Going the Distance
It All Started With...
A Star Is Born
Reading The Rainbow
Space Soup
100
What units would be best to describe the distance to Berlin, Germany?
Kilometers
100
Which gas accounts for approximately 25% of the universe's mass.
Helium
100
True or false: carbon is formed in stars
True
100
Which of the following are scientists able to obtain by studying the star's spectrum?
a. The stage the star is in is based on its blue shift.
b. There is nothing else a scientist can know other than what elements a star is made of.
c. The temperature can be inferred from the brightness of the star.
d. The velocity shows it is moving towards them with a redshift.
C. The temperature can be inferred from the brightness of the star.
100
Isotopes of this included deuterium and tritium.
Hydrogen
200
What units would be best to describe the distance to Saturn?
astronomical units
200
Which aspect of the big bang theory does "expansion rate estimated with confidence & knowing timing of initial element formation" describe?
Ratio of H to He
200
True or false: Uranium is formed in stars
False
200
Through laboratory studies, the spectra of many gases are known. This allows scientists to do what?
By comparing the spectra of known gases to those of objects at great distances, scientists can identify the composition of large-scale features such as nebulae, stars, and galaxies.
200
What can Parallax be used to determine?
The distance to a star that is within 1000 light years of Earth.
300
What units would be best to describe the distance to Adromeda galaxy?
Light-years
300
Which aspect of the big bang theory does "universe is expanding in all directions" describe?
Cosmic Microwave Background
300
Hydrogen is fusing to form helium in the star's core describes which of the following:
protostar, dying star, or star on the main sequence
Star on the main sequence
300
Based on the electromagnetic spectrum, which of the following are the hotter star: red or blue giant stars?
Blue
300
Which of the following is NOT a major type of galaxy?
Hexagonal, Irregular, Spiral, Elliptical
Hexagonal
400
Which of the following is the approximate diameter of Earth?
1million KM, 4.4 ly, or 13000 KM
13000 km
400
Which aspect of the big bang theory does "universe is expanding in all directions, distant galaxies moving away from us faster, and expansion rate estimated with confidence" describe?
Motion of Galaxies
400
Based on the following description: hot, bright, blue, medium mass; where would it be found on the graph? 
Main Sequence
400
True or False: When studying a star cluster, observations indicated an irregularly shaped structure with many closely spaced stars. Spectra indicate dominantly hotter, younger stars.
True
400
How can scientists study an object in space regardless of its distance from Earth?
A telescope in orbit concentrates electromagnetic radiation from the object, and a spectrograph or other instrument is used to analyze the EM radiation.
500
Which of the following is the approximate distance to the nearest dwarf star?
4.4 ly, 8.58 ly, or 13000km
8.58 ly
500
Observations of galaxy motion indicate that the universe is expanding in all directions. Do scientists infer, therefore, that the Milky Way's position in space is static?
No. If we were in another galaxy, the Milky Way would be travelling away from us.
500
Where in our sun is energy produced, and how does this process occur?
Nuclear fusion produces energy in the core of stars, including our sun.
500
Suppose you observe absorption spectra from three galaxies. All contain the same number of absorption lines. The lines have the same spacing in all three spectra:
1. Lines in the first spectrum show blueshift
2. Lines in the second match laboratory emission lines
3. Lines in the third show redshift
Which of the following is true:
A. The blueshifted lines of the first galaxy show that it is moving away from Earth.
B. The redshifted lines of the third galaxy show that it is moving away from Earth.
C. The differences in the line positions show that the galaxies are composed of different elements.
B. The redshifted lines of the third galaxy show that it is moving away from Earth.
500
What effect does solar wind have on Earth's magnetic field?
It shifts the field in a direction away from the sun.