Solar System Quiz Flashcards

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1
Q

1)Fission(moon theories)

A

The fast spinning, molten earth lost some material, that was flung into space and formed our moon

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2
Q

2)co-formstion(moon theories)

A

The moon and the earth formed at about the same time from the debris orbiting the sun

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3
Q

3)capture(moon theories)

A

The moon was a rogue celestial body that was captured by the earths gravitation feild.

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4
Q

4)impact(moon theories)

A

During the earths early formation a planet sized object struck it. The impact destroyed the object and released debris unto space which eventually formed the moon we see today.

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5
Q

Moons tineline

A

Earth is formed 4.5 billions years ago from dust orbiting the sun

A plant sized object collides with the early earth

Ejected matter orbiting the earth forms the moon

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6
Q

What did meteroid bombardment cause?

A

Melt the surface, forming magma oceans.

Once cooled caused creaters and raised mountains

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7
Q

What did the largest impacts carve out

A

Great basins and cracked the surface enough fir the lave to flow from the moons interior
Over the last 3 billion yesrs the moons interior has been geologically in active

Only bombardment that continues to this day is from micrometeroids(size of grains of sand)

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8
Q

Whay does the moon have light and dark spots?

A

The dark spots are young plains called msria-formed by collisions from comets, meteorites and asteroids.

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9
Q

Ages of lunar areas

A

Lunar maria-3.1-3.8 billion years old

Lunar highlands-4.5 billion years

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10
Q

What is a meteroid?

A

Lumps of rocks or iron in outer soace that can vary in size

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11
Q

What are the maria?

A

When the moon was first observed through telescopes, they thought the basins were filled with water, so it was named maria(seas in latin)

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12
Q

What is the rille?

A

Trench like valleys that run through the maria bedrock

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13
Q

What are rays on the moon?

A

Consist of shattered rick and dust that were splashed out by meteroids

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14
Q

What is the regolith?

A

the soil on the moon, it means lose rock materials

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15
Q

Why are some areas on the moon dark and some are light coloured?

A

The dark coloured areas on the moon sre called maria, they are young plains composed of basalt. Basalt is a dark-coloured, fine-grained, ingenous rock. The light areas on the moon are mountains that were lifted up from the impacts if the meteroids.

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16
Q

The moons motions

A

This 27.3 day cycle is known as a sidereal month

However, it takes 29.5 days for the moon to return to it’s same phase (known as a synodic month)

17
Q

The moons motions

A

When the moon is increasing in appearance it is said to be waxing (this occurs from new moon → full moon and lasts about 2 weeks)

When the moon is decreasing in appearance it is said to be waning (this occurs from full moon → new moon and lasts about 2 weeks)

18
Q

The moons motions

A

When the moon is less than half lit it is called a Crescent Moon

When the moon is more than half lit it is called a Gibbous Moon

19
Q

The moons motions

A

Depending on which phase the moon is in, it will raise and set at a different time throughout the day or night