Q1: Lesson 2 | Solar Nebula Hypothesis Flashcards

1
Q

giant cloud of dust and gas

A

nebula

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2
Q

when did the solar nebula hypothesis occur

A

4.5 billion years ago

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3
Q

was proposed by Nicolas Copernicus where he says that the sun is at the center of the universe.

A

heliocentrism

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4
Q

has a similar idea proposed by Ptolemaus where he says that the Earth is the center of the universe.

A

geocentrism

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5
Q

how many years was our solar system formed after the big bang

A

9.2 billion years

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6
Q

who proposed the solar nebula theory

A

immanuel kant

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7
Q

2 types of planets

A

terrestrial and jovian

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8
Q

when was pluto downgraded as a planet

A

aug. 24, 2006

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9
Q

who discovered pluto

A

clyde tombaugh

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10
Q

smallest planet

A

mercury

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11
Q

closest to the sun

A

mercury

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12
Q

fastest planet

A

mercury

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13
Q

when does mercury orbit the sun

A

88 earth days

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14
Q

hottest planet

A

venus

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15
Q

what planet spins slowly in the opposite direction

A

venus

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16
Q

home planet

A

earth

17
Q

dusty, cold, desert world with a very thin atmosphere

A

mars

18
Q

more than twice as massive than the other planets of our solar system combined

A

jupiter

19
Q

how old is jupiter’s red spot

A

about 190 years

20
Q

adorned with a dazzling, complex system of icy rings

A

saturn

21
Q

at what angle does uranus rotate in

A

nearly 90 degree angle from the plane of its orbit

22
Q

is dark, cold, and whipped by supersonic winds

A

neptune

23
Q

coldest planet

A

uranus

24
Q

is the boundary of our solar system.

A

oort cloud

25
Q

has small traces of methane

A

uranus

26
Q

two belts in our ss

A

asteroid and kuiper belt

27
Q

comprising many billions of comets

A

oort cloud

28
Q

local group of galaxies

A

andromeda, milky way, triangulum

29
Q

where is milky way located

A

orion arm or spur