Unit 3 Test Continued
Exploring the Cosmos: Astrophysics Quiz
Test your knowledge of astrophysics and the factors that influence habitable zones around stars. This quiz is designed for anyone interested in the science behind our universe.
Challenging questions include topics such as:
- The habitable zones of different star masses
- The Drake Equation and its components
- Measurement of stellar distances through parallax
A star that is twice the mass of our Sun would have a habitable zone that
Includes Venus but not the Earth
Includes Mercury and Venus
Includes both Venus and the Earth
Includes Mars but not the Earth
Includes Earth
A star that is 75 percent the mass of our Sun would have a habitable zone that
Includes Mars but not the Earth
Includes Jupiter and its moons
Includes both Mars and the Earth
Includes Venus only
Includes both Jupiter and Saturn and their moons
What factor is not in the Drake Equation?
Fraction of stars with planets
Number of habitable planets per star with planets
Communication lag due to large distances between stars
Fraction of life-bearing planets on which intelligence involves
Average lifetime o a technologically competent civilization
What does the Drake Equation estimate?
The number of planets with life on them in the Milky Way
The number of planets with intelligent life in the Milky Way
The number of technological civilizations in the Milky Way
The number of civilizations within 50 light years of us
None of the above
What is the Sun?
It is a star just like the stars we see in the nighttime sky
It is a special star, much more powerful than any other
It is the largest planet in our Solar System
When you change the star's distance farther away from the Earth, does the parallax angle (between the Earth, the star, and the Sun) get larger or smaller?
Larger
Smaller
Like some of the other mathematical relations we've discovered already, does this mean that the parallax angle vary directly with distance, or is it an inverse relation?
The size of the parallax angle is directly proportional to the distance to the star
The size of the parallax angle is inversely proportional to the distance to the star
You measure the parallax angle of a star to be 0.05 arcseconds. How far away is it?
0.05 parsec
1 parsec
2 parsecs
10 parsecs
20 parsecs
Star "A" is three times further away from the Sun than star "B". The parallax angle of Star "B" is
The same as that Star "A"
Nine times larger than that of Star "A"
Three times smaller than that of Star "A"
Nine times smaller than that of Star "A"
Three times larger than that of Star "A"
With a measured parallax angle of 0.747 arcseconds, how far away is Alpha Centauri?
0.0134 parsec
0.747 parsec
1.34 parsecs
134 parsecs
747 parsecs
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