Earth Science Geology, the Environment, and the Universe

Chapter 29: Stars

Standardized Test Practice-English

1
Which zone of the Sun moves energy through radiation?
A)convective
B)photosphere
C)radioactive
D)corona
2
What layer of the Sun's atmosphere is above the chromosphere?
A)corona
B)stratosphere
C)photosphere
D)troposphere
3
__________ is the combining of light weight nuclei into heavier nuclei, which gives off energy that fuels the Sun
A)Radiation
B)Fusion
C)Division
D)Fission
4
What is the Sun's average density similar to?
A)the density of water
B)the density of the entire solar system
C)the density of the rocky planets
D)the density of the gas giant planets
5
The lowest layer of the Sun's atmosphere is called the __________.
A)lithosphere
B)photosphere
C)chromosphere
D)chromosphere
6
What is a spectrum that comes from noncompressed gas called?
A)sunspot
B)corona
C)an emission spectrum
D)rainbow
7
A(n) __________ is visible light arranged according to wavelength.
A)emission spectrum
B)solar flare
C)spectrum
D)aurora
8
From Earth, stars appear to shift in position, which is called __________.
A)binary
B)apparent magnitude
C)parallax
D)circumpolar
9
What causes the wavelength of a star's spectral lines to shift?
A)the composition of the star
B)the apparent magnitude of the star
C)the temperature of the star
D)motion between the star and the observer
10
What are two stars that orbit a common center of mass called?
A)seasonal
B)a binary
C)circumpolar
D)a cluster
11
The difference of two stars' spectra is due to the difference of their __________.
A)apparent magnitude
B)composition
C)temperature
D)luminosity
12
Constellations that can be seen all year long from a certain location are __________.
A)cluster
B)circumpolar
C)seasonal
D)binary
13
Mass, luminosity, temperature, and diameter of stars can be demonstrated on a __________.
A)Doppler shift
B)spectrum
C)main sequence
D)Hertzsprung-Russell diagram
14
Energy output from the surface of a star is called __________.
A)absolute magnitude
B)apparent magnitude
C)luminosity
D)spectra
15
During red shift, the observed wavelengths of light from distant celestial objects appear closer to the red end of the spectrum than light from nearby celestial objects. The explanation of red shift is the universe is presently __________
A)contracting only
B)expanding only
C)remaining constant in size
D)alternation between contracting and expanding
16
The Sun is powered by nuclear reactions involving which of the following?
A)fusion of helium to form hydrogen
B)fission of helium to form hydrogen
C)fusion of hydrogen to form helium
D)fission of hydrogen to form helium
17
When astronomers were first attempting to gauge the size of the universe, they used an observational effect known as parallax to show that
A)other stars are very far away from us.
B)Neptune is farther away from Earth than Jupiter.
C)quasars are among the most distant objects in the universe.
D)the Andromeda galaxy is about 2 million light-years away.
18
The parallax effect cannot be used to measure distances to other galaxies because they _________
A)are too dim to make a parallax measurement
B)are too small to made an accurate parallax measurement
C)are too far away to produce measurable parallax
D)have red shifts that cancel out their parallax
19
What will happen to Earth when the Sun becomes a red giant?
A)Earth will be pushed into a more distant orbit.
B)Earth will already be gone.
C)Earth will have a significant increase in volcanic activity.
D)Earth will get too hot to support life.
20
Areas of cooler temperature on the Sun's surface as _______
A)solar flares
B)sunspots
C)solar winds
D)prominences
21
A forming star needs a critical minimum amount of mass to enable ______
A)fusion reactions to begin
B)planets to form
C)fission reactions to begin
D)atoms of hydrogen to form
22
Fusion reactions could not occur in a star without the pressure created by _______
A)electrons
B)gravity
C)antimatter
D)rotational energy
23
The amount of helium in the sun is __________
A)increasing
B)decreasing
C)fluctuation
D)staying about the same
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