Discovering The Universe Flashcards

(28 cards)

1
Q

What is the name of the theory that suggests the Earth was formed from rocks?

A

Big Bang Theory

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2
Q

True or False: The Big Bang Theory explains the formation of the Earth.

A

False

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3
Q

Which planet is known as the ‘Red Planet’?

A

Mars

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4
Q

What is the name of the theory that suggests the Earth’s continents were once connected in a single landmass?

A

Continental Drift Theory

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5
Q

Fill in the blank: The Earth is approximately ________ years old.

A

4.5 billion

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6
Q

Which planet is the largest in our solar system?

A

Jupiter

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7
Q

What is the name of the theory that suggests the moon was formed from debris after a collision between Earth and a Mars-sized body?

A

Giant Impact Hypothesis

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8
Q

True or False: The Earth’s core is primarily composed of iron and nickel.

A

True

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9
Q

Which planet is known for its beautiful rings?

A

Saturn

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10
Q

What is the name of the theory that suggests the Earth’s crust is divided into tectonic plates that move over the mantle?

A

Plate Tectonics Theory

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11
Q

Fill in the blank: The Earth’s atmosphere is composed mainly of ________ and ________.

A

nitrogen, oxygen

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12
Q

Which planet is closest to the Sun?

A

Mercury

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13
Q

True or False: The Earth’s moon is the largest moon in the solar system.

A

False

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14
Q

What is the name of the theory that suggests the Earth’s surface features were shaped by slow-moving glaciers?

A

Glacial Theory

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15
Q

Fill in the blank: The Earth’s inner core is believed to be solid due to ________ pressure.

A

high

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16
Q

Which planet is known for its blue color and methane-rich atmosphere?

17
Q

What is the name of the theory that suggests the Earth’s magnetic field is generated by movements in the outer core?

A

Dynamo Theory

18
Q

True or False: Earth is the only planet in our solar system with liquid water on its surface.

19
Q

Which planet is known as the ‘Evening Star’ or ‘Morning Star’?

20
Q

What is the name of the theory that suggests the Earth’s early atmosphere was rich in methane and ammonia?

A

Primordial Soup Theory

21
Q

What country made the geocentric model?

22
Q

What country thought the Solar system was on a giant turtle?

23
Q

What country thought the earth was flat?

24
Q

What is the name of our galaxy?

A

The Milky Way

25
How many arms does the Milky Way galaxy have?
Four
26
What is the central bulge of the Milky Way made of?
Old stars and dust
27
What is located at the center of the Milky Way galaxy?
A supermassive black hole
28
What is the approximate diameter of the Milky Way galaxy?
100,000 light-years