orbit of Uranus and Neptune
D. either4 AnswersAstronomy & Space8 years ago
I have two questions that i don't know how to answer,(is it like in my opinion?), please help!!
For questions 2-3 consider that often in astronomy committee are formed to decide which telescopes should be funded and built. Use the following criteria to choose which telescopes should be funded and built.
1. how effectively telescopes work at different wavelengths
2. space telescopes are much more expensive than Earth-based telescopes
3. only certain wavelengths reach the Earth's surface.
2. choose between :
a. A gamma ray wavelength telescope, located in antartica, used to look for evidence of the presence of a black whole. or
b. A visible wavelength telescope use in the search for planets outside the solar system, located on a university campus.
3. choose between :
a. An x-ray wavelength telescope, designed specifically to look at the sun, that is located near the north pole. or
b. An infrared wavelength telescope used to view supernovae, placed on a satellite in orbit around Earth.
a. magnifying power
b. resolving power.
c. ability to expose an image for long periods of time.
d. light gathering power.
e. ability to aim the telescope in different directions.
a. lower frequency and longer wavelength.
b. higher frequency and longer wavelength.
c. lower frequency and shorter wavelength.
d. higher frequency and shorter wavelength.
e. inverse frequency and reverse wavelength.
i think that it is D, but im just not sure, please help!
B. Superior Conjunction
C. Greatest Western Elongation
Please Help!4 AnswersAstronomy & Space8 years ago
according to the Universal Law Of Gravitation If You Double The Distance Between Two Objects Then the?
Gravitational force between the two will:
A. Decrease by a factor of 2
b. Increase by a factor of 2.
c. Decrease by a factor of 8.
d. Increase by a factor of 4.
E. Decrease by a factor of 4.
Please help!5 AnswersAstronomy & Space8 years ago
A. 90 B.0 C.15 or D.35