What is an arcsecond?
Astronomy Unit 1.3 - Measurements of the Sun

Quiz
•
Physics
•
12th Grade
•
Hard
Elizabeth Schubert
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1/360 of a degree
1/3600 of a degree
1/60 of a degree
1/600 of a degree
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a black body in astronomical terms?
A type of star
A perfect reflector of all wavelengths of radiation
A perfect emitter and absorber of all wavelengths of radiation
A dark region of space
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the Astronomical Unit (AU) represent?
The distance from the Earth to the Moon
The distance from the Earth to the Sun at its closest point
The average distance between the Earth and the Sun
The distance from the Earth to the edge of the Solar System
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
How did Eratosthenes estimate the circumference of the Earth?
By measuring the distance between two cities
By measuring the angle of a shadow in one city and the distance to where the sun was directly overhead
By calculating the distance the Earth travels in one day
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the size of the Sun determined?
By measuring the temperature of the Sun's core
By calculating the distance from the Earth to the Sun
By using the size of an AU and the proportion of the sky the Sun occupies in arcseconds
By observing the Sun's diameter during a solar eclipse
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the temperature of the Sun, found using the spectrum of black body radiation, indicate?
The age of the Sun
The size of the Sun
The distance of the Sun from Earth
The radiation emitted by the Sun depending only on its temperature
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The graph shows how the intensity of different wavelengths of radiation from a hot object varies with temperature. What can NOT be concluded from the graph about how the distribution of the intensity of radiation from an object changes as the temperature of the object increases?
the intensity of every wavelength increases
the shorter the wavelength the more rapid the increase in intensity
the peak intensity occurs at shorter wavelength
the intensity of every wavelength decreases
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