final exam unit 11 Flashcards
Which of the following statements about SETI is TRUE?
a.
So far, Project Phoenix has received no detections of confirmed extraterrestrial civilizations
b.
SETI plans to broadcast a greeting, via radio-waves, to all of the solar systems which the Kepler mission identifies as having Earth-like planets
c.
It stands for Satellite Explorer for Terrestrial Inhabitants
d.
The mission of SETI’s Project Phoenix is to listen for infrared emissions from other solar systems in order to detect extraterrestrial civilizations
a.
So far, Project Phoenix has received no detections of confirmed extraterrestrial civilizations
Why does the Moon have more craters on the far side as compared to the near side?
a.
The near side is protected by Earth’s gravity
b.
The near side has more craters than the far side
c.
The near side was resurfaced by lava
d.
The far side is more massive than the near side, attracting more impacts
e.
The near side is harder to hit, because it’s pointed towards Earth
c.
The near side was resurfaced by lava
Which of the following statements about Earth’s early missions to space is TRUE?
a.
The first human on the Moon was Yuri Gagarin from the Soviet Union
b.
The first photographs of Earth taken from space were obtained by a camera attached to a rocket
c.
The first human into space was launched in a craft which entered space, then deployed retractable wings and wheels so that the human pilot could steer the craft back to Earth and land it on an airfield
d.
The Mercury 7 was the first successful mission to another planet
e.
The first human-made object launched into space was a canister of fruit flies
b.
The first photographs of Earth taken from space were obtained by a camera attached to a rocket
Which of the following statements about the Habitable Zone is FALSE?
a.
In the past, when the Sun was hotter, Mars would have been in the Sun’s Habitable Zone
b.
At present, planet Earth is in the Sun’s Habitable Zone
c.
Due to the tilt of Jupiter’s orbit, Europa occasionally passes through the Sun’s Habitable Zone, which may explain its subsurface ocean
d.
The Sun’s Habitable Zone would be closer to the Sun if the Sun were less massive
c.
Due to the tilt of Jupiter’s orbit, Europa occasionally passes through the Sun’s Habitable Zone, which may explain its subsurface ocean
Which of the following statements about our attempts to communicate with extraterrestrials is FALSE?
a.
Using the Drake Equation, SETI has been able to accurately calculate the number of communicating civilizations in our galaxy
b.
The Arecibo radio dish was used to send a radio message about Earth and humans to a star cluster
c.
The Pioneer spacecrafts each contain a plaque with engraved information about Earth and humans
d.
Voyager 1 carries a record containing sounds of Earth and is currently approaching the boundary of our solar system
a.
Using the Drake Equation, SETI has been able to accurately calculate the number of communicating civilizations in our galaxy
Which of the following statements about life in our solar system is FALSE?
a.
Human-borne bacteria were found to have survived the harsh conditions on the lunar surface
b.
Extremophiles have been found surviving in the high-temperature regions of Earth’s oceans
c.
Earth-like life on the surface of Mars today is unlikely due to its thin atmosphere
d.
Extremophiles have been found surviving in the icy surface of both Antarctica and Europa
d.
Extremophiles have been found surviving in the icy surface of both Antarctica and Europa
What is the ‘Habitable Zone’?
a.
The range of distances from a star within which a planetesimal can coalesce enough material to become spherical under its own gravity
b.
The range of distances from a star within which a planet can sustain Oxygen in its atmosphere
c.
The range of distances from a star within which Carbon-based molecules will neither freeze nor vaporize
d.
The range of distances from a star within which a planet can sustain liquid water
e.
The range of distances from a star within which a planet’s gravity can maintain an atmosphere
d.
The range of distances from a star within which a planet can sustain liquid water
What was the first living thing sent into space?
a.
Dog
b.
Fruit flies
c.
Mouse
d.
Monkey
e.
Human
b.
Fruit flies
Which of the following statements about the discovery of exoplanets is FALSE?
a.
The Kepler Mission detects exoplanets by identifying stars with a periodic dimming of their light
b.
If we subtract the spectrum of a star from the star’s spectrum when an exoplanet is in front of it, we’ll end up with the spectrum of the core of the star
c.
The easiest type of exoplanet to detect via the Doppler-Wobble method is a high-mass exoplanet that is close to its star
d.
Using the Doppler-Wobble method, exoplanets are detected by identifying stars with a periodic blueshift and redshift in their
b.
If we subtract the spectrum of a star from the star’s spectrum when an exoplanet is in front of it, we’ll end up with the spectrum of the core of the star
What is the Karman line?
a.
The boundary that separates our solar system from interstellar space
b.
None of these answers
c.
The boundary of Earth’s gravitational field
d.
The boundary of Earth’s magnetic field
e.
The boundary of Earth’s atmosphere
f.
The boundary of the Sun’s gravitational field
e.
The boundary of Earth’s atmosphere
Which of the following statements about Earth’s recent space missions is FALSE?
a.
Canada’s Canadarm is currently installed on the International Space Station, where it is used to hold on to astronauts who are working outside the station
b.
NASA’s space shuttle consisted of an orbiter and rover so that astronauts could be shuttled to and from the Moon’s surface
c.
The International Space Station is a habitable satellite constructed for the purpose of conducting experiments in the space environment
d.
Our missions have left a shell of space junk around the Earth
b.
NASA’s space shuttle consisted of an orbiter and rover so that astronauts could be shuttled to and from the Moon’s surface
Which of the following statements about our attempts to communicate with extraterrestrials is FALSE?
a.
Voyager 1 carries a record containing sounds of Earth and is currently approaching the boundary of our solar system
b.
Using the Drake Equation, SETI has been able to accurately calculate the number of communicating civilizations in our galaxy
c.
The Pioneer spacecrafts each contain a plaque with engraved information about Earth and humans
d.
The Arecibo radio dish was used to send a radio message about Earth and humans to a star cluster
b.
Using the Drake Equation, SETI has been able to accurately calculate the number of communicating civilizations in our galaxy
