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WorksheetsUniverse/Stars Exam
Total questions: 20
Worksheet time: 10mins
Which structure includes all matter and space that exists?
planetary system
star
galaxy
universe
The universe is mostly:
made of stars
gas and dust clouds
rocky planets, moons and extraterrestrial objects such as asteroids
empty space
What is a planetary system?
a cluster of planets
planets that orbit a star (or stars)
a star (or stars) that orbit a large planet
a groups of extraterrestrial objects (such as asteroids) that orbit a planet
What is a light year?
the distance light travels in one year
a way to compare the speed of light to the speed of sound
the amount of light energy emitted by a star during one year
a way to measure the age of our universe
How is the size of our universe changing today?
the universe is expanding (getting bigger)
the universe is contracting (getting smaller)
the size of the universe is steady - it is not getting bigger or smaller
Which type of galaxy often has a supermassive black hole in its center?
elliptical galaxy
spiral galaxy
irregular galaxy
all of the above
Earth and the solar system are found in:
The Chocolate Milk Galaxy
The Watery Galaxy
The Milky Way Galaxy
The Watery Way Galaxy
In order for a celestial object to be considered a planet it must:
orbit a star
be spherical due to its gravity
have cleared its orbital path around the star it revolves
all of the above
Which of the following statements does NOT correctly describe a star?
a star is made of plasma
a star has a solid surface
a star "burns" hydrogen to produce light
a star creates new and heavier elements as it produces light
Which star would have the highest temperature?
a red star
a white star
a yellow star
a blue star
What type of star is our sun?
a red giant
a super giant
a main sequence star
a white dwarf
Which type of star is hot, small and dense and nearly dead?
a red giant
a supergiant
a main sequence star
a white dwarf
A star is "born" in a:
a stellar nebula
a planetary nebula
a supernova
a black hole
An average size star, like our sun, will eventually become:
a supergiant
a red giant
a neutron star
a black hole
Which type of EM wave is associated with a heat lamp, and can also be used to identify newborn stars?
Ultraviolet
Infrared
Visible
Gamma
This type of EM wave can be used to detect black holes as well as used in medical applications.
gamma
ultraviolet
infrared
X-ray
All stars are born in a cloud of dust called:
planetary nebula
neutron star
stellar nebula
white dwarf
Ashni joins the astronomy club. During a trip to an observatory, the members of the astronomy club observe several different stars. Of the following four stars, which star should Ashni label as hottest in her journal?
Wolf, red
Ceti, yellow
Cygni B, orange
Vega, blue-white
Which is most important in determining the fate of a star?
the star's color
the star's distance
the star's mass
the star's temperature
Gloria is at the observatory and is examining a newly discovered star through a powerful telescope. She wants to find out how bright the star actually is. What information will help her calculate the apparent magnitude of the star?
temperature of the star
composition of the star
distance from Earth to the star
color of the star
