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Astronomy 101 exam 1 Questions and
Correct Answers
The distance between any point on s wave and the next similar
point is the _______ Ans: wavelength
Galileo Galilei was perhaps the first person to use a _________ to
systematically study objects in the sky Ans: telescope
Declination is the celestial analogue of _________ Ans: latitude
With its smaller mass and size, the _________ at the surface of the
moon is about 1/6th of that at the surface of the Earth Ans:
gravity
A _________ is a graph of a wavelength of light versus the intensity
of light at each wavelength Ans: spectrum
Explain the distinction between mass and weight Ans: Mass is a
measure of the amount of matter an object has. A given object has
the same mas no matter where it is. The weight force on an object
due to gravity. An object's weight will vary depending on the
gravity. In space, astronauts are weightless, but they still have
their mass.
Which number has the same meaning as 8,670? Ans: 8.76X10^3
The distance traveled by light in an interval is equal to the speed
of light multiplied by ________ Ans: the time
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, 2 | Page
The procedure of writing numbers as a decimal value between 1
and 10 times 10 raised to an integer power (e.g. 1.2X10^34) is
called __________ Ans: scientific notation
In space, the velocity of visible light is about _________ Ans:
astronomical notation
In space, the velocity of radio waves is about _________ Ans:
300,000 km/s
Scientific results must be _________ Ans: reproducible
The process of breaking visible light down into its component
colors creates _________ Ans: spectrum
The Earth's atmosphere shields us from most kinds of
electromagnetic radiation from space. The exception is ________
Ans: visible light and radio waves
When the wavelength of light perceived by an observer is longer
than the "rest wavelength" emitted at the source of the light, then
the radiation has been __________ Ans: redshifted
Compared with visible-light photons, a photon of radio waves has
_______ Ans: less energy
When a gas removes energy at a particular wavelength from
radiation passing through it, it creates a ______ Ans: absorption
line
In a spectrum, bright lines that appear at wavelengths where there
is more radiation than at neighboring wavelengths are called
______ Ans: emission lines
© 2025 All rights reserved
Astronomy 101 exam 1 Questions and
Correct Answers
The distance between any point on s wave and the next similar
point is the _______ Ans: wavelength
Galileo Galilei was perhaps the first person to use a _________ to
systematically study objects in the sky Ans: telescope
Declination is the celestial analogue of _________ Ans: latitude
With its smaller mass and size, the _________ at the surface of the
moon is about 1/6th of that at the surface of the Earth Ans:
gravity
A _________ is a graph of a wavelength of light versus the intensity
of light at each wavelength Ans: spectrum
Explain the distinction between mass and weight Ans: Mass is a
measure of the amount of matter an object has. A given object has
the same mas no matter where it is. The weight force on an object
due to gravity. An object's weight will vary depending on the
gravity. In space, astronauts are weightless, but they still have
their mass.
Which number has the same meaning as 8,670? Ans: 8.76X10^3
The distance traveled by light in an interval is equal to the speed
of light multiplied by ________ Ans: the time
© 2025 All rights reserved
, 2 | Page
The procedure of writing numbers as a decimal value between 1
and 10 times 10 raised to an integer power (e.g. 1.2X10^34) is
called __________ Ans: scientific notation
In space, the velocity of visible light is about _________ Ans:
astronomical notation
In space, the velocity of radio waves is about _________ Ans:
300,000 km/s
Scientific results must be _________ Ans: reproducible
The process of breaking visible light down into its component
colors creates _________ Ans: spectrum
The Earth's atmosphere shields us from most kinds of
electromagnetic radiation from space. The exception is ________
Ans: visible light and radio waves
When the wavelength of light perceived by an observer is longer
than the "rest wavelength" emitted at the source of the light, then
the radiation has been __________ Ans: redshifted
Compared with visible-light photons, a photon of radio waves has
_______ Ans: less energy
When a gas removes energy at a particular wavelength from
radiation passing through it, it creates a ______ Ans: absorption
line
In a spectrum, bright lines that appear at wavelengths where there
is more radiation than at neighboring wavelengths are called
______ Ans: emission lines
© 2025 All rights reserved
