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WorksheetsAstronomy RETEST
Total questions: 20
Worksheet time: 10mins
The universe has many different components. Which list places four components of the universe in the most likely order from smallest to largest?
Planets, stars, nebulae, galaxies
Planets, stars, galaxies, nebulae
Nebulae, stars, planets, galaxies
Galaxies, stars, planets, nebulae
A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope.
Why do other stars look much dimmer than the sun?
The sun appear yellow, which is more visible than other colors.
The sun is much closer to Earth than other stars are
Other stars are made up of different gases than the sun is.
As light from other stars travels through space, it gets reflected.
Stars are made mostly of which two elements?
hydrogen and helium
mercury and strontium
iron and potassium
krypton and bismuth
Cell phones (also have microwaves) and televisions use this type of EM wave. It has the longest wavelength with the lowest frequency.
Radio Wave
TV Wave
Gamma wave
Ultraviolet Wave
The type of wave with the shortest wavelength and highest frequency. This type of wave is extremely harmful.
radio
infrared
gamma
x ray
What is the time taken for the light to travel between the Sun and Earth?
4 minutes
8 minutes
12 minutes
2 minutes
Proxima Centauri is ______ light years away.
6.8
2.5
4.3
5.4
