WorksheetsGalaxies 8.E.4A.1
Total questions: 10
Worksheet time: 5mins
The photograph below represents the shape of the Milky Way Galaxy. Which shape best describes the Milky Way Galaxy?
circular
elliptical
irregular
spiral
Which best describes galaxies?
They are similar in size to our solar system.
They contain only one star but thousands of planets.
They are spherical in shape and usually smaller than our solar system.
They may contain billions of stars and are significantly larger than our solar system.
Which unit is most used to express the distances between galaxies?
astronomical unit (au)
light years (ly)
kilometers (km)
miles (mi)
Which sequence correctly lists the relative sizes from largest to smallest?
our solar system, universe, Milky Way Galaxy
Milky Way Galaxy, our solar system, universe
universe, Milky Way Galaxy, our solar system
universe, our solar system, Milky Way Galaxy
Which do most astronomers believe to be true about the universe?
It is contracting.
It is expanding.
It is staying the same size.
It is expanding and contracting regularly.
Why is the light year distance unit the best unit for measuring distances between galaxies?
Light travels faster across the large distances between galaxies.
Stars in different galaxies are millions and millions of kilometers apart.
Galaxies give off light over million of years.
Stars in galaxies move faster than the speed of light.
Which statement about the size of the universe is true?
Most astronomers believe the universe is expanding in size.
Most astronomers believe the universe is shrinking in size.
Most astronomers believe the universe is remaining the same size.
Most astronomers believe the universe is shrinking and expanding in a cyclic pattern.
Which statement describes galaxies?
They are similar in size to our solar system.
They contain one star and thousands of planets.
They are spherical in shape and usually smaller than our solar system.
They contain billions of stars and are significantly larger than our solar system.
A student reads characteristics of three different galaxies, as shown in the table.
Astronomers measure distances using very large units called light-years. Which distance between celestial objects would MOST likely be measured in light-years?
distance between the Sun and Earth
distance between the Moon and Earth
distance between two stars in the same galaxy
distance between two planets in the same solar system
