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40 Cards in this Set

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  • Back
The reason astronomers use larger diameter telescopes to study visible light from distant objects is that larger telescopes
A) have a larger field of view
B) have a larger magnification
C) are needed to interact with the wavelengths of visible light
D) gather more light
E) all of the above
D) gather more light
In general, planets of which group are made up mostly of solid material?
A) Inner planets
B) Outer planets
C) There is no general rule
A) Inner planets
As the filament of an incandescent lamp is warmed, the light will grow
A) more red
B) more blue
C) the same color
D) dimmer
B) more blue
The escape velocity from some location near a planet depends upon
A) the strength of gravity at that location
B) the temperature at that location
C) the atmospheric pressure at that location
D) All of the above
E) None of the above
A) the strength of gravity at that location
The light gathering power of a telescope is determined by
A) the size (diameter) of the objective of the telescope
B) the ratio of focal length's of the objective and the eyepiece
C) the wavelength of visible light being observed
D) the clarity of the sky
E) none of the above
A) the size (diameter) of the objective of the telescope
A hot, dense object emits what kind of spectrum?
A) continuous
B) emission
C) absorption
D) none of the above
A) continuous
Which waves below have the least energy?
A) infrared light
B) radio light
C) blue light
D) yellow light
E) all light has the same energy
B) radio light
Our Sun's spectrum peaks at about 500 nm, another star shows a spectrum that peaks at 525 nm. Which star is warmer?
A) Our Sun
B) The other star
C) They are at the same temperature
D) There is no relationship between spectra and temperature
E) There is not enough information to know the answer
A) Our Sun
Larger Doppler shifts indicate
A) Smaller speeds
B) Larger speeds
C) There is no connection between the amount of shift and speed
B) Larger speeds
Which atomic transition (electron jumping in orbit) emits the most energy, given orbit 1 is closest to the nucleus?
A) jumping from orbit 2 to orbit 3
B) jumping from orbit 2 to orbit 4
C) jumping from orbit 3 to orbit 2
D) jumping from orbit 4 to orbit 2
E) energy is not given off when an electron jumps in orbit
D) jumping from orbit 4 to orbit 2
Suppose that a certain spectral line has a wavelength of 600 nm and that when it is observed in a distant galaxy it is observed to have a wavelength of 612 nm. How can this be?
A) The line is from a previously unknown element
B) The galaxy is moving toward Earth
C) The galaxy is moving away from Earth
D) This is a misleading question, because the situation is impossible
C) The galaxy is moving away from Earth
Spectra can be used to measure what properties of a star?
A) Velocity toward or away from us
B) composition
C) surface temperature
D) All of the above
E) None of the above
D) All of the above
What power of the telescope increases the angular size of an object?
A) magnifying power
B) light-gathering power
C) resolving power
A) magnifying power
The emission spectrum produced by the excited atoms of an element contains wavelengths that are
A) the same for all elements
B) characteristic of the particular element
C) evenly distributed throughout the entire visible spectrum
D) different from the wavelengths in its absorption spectrum
E) Both A and D above
B) characteristic of the particular element
Which of these planets is furthest from the Sun?
A) Mars
B) Saturn
C) Mercury
D) Jupiter
E) Earth
B) Saturn
Which of the following wavelengths are arranged from shortest to longest?
A) UV, IR, Visible, Radio
B) Gamma-ray, UV, Radio, IR
C) Radio, IR, Visible, UV
D) X-ray, UV, Visible, Radio
E) All light has the same wavelength
D) X-ray, UV, Visible, Radio
The bending of light as it goes from one substance into another is called
A) reflection
B) refraction
C) diffraction
D) absorption
E) multi-phasic spasmosis
B) refraction
The wavelength range of visible light is from about
A) 1 nm to 400 nm
B) 250 nm to 950 nm
C) 2 nm to 50 nm
D) 400 nm to 700 nm
E) all wavelengths
D) 400 nm to 700 nm
Which of the following spectra is produced by a very hot, thin gas like a fluorescent tube?
