Moon Features Flashcards

1
Q

Albedo

A

Percentage of sunlight that the moon’s surface reflects.

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2
Q

What is the moon’s albedo?

A

7%

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3
Q

Highlands

A

Heavily cratered, mountainous areas

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4
Q

Maria

A

Dark, smooth plains formed by volcanoes

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5
Q

Impact Craters

A

When objects from space crash into surface

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6
Q

Ejecta

A

Material blasted out after impacts

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7
Q

Rays

A

Long trails of ejecta

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8
Q

Rilles

A

Valleylike structures, may be collapsed lava tubes.

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9
Q

Regolith

A

loose, ground up dust on surface of the moon

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10
Q

How is the moon unique among other moons?

A
  1. One of the largest moons in comparison to the planet it orbits.
  2. Solid & rocky rather than icy/gassy
  3. The distance btwn earth and moon is larger than other moons and their planets

Size, texture, distance

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11
Q

How old is the moon?

A

3.8-4.6 billion

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12
Q

Layers of the moon…

A
  1. Core
  2. Lower Mantle
  3. Upper Mantle
  4. Crust
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13
Q

What type of core does the moon have?

A

Solid iron

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14
Q

How are maria formed?

A

Lava welled up and filled in impact basins.

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15
Q

Why are there no maria on the far side?

A

The crust is thicker on the far side, so it’s harder for lava to reach the surface.

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16
Q

Description of core:

A

solid iron

17
Q

description of lower mantle:

A

partially molten

18
Q

description of upper mantle:

A

solid

19
Q

Complex craters are caused by….

A

faster meteorites

20
Q

Why are there extreme temps?

A

The moon has no atmosphere so it is unable to trap or release heat