HR Diagram, EM Spectrum, and Components of the Universe
Quiz by Jennifer Davis
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- Q1
What statement best describes a galaxy?
A cloud of gas that is the birthplace of stars.
A ball of plasma that experiences nuclear fusion in its core.
A system of billions of stars, gas, and dust held together by gravity.
A mass of dust and ice that orbits a star in an elliptical pattern.
30s - Q2
According to the diagram below, what are the most likely characteristics of the stars located in the red box?
The stars in the box will eventually be the hottest, brightest stars in the sky.
The stars in the box are cooler than our sun and not as bright as our sun.
The stars in the box are hotter than the white dwarfs and are very bright.
The stars in the box are called Red Giants and have a strong gravitational pull.
30s - Q3
Which statement correctly compares the stars identified on the H-R diagram below?
Star 1 is cooler and brighter than 2.
Star 2 is cooler and brighter than 1.
Star 2 is cooler and dimmer than 1.
Star 1 is hotter and dimmer than 2.
30s - Q4
A student was comparing the size and mass of objects in the universe. Which list correctly places the objects in order from smallest to largest?
Galaxy, Star, Moon, Planet, Nebula, Comet
Asteroid, Moon, Planet, Star, Nebula, Galaxy
Meteoroid, Planet, Moon, Star, Galaxy, Nebula
Comet, Moon, Nebula, Planet, Star, Galaxy
30s - Q5
Which group of stars has a high temperature even though they have a low luminosity?
Main Sequence
White Dwarfs
Supergiants
Giants
30s - Q6
Which type of wave is the telescope using if the frequency measured is 1.12 X 1012?
Gamma Rays
Infrared Light
X-Rays
Visible Light
30s - Q7
What is the frequency for the wave type that has a wavelength of 10-10m?
1018
10-10
10-12
1016
30s - Q8
Using the waves of the electromagnetic spectrum, astronomers are able to describe all of the following characteristics of stars, except ...
the organisms present on planets orbiting the star.
the temperature of the star.
the chemical composition of the star.
the planets in orbit of the star.
30s - Q9
Based on the HR diagram, which type of stars belong to spectral class K, and have the lowest luminosity?
Main-sequence stars
White dwarfs
Supergiants
Giants
30s - Q10
Stars appear to have different colors because they have different –
gravity
temperature
distance
ages
30s - Q11
Our sun is one of the many stars that has been classified as average. Its luminosity and its temperature place it in the middle of the __________ area of the H-R diagram.
Supergiant
Red Giant
White Dwarf
Main Sequence
30s - Q12
The Milky Way galaxy is described as a disk of stars orbiting a central point. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?
The stars in the center of the galaxy are extremely small.
Earth is a part of this galaxy.
Many more stars exist outside the galaxy.
The center of the galaxy consists of a dense cluster of stars.
30s - Q13
Which statement about stars is correct?
Main-sequence stars are formed by comets.
Super giants are stars that can absorb black holes.
Star formation begins in a nebula.
White dwarfs become main-sequence stars when they gain mass.
30s - Q14
The Sun is a medium-sized star that is closer to the Earth than any other star. Where is the Sun located?
2.5 million light-years from the Milky Way galaxy.
In a spiral arm of the Milky Way.
In a spiral arm of the Andromeda galaxy.
In the middle of the Milky Way galaxy.
30s - Q15
What type of galaxy is this?
Spiral Galaxy
Elliptical Galaxy
Buzz Lightyear's Galaxy
Irregular Galaxy
30s