A) An absorption spectrum
B) A continuous spectrum
C) An emission spectrum
D) All of the above
E) None of the above
C) An emission spectrum
Which of these planets is the most massive?
A) Mercury
B) Jupiter
C) Saturn
D) Earth
E) Venus
B) Jupiter
Evidence that planetary systems are common tends to lend credence to
A) Catastrophe theories
B) Evolutionary theories
C) Both theories
D) Neither theories
B) Evolutionary theories
In general, planets of which group are larger (in diameter)?
A) Inner planets
B) Outer planets
C) There is no general rule
B) Outer planets
Which of the following waves travel with the slowest speed in a vacuum?
A) ultraviolet
B) infrared
C) X-ray
D) radio
E) they all travel at the same speed, so None of the above
E) They all travel at the same speed, so None of the above
When a mixture of Hydrogen and Oxygen gas is heated, the average speed of hydrogen molecules is ______ that of oxygen molecules.
A) smaller than
B) the same as
C) larger than
C) larger than
As a gas warms up, the molecules that makes up that gas
A) slow down
B) speed up
C) do not change, as speed does not depend on temperature
D) slow down or speed up depending on what kind of gas it is
B) speed up
After viewing several stars of differing colors, which list shows the stars from coldest to hottest?
A) red, yellow, blue
B) yellow, blue, red
C) blue, yellow, red
D) red, blue, yellow
E) blue, red, yellow
A) red, yellow, blue
The Bohr model of the atom states that energy can be emitted by the atom when an electron
A) orbits the nucleus at a constant radius
B) falls from an outer to an inner orbit
C) jumps from an inner orbit to an outer orbit
D) absorbs a photon
B) falls from an outer to an inner orbit
The resolving power of a telescope is a measure of its
A) magnification under good conditions
B) amount of light it gathers
C) ease of use of the telescope
D) ability to distinguish details in an object
E) all of the above
D) ability to distinguish details in an object
If a light source is moved closer to an observer, the source will appear to become
A) brighter
B) dimmer
C) unchanged
A) brighter
Mercury's atmosphere is likely to be weak or non-existent because of its
A) small mass
B) slow rotation
C) high surface temperature
D) both A and B
E) both A and C
E) both A and C
The wavelength at which a star emits the most light depends upon the star's
A) distance from us
B) brightness
C) temperature
D) eccentricity
E) none of the above
C) temperature
Which planets orbit around the Sun in the same direction that Earth does?
A) Mercury and Venus only
B) Mercury, Venus, and Mars only
C) Venus, Mars, and Jupiter only
D) All of the planets
E) None of the above
D) All of the planets
Different elements have unique spectral lines because each element
A) has atoms of a unique color
B) has a unique set of neutrons
C) has an associated temperature to it
D) has a unique set of electron orbits
E) None of the above; spectral lines are not unique to each element
D) has a unique set of electron orbits
Which waves below have the longest wavelength?
A) Radio
B) X-rays
C) Infrared
D) Yellow light
E) all light has the same wavelength
A) Radio
As an electron of an atom changes from one energy level to another energy level by absorbing a photon, the total energy of the atom
A) increases
B) decreases
C) remains the same
A) increases
The orbits of the planets are
A) all in nearly the same plane, that of the ecliptic
B) all in nearly the same plane, that of Earth's equator
C) all in nearly the same plane, one that passes nearly over the north and south poles of Earth
D) in random planes, mostly at great angles with one another
A) all in nearly the same plane, that of the ecliptic
Which star, A or B, is at a lower temperature?
A) Star A
B) Star B
C) they are at the same temperature
D) we are unable to determine that information
B) Star B
Which star gives off more energy?
A) Star A
B) Star B
C) they give off the same amount of energy
D) we are unable to determine that information
A) Star A
Which star is closer to Earth?
A) Star A
B) Star B
C) they are at equal distances from Earth
D) we are unable to determine that information
B) Star B
Which star do we know is moving and how is it moving?
A) Star A, away from us
B) Star A, toward us
C) Star B, away from us
D) Star B, toward us
E) we are unable to determine that information
D) Star B, toward us