Study Guides (248,531)
Canada (121,614)
Astronomy (120)

Astronomy 2021A/B Final: cheatsheet(ch10+11)

3 Pages
Unlock Document

Astronomy 2021A/B
Martin Zinke- Allmang

1) What is the definition of a stars habitable zone?D) where liquid water can be stable on the surface of a suitable planet2) A habitable zoneA) exists around all stars3) Over time, as they age, the habitable zone of stars like our SunD) move outward 4) Europa is located outside C) Europa is tidally heated 5) The Moon is in the habitable..C) the Moon is too small to retain 6) Which of surface habitability and subsurface habitability correct?B) surface habitability can be determined remotely by studying reflected starlight from a planet, while determining subsurface habitability would require a robotic space probe7) Apart from its distance from its parent starB) the size of the planet8) Theoretical calculations suggest A) have thick, hydrogen atmospheres9) Based solely on its distance from the Sun B) warmer than the Earth10) If Venus had the same A) only be slightly warmer11) Most of the carbon dioxide on Venus C) is present in its atmosphere12) Most of the carbon dioxide on the EarthA) is locked up in carbonate rocks13) When the Earth first formed A) it condensed into the oceans14) When Venus first formedA) it was destroyed in the atmosphere by ultraviolet light from the Sun15) Which of active volcanism on Venus B) the presence of sulfuric C) the detection from orbit 16)Evidence for the loss of water.D)observation of an excess17) If the Earth were to be moved to where Venus is today D) the oceans would evaporate and carbonate rocks18) Venus is locatedD) outside the Suns habitable zone19) The inner boundary of the Sun A) between the orbits of the Earth and Venus20) Around 4 billion D) the Sun was dimmer21) If life is present on Venus today,B) found in the atmosphere22) The case of Venus C) distance from the Sun23) The case of Mars A) planetary size24) A star more luminous C) wider and farther from the star 25) A star less luminous A) narrower and closer26) Stars much more luminousB)wider.but lifetimes too short for life to appear27)Stars much less luminousD)narrower but much longer lifetimes28) Although stars much more luminousA) have extremely short29)Although low luminosity starsB) have very narrow habitable zones30) If distance from the SunA) the Moon31) The minimum size A) plate tectonics to be present32) Mars currently lacks C) its small size33) What is a possible reason why Venus does not have plate tectonics?A) it is too smallB) its crust is too dry and stiff to break34) Which is NOT a critical factorC) presence of a magnetic field35) Which..crucial factor in enabling habitability on the surface of a rocky planet?A) sizeB) distance from parent starC) presence of an atmosphere36)What role atmosphere playA) it exerts a pressureB) it protects the surface37) What can contributeA) thermal escapeB) large impactsC) solar wind stripping38) The moist greenhouse effect refers toA) the warming process39) If we allow for moisture lossA) just inside the orbit of the Earth40) If we allow for a simple runaway..C) roughly half way between the orbits of the Earth and Venus41) If Mars had a thicker D) just beyond the orbit of Mars42) When the Sun was youngerA) narrower and closer to the Sun43) Compared to today, in the future, the SunD) wider and farther from the Sun44) Why does the Sun brighten with time?B) as hydrogen by shrinking and heating up45) The range of distances that has remained habitable for the entire duration of the Suns lifetime is referred to as theA) continuously habitable zone46) According to conservative estimates, the end of habitability of Earth will come aboutD) a billion years from now47) According to optimistic estimates, the end of habitability of Earth will come aboutC) 3 to 4 billion years from now48) When the Sun runs out of D) the Earth will experience a runaway greenhouse effect followed by the total loss of its atmosphere49) When the Sun becomes a red giantB) life will probably not be able to survive even beneath the surface50) When the Sun ejects B) Earth will be destroyed51) The recent gradual rise..A) global warming52) Today, global average temperatures are estimated usingA) orbiting satellitesB) weather stationsC) water temperature measurements by ships53) Over the last century, global average temperatures haveA) risen by about 0.85C (1.5F)54) Evidence that the recent rise in carbon dioxideD) all of these55) As the average surface temp rises..A) the Northern hemisphere..56) Longterm data..B) ice cores
More Less

Related notes for Astronomy 2021A/B

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.