Which of the following correctly compares the amount of matter of different objects in the universe?
In our space unit, we learned that we have yet to leave our solar system. Our solar system is so large that a space probe has been traveling for 40 years, and still has another 40,000 years to go before it leaves our solar system. Even though our solar system seems huge to us, it is actually just a tiny part of a much bigger object in the universe, a galaxy.
Galaxies are made up of billions of stars.
Our galaxy, the Milky Way, is a spiral shaped galaxy. Our solar system is on one of the arms of the spiral.
Stars are the matter hogs of the universe. Our Sun, which is a very average star in every way, contains 99% of the matter in our solar system.
Objects in the universe can be ordered based on the amount of matter they contain. From containing the most matter to the least matter, the order is below. Sometimes, some of these objects are not part of the order, such as nebula and moon.
Universe-Galaxy-Nebula-Solar System-Star- Planet- Moon
Galaxies come in three shapes, Elliptical, Spiral, and Irregular. What are the shapes of the galaxies below?
Elliptical-A and D Spiral-B and F Irregular-C and E
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Which of the following correctly compares the amount of matter of different objects in the universe?
A star contains less matter than a galaxy and more matter than a planet.
A galaxy contains less matter than a moon and more matter than a planet.
A planet contains less matter than a galaxy, and more matter than the star it orbits.
A moon contains less matter than a star, and more matter than the planet it orbits.