WorksheetsUniverse
Total questions: 19
Worksheet time: 11mins
Which has longer wavelengths?
Radio
Visible
Gamma
X-ray
Stars form in giant clouds of gas and dust. What are these clouds called?
Black Hole
White Dwarf
Super Nova
Nebula
Which component of the universe contains all other components listed below and would have the greatest mass?
Solar system
Nebula
Galaxy
Planetary System
When a mass of hydrogen has enough density, it begins to fuse the hydrogen atoms together. This produces heat and light. What is this classified as?
nebula
star
galaxy
planet
Where did the Sun form?
From a nebula outside of the Milky Way Galaxy
From a large cloud of gas and dust in a nebula called the Milky Way Galaxy
Near the outer edge of the Milky Way Galaxy. After its formation, it interacted with other planets to form comets
The Sun was formed in a nebula in the Milky Way Galaxy.
Which describes the location of star A correctly?
Star A is less bright than the Sun and has a surface temperature above 25,000 K
Star A is brighter than the Sun and has a surface temperature below 25,000 K
Star A is less bright than the Sun and has a surface temperature of above 11,000 K
Star A is brighter than the Sun and has a surface temperature below 11,000 K.
Which type of stars belong to spectral class K and have the lowest luminosity?
Giants
White Dwarfs
Supergiants
Main-Sequence stars
Which of these correctly identifies different objects in the universe according to their size and composition?
A nebula is larger than a galaxy
a solar system contains many stars
a galaxy contains many solar systems
a galaxy is bigger than a universe
Where in the Milky Way is Earth found?
Our Sun is in the middle of the galaxy
about 1 light year from the middle of the galaxy
It varies depending on how it rotates
Near the outer edge of the galaxy
What is the nearest star to planet Earth
Moon
Sun
Sirius
Proxima Centauri
Which describes the Sun and the Milky Way?
The Sun is a medium sized star near the edge of a disc shaped galaxy
The Sun is a massive star near the edge of a disc shaped galaxy
The Sun is a dwarf sized star near the edge of a disc shaped galaxy
The Sun is medium sized star near the middle of a disc shaped galaxy
What can be determined about stars using wavelengths from the electromagnetic spectrum?
distance, chemical compostion
distance, chemical composition, temperature, luminosity
distance, temperature, luminosity
chemical composition, temperature
Our Sun is classified as an average star. This places it in the middle of which type of star on the HR diagram?
Main sequence
White dwarf
Red giant
Super giant
Which stars have the greatest luminosity according to this HR diagram?
Hot white dwarf
Hot main sequence star
Cool super giant
Cool giant
Which galaxy is the largest in the local group?
Milky Way
Andromeda
Triangulum
Le Gentil
How far is Proxima Centauri from the Earth ?
4.3 km
43 km
43 trillion km
430 trillion km
How long would it take light from Proxima Centauri to reach Earth?
1 year
4.3 years
43 years
10 trillion
It takes light approximately 8 minutes and 20 seconds for light from the Sun to reach Earth. Which is true about Earth's distance from the Sun
The Sun is much less than 1 light year from Earth
The Sun is 1 light year from Earth
The Sun is 8.33 light years from Earth
The Sun is so hot it burns
Why does our Sun, an average sized star, appear so much brighter than other more massive stars?
The Sun is lit
The Sun is closer to Earth than other stars
The Sun is made of different elements
The Sun is prettier so it shines brighter
