A) the birth of the universe
B) the formation of our Galaxy
C) the formation of the Sun
D) the formation of life on Earth
E) you can't fool me, all of the above happened at roughly the same time
Correct Answer
verified
Correct Answer
verified
A) we have good evidence that life exists on many planets around other stars
B) we only have evidence that life exists around three other stars
C) the government has evidence (which it is not releasing) that there is at least one other intelligent life form on a planet orbiting another star
D) while we have evidence of the building blocks of life elsewhere in the universe, we have no definite evidence about life around other stars at this time
E) there is no evidence for intelligent life anywhere, even on Earth
Section 30.2: Astrobiology
Correct Answer
verified
Correct Answer
verified
A) the presence of a large moon around the Earth
B) free oxygen in the Earth's atmosphere
C) the abundance of micro-organisms in the deserts of the Earth
D) the fact that most of our atmosphere is made of nitrogen
E) ice in the Earth's polar caps
Section 30.4: The Search for Extraterrestrial Intelligence
Correct Answer
verified
Correct Answer
verified
A) Project Phoenix
B) Project Ozma
C) Project Serendip
D) Project META
E) Project ASTRO
Correct Answer
verified
Correct Answer
verified
A) the Hubble Space Telescope was put into orbit
B) radio and TV signals have gone silent as much of the US adopts cable
C) astronomers have developed adaptive optics to deal with the twinkling of the stars
D) astronomers have built radio telescopes that can pick up the 3-degree microwave background
E) we have developed the ability to make laser pulses that are briefly brighter than the Sun
Correct Answer
verified
Correct Answer
verified
A) the idea that Copernicus was the greatest astronomer who ever lived and the model for astronomers ever since
B) the idea that everything in the universe revolves around the Sun
C) the idea that everything in the universe rotates and revolves (i.e. has angular momentum)
D) the idea that there is nothing special about our place in the universe
E) the idea that the universe is expanding in every direction that we look
Correct Answer
verified
Correct Answer
verified
A) we don't know what star might have planets with intelligent life
B) we don't know what channel they may be using to send messages
C) we don't know whether the signal is always on (continuous) or only for a brief time every cycle
D) we don't know how to receive signals in the wavelength range that is the most likely for interstellar communications
E) we don't know how other civilizations might encode messages in the carrier wave they send
Correct Answer
verified
Correct Answer
verified
A) much larger (wider) than the Sun's
B) much closer to the star than the Sun's
C) in about the same place as the Sun's asteroid belt
D) much more narrow (small) than the diameter of any planet
E) the source of all the UFO's that have been reported by UFO believers on Earth
Correct Answer
verified
Correct Answer
verified
A) we have the way in which life on Earth and life on Mars resemble each other
B) life could, for the first time, reproduce (make copies of itself)
C) we have the common ancestor that gave rise to every species of life now on Earth
D) life could extract chemical energy from sunlight
E) life did not have to evolve any further
Correct Answer
verified
Correct Answer
verified
A) 40 years
B) 80 years
C) 400 years
D) 20 years
E) it depends on the speed of the radio wave; so it can't be calculated from the information given
Correct Answer
verified
Correct Answer
verified
A) Enceladus has a strong magnetic field
B) Enceladus has rivers of liquid water flowing on its surface
C) There are radio signals coming from Enceladus which indicate they might be made by intelligent life
D) Enceladus has a thick atmosphere with a significant amount of oxygen
E) There are plumes of salty vapor coming from cracks in Enceladus' surface
Correct Answer
verified
Correct Answer
verified
A) the discovery of a form of silicon-based life in the volcanic vents of Venus
B) the discovery of planets around thousands of stars in our Galaxy
C) the discovery of a black hole approaching our solar system at rapid speed
D) the discovery of many key building blocks of life in a crater near the polar region of the Moon
E) the discovery of a spaceship, built by an alien civilization, that crashed in New Mexico
Correct Answer
verified
Correct Answer
verified
A) carbon dioxide
B) oxygen
C) water vapor
D) methane
E) DNA
Correct Answer
verified
Correct Answer
verified
A) has liquid water on it; no other world in our solar system has water
B) has temperatures in some places where chemical change is possible
C) has a solid surface
D) has a biosphere on its surface where photosynthesis can take place
E) has the chemical ingredients from which life might begin
Correct Answer
verified
Correct Answer
verified
A) Voyager 1
B) Voyager 2
C) Galileo
D) Pioneer 10
E) Pioneer 11
Correct Answer
verified
Correct Answer
verified
A) radio waves
B) x-rays
C) ultra-violet
D) infrared
E) gamma rays
Correct Answer
verified
Correct Answer
verified
Showing 21 - 36 of 36
Related Exams