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Astrophysics > 2 > Flashcards

2 Flashcards

1
Q

What is the study of the universe called?

A

Astrophysics

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2
Q

True or False: The Milky Way is a type of galaxy.

A

True

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3
Q

Fill in the blank: A ______ is a large group of stars, gas, and dust held together by gravity.

A

galaxy

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4
Q

What is the closest star to Earth?

A

Proxima Centauri

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5
Q

Multiple Choice: What force keeps planets in orbit around the sun?
A) Magnetism
B) Gravity
C) Electricity

A

B) Gravity

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6
Q

What are the four inner planets of our solar system?

A

Mercury, Venus, Earth, Mars

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7
Q

True or False: Black holes can be seen with the naked eye.

A

False

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8
Q

What is a supernova?

A

A powerful explosion of a star at the end of its life cycle.

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9
Q

Fill in the blank: The ______ is a vast expanse that contains all of space and time.

A

universe

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10
Q

Multiple Choice: Which planet is known as the Red Planet?
A) Venus
B) Mars
C) Jupiter

A

B) Mars

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11
Q

What is the name of our galaxy?

A

The Milky Way

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12
Q

True or False: The sun is a star.

A

True

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13
Q

What is a comet primarily made of?

A

Ice and dust

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14
Q

Fill in the blank: An ______ is a natural satellite that orbits a planet.

A

moon

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15
Q

Multiple Choice: Which of the following is the largest planet in our solar system?
A) Earth
B) Saturn
C) Jupiter

A

C) Jupiter

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16
Q

What is the term for the explosion that occurs when a star runs out of fuel?

A

Supernova

17
Q

True or False: Light from the sun takes about 8 minutes to reach Earth.

A

True

18
Q

What is the main component of stars?

A

Hydrogen

19
Q

Fill in the blank: The ______ belt is the region of space between Mars and Jupiter filled with asteroids.

A

asteroid

20
Q

Multiple Choice: Which planet is known for its rings?
A) Neptune
B) Saturn
C) Venus

A

B) Saturn

21
Q

What is the observable universe?

A

The part of the universe that we can see and observe from Earth.

22
Q

True or False: Asteroids are larger than comets.

A

False

23
Q

What do we call a star that is at the end of its life cycle and has collapsed under its own gravity?

A

Black hole

24
Q

Fill in the blank: The ______ is the layer of gases surrounding the Earth.

A

atmosphere

25
Q

Multiple Choice: What is the name of the force that pulls objects toward each other?
A) Magnetism
B) Gravity
C) Friction

A

B) Gravity

26
Q

What is a light year?

A

The distance light travels in one year.

Astrophysics (2 decks)

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