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Earth Science > Cosmology (Lesson 1) > Flashcards

Cosmology (Lesson 1) Flashcards

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1
Q

What was all the matter packed into?

A

Small point

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2
Q

What would happen to the small point

A

It would explode which would send matter through the universe at incredible speeds

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3
Q

What was the debris from the small point explosion composed of?

A

Hydrogen

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4
Q

How would helium form?

A

Nuclear Fusion

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5
Q

What is the definition of Big Bang Nucleosynthesis?

A

Productions of heavier, larger atoms by fusing them together

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6
Q

What would happen after the small point explosion?

A

Matter would cool and condense in specific locations

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7
Q

Who/What made us understand why specific locations?

A

Newton’s explanation of gravity

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8
Q

What would the concept of gravity help us understand?

A

Stars are not randomly scattered throughout the universe

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9
Q

What do we call these groups of stars and what are they held by?

A

These stars are called galaxies, held by gravity

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10
Q

How many planets and moons are in our solar system?

A

8 planets & 160 moons

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11
Q

What can you determine about the orderly manner of our solar system?

A

All of our planets formed around the same time

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12
Q

What are the two models of our universe?

A
  1. Geocentric-Earth is center
  2. Heliocentric-Sun is center
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13
Q

How did our solar system form?

A

From an enormous cloud of microscopic dust and matter from dead stars called a Solar Nebula

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14
Q

What would the Solar Nebula eventually do?

A

It would rotate

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15
Q

What caused matter to accumulate in the middle of the Nebula cloud?

A

Inward Gravitational Pull

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16
Q

What would happen when the inward and outward gravitational pull of the Nebula Cloud became balanced

A

A protoplanetary disk would form

17
Q

What would matter do in the center of the cloud?

A

Accumulate until it was hot enough to glow and emit energy

18
Q

What happened after the formation of the sun?

A

Temps decreased causing solids to form

19
Q

What happened as solids began to form after temperatures decreased?

A

They were attracted to each other so they grew in size.

Earth Science (7 decks)

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