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Galaxy and Dense Gas Passes

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1. The original Big Bang model had three major problems. The 'fix' that solved them is known as _________. COSMIC INFLATION THEORY
2.
When light from a hot solid, liquid, or dense gas passes through a cooler gas, it will produce a/an _________ spectrum.
ATOMIC SPECTRUM
3.
One name that has been given the mysterious force apparently responsible for driving the acceleration of the universe’s expansion is _________.
DARK ENERGY
4.
The area on the H-R diagram where “normal” stars can be found is known as the _________.
MAIN SEQUENCE
5.
Although Copernicus' model of the solar system correctly placed the sun at the center, it still provided inaccurate predictions because it maintained that the planets' orbits were _________. …show more content…

A) Accelerating
16.
The outer planets are more massive than the inner planets because
C) Both of the above
17.
The three basic types of galaxies are
B) Spiral, elliptical, and irregular.
18.
A planet orbiting a star feels a force due to the star’s gravity that
C) Increases with the star’s mass and decreases with the square of the distance.
19.
Massive main sequence stars
A) Have hot cores, use their hydrogen rapidly, and go supernova after a short life.
20.
Hubble’s law gives us an indirect way to measure a galaxy’s
D) Distance.
21.
We can determine an object’s temperature from its thermal (or “blackbody”) spectrum by finding the wavelength at which it emits the most electromagnetic radiation.
A) TRUE
22.
A solar eclipse occurs during full moon.
B) FALSE
23.
We can still see radiation left over from the Big Bang today as the cosmic microwave background.
A) TRUE
24.
After its core hydrogen is depleted, a red main sequence star will go supernova after its red giant phase.
A) TRUE
25.
The oldest stars in the Milky Way are found in the disk.
B) FALSE
26.
Astronomers believe there is enough dark matter in the universe to slow its expansion gradually toward a stop.
A) TRUE
27.
Galileo’s findings from his telescopic observations were revolutionary because he showed that the heavens were not perfect.
B) FALSE
28.
If the sun had begun fusion later, so it did not clear the solar nebula of its remaining gas so soon,

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