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WorksheetsAstrophysics revision
Total questions: 13
Worksheet time: 7mins
As the temperature of a star increases, the intensity of light from it
may increase or decrease depending of the type of star
increases
decreases
remains the same
The Sun is a yellow star, indicating that it is
a hot star
a cold star
neither hot nor cool
either hot or cool
The phenomenon of splitting of white light into seven colours is know as
reflection
refraction
dispersion
diffraction
The absorption and emission lines present in a star’s spectrum determine the characteristics of
the elements in a star
the intensity of a star
the frequency of a star
all of the above
Our Sun is a main sequence star. In a main sequence star
hydrogen atoms fuse to form helium atoms in the core
helium atoms fuse to Carbon atoms in the core
elements fuse to form elements up to iron in the core
no fusion reactions occur
Stars above the main sequence in an H–R diagram
have used up all of the helium atoms in their cores and have expanded in size to form supergiants.
have used up all of the hydrogen atoms in their cores and have expanded in size to form supergiants.
have used up all of the helium atoms in their cores and have expanded in size to form red giants.
have used up all of the hydrogen atoms in their cores and have expanded in size to form red giants.
What is the only direct method we have of measuring distances to stars?
Red shift method
Standard Candles
Parallax
Spectroscopy
The more massive the star, the more luminous. This relationship is true for which of the following?
All Stars
White Dwarf Stars
Red Giants
Main Sequence Stars
Astronomical Units are a measurement of what distance?
The time taken for light to reach Earth from the Sun
The radius of the Earths orbit around the Sun
The circumference of the Earths orbit around the Sun
The diameter of the Earths orbit around the Sun
When an average sized star's life ends it becomes:
Supernova
Nova
Planetary Nebula
Blue dwarf
Heavy elements are made during:
Nova
Fusion reaction in the core of all stars
Supernova
Fusion reaction of Supergiants
Which star lives the longest?
Blue Giant
Red Giant
Red Dwarf
Yellow stars like our sun
What type of galaxy is this?
Spiral Galaxy
Elyptica Galaxy
Irregular Galaxy
Megalanic Cloud
