What is an Irregular Galaxy?
Ch. 2 Study Game 2022: Stars, Galaxies, & the Universe

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Science
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5th - 8th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
An Irregular Galaxy is a type of galaxy that does not have a distinct regular shape, unlike spiral or elliptical galaxies. They often appear chaotic and are rich in gas and dust.
2.
FLASHCARD QUESTION
Front
What unit of measurement do astronomers use for distances outside of our Solar System?
Back
Astronomers use light-years to measure distances outside of our Solar System. One light-year is the distance that light travels in one year.
3.
FLASHCARD QUESTION
Front
Where is Earth located in the Milky Way Galaxy?
Back
Earth is located in the Milky Way Galaxy, specifically in one of its spiral arms, known as the Orion Arm.
4.
FLASHCARD QUESTION
Front
What is a Spiral Galaxy?
Back
A Spiral Galaxy is a type of galaxy characterized by its spiral shape, with arms that wind outward from the center. The Andromeda Galaxy is an example of a spiral galaxy.
5.
FLASHCARD QUESTION
Front
What is Gravity?
Back
Gravity is a force that attracts two bodies towards each other. It is responsible for keeping planets in orbit around stars and stars grouped together in galaxies.
6.
FLASHCARD QUESTION
Front
What is the Milky Way Galaxy?
Back
The Milky Way Galaxy is the galaxy that contains our Solar System. It is a barred spiral galaxy and is estimated to contain 100 to 400 billion stars.
7.
FLASHCARD QUESTION
Front
What is a Light-Year?
Back
A light-year is a unit of distance that represents how far light travels in one year, approximately 5.88 trillion miles (9.46 trillion kilometers).
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