Earth, Sun, and MoonπŸŒ‘πŸŒ“πŸŒ”πŸŒ•πŸŒ™πŸŒ’πŸŒ–πŸŒ—πŸŒ˜πŸŒšπŸŒœ Flashcards

1
Q

A natural or artificial body that orbits a planet.

A

Satellite

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2
Q

Earth’s only natural satellite β€œLuna”

  • Diameter=_______
  • Mass=________
  • Gravity=________
A

Moon

  • 1/4 of Earth’s
  • 1% of Earth’s Mass
  • 1% of Earth’s Gravity
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3
Q

A loose layer of fine rock and dust covering moon from meteorite impacts.

A

Lunar Regolith

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4
Q

Circular impact areas caused by numerous meteorite strikes.

A

Craters

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5
Q

Dark regions of lowland plain of hardened lava. β€œSea”

A

Mare

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6
Q

Deep channels of cracked crust running through moon’s maria.

A

Rilles

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7
Q

Point in which the orbit of a body is farthest from one of its foci(Earth).
-_______km away from Earth

A

Apogee

-406,000

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8
Q

Point in which the orbit of a body is closest to one of its foci(Earth).
-_______km

A

Perigee

-365,000

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9
Q

Visible shapes of the moon caused by reflected light and Earth’s shadow.
-1 cycle of them=_______

A

Phases

-29.5 days

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10
Q

Phase where moon is between Earth and Sun and so cannot be seen.πŸŒ‘

A

New Moon

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11
Q

Phase where moon is on opposite side of Earth from Sun and so is a full circle. πŸŒ•

A

Full Moon

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12
Q

Phase where moon is at right angle to Earth and Sun.πŸŒ“πŸŒ—

A

Quarter Moon

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13
Q

Phase Where moon is between New Moon and Quarter Moon Phases and only a small sliver can be seen.πŸŒ’πŸŒ˜

A

Crescent Moon

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14
Q

Phase where moon is between Full Moon and Quarter Moon Phases so 2/3 of moon can be seen.πŸŒ”πŸŒ–

A

Gibbous Moon

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15
Q

All phases of the moon where the visible portion of the moon is growing.πŸŒ‘πŸŒ’πŸŒ“πŸŒ”πŸŒ”

A

Waxing

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16
Q

All phases of moon where the visible portion is shrinking. πŸŒ•πŸŒ–πŸŒ—πŸŒ˜

A

Waning

17
Q

The casting of a shadow of one celestial body on the surface of another.

A

Eclipse

18
Q

The casting of the moon’s shadow on the surface of the Earth.

A

Solar Eclipse

19
Q

The dark central portion of the shadow which completely blocks out the sun’s light.

A

Umbra

20
Q

An area of partially blocked light surrounding the umbra.

A

penumbra

21
Q

A Solar Eclipse during which the outer ring of the sun is visible around the moon.

A

Annular Eclipse

22
Q

The casting of earth’s shadow on the surface of the Moon.

  • Last ____ _____ because of size of Earth’s shadow.
  • Fewer of these than _____ _____ , but more people experience these.
A

Lunar Eclipse

  • Several, Hours
  • Solar Eclipse