ASTRO 141 N FINAL EXAM QUESTIONS AND
COMPLETE ANSWERS
Given that Earth has an average temperature of 288 K, what part of the electromagnetic
spectrum is shown in the previous figure? - ANSWER infrared
The Galactic Habitable is ______ light years wide. - ANSWER 20,000
What is wrong with this movie clip? (contact) - ANSWER radio waves seem to travel
slower than light speed
What's the relationship between light frequency f, light wavelength , and the speed of
light c? - ANSWER Frequency= speed of light/light wavelength
It is unlikely that we will be able to detect the signals from civilizations in other galaxies
because - ANSWER signals from other galaxies will be severely weakened by distance,
making them far harder for us to detect
Which of the following factors in the simplified Drake equation is best known? - ANSWER
Nhp, the number of habitable planets in our galaxy
The Air Force investigation of UFOs (1952 -1969) lead by Colonel William Coleman was
nicknamed Project __________ - ANSWER Blue book
Which of the following characteristics were never reported by UFO witnesses? -
ANSWER strange exhaust trails
The UFO crash, that is reported to have been weather balloons, happened in
_____________ New Mexico in 1947 - ANSWER Roswel
COMPLETE ANSWERS
Given that Earth has an average temperature of 288 K, what part of the electromagnetic
spectrum is shown in the previous figure? - ANSWER infrared
The Galactic Habitable is ______ light years wide. - ANSWER 20,000
What is wrong with this movie clip? (contact) - ANSWER radio waves seem to travel
slower than light speed
What's the relationship between light frequency f, light wavelength , and the speed of
light c? - ANSWER Frequency= speed of light/light wavelength
It is unlikely that we will be able to detect the signals from civilizations in other galaxies
because - ANSWER signals from other galaxies will be severely weakened by distance,
making them far harder for us to detect
Which of the following factors in the simplified Drake equation is best known? - ANSWER
Nhp, the number of habitable planets in our galaxy
The Air Force investigation of UFOs (1952 -1969) lead by Colonel William Coleman was
nicknamed Project __________ - ANSWER Blue book
Which of the following characteristics were never reported by UFO witnesses? -
ANSWER strange exhaust trails
The UFO crash, that is reported to have been weather balloons, happened in
_____________ New Mexico in 1947 - ANSWER Roswel
