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St. Adalberts > The Solar System > Flashcards

The Solar System Flashcards

1
Q

ORBIT

A

an objects path around the Sun

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2
Q

ASTEROID

A

millions of small rocky objects that orbit the Sun, in the Asteroid Belt between Mars and Jupiter.

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3
Q

COMET

A

is made of gas, dust, and ice and moves around the Sun in a oval-shaped orbit (elliptical).

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4
Q

ASTRONOMICAL UNIT (AU)

A

the average distance from Earth to the Sun.

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5
Q

PERIOD OF REVOLUTION

A

the time it takes an object to travel once around the Sun.

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6
Q

PERIOD OF ROTATION

A

the time it takes an object to make one complete rotation around itself.

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7
Q

OUR STAR

A

the Sun and it is the center of our Solar System.

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8
Q

STAR

A

an object in space made of gases in which nuclear fusion reactions occur that emit energy.

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9
Q

PLANETS

A
  1. Cleared its neighborhood
  2. Orbit the Sun
  3. Round in shape
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10
Q

DWARF PLANET

A
  1. has NOT cleared their neighborhood
  2. is NOT a satellite
  3. Round in shape
  4. Orbits the Sun
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11
Q

TERRESTRIAL PLANET

A

are the planets closest to the Sun, are made of rock and metal and have solid outer layers.

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12
Q

INNER PLANETS

A

Mercury
Venus
Earth
Mars

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13
Q

OUTER PLANETS

A

Jupiter
Saturn
Uranus
Neptune

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14
Q

GREENHOUSE EFFECT

A

occurs when a planets atmosphere traps solar energy and causes the surface temperature to increase. (Venus)

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15
Q

GALILEAN MOONS

A

the four largest moons of Jupiter - Io, Europa, Ganymede, and Callisto. They are all made of rock and ice.

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16
Q

METEOROID

A

is a small rocky particle that moves through space.

17
Q

METEOR

A

is a streak of light in Earths atmosphere made by a glowing meteoroid.

18
Q

METEORITE

A

a meteor that strikes on a planet or moon.

19
Q

IMPACT CRATER

A

is a round depression formed on a surface of a planet, moon, or other space object, by the impact of a meteorite.

20
Q

SHORT-PERIOD COMET

A

a comet that takes less than 200 Earth years to orbit the Sun.

21
Q

LONG-PERIOD COMET

A

a comet that takes millions of Earth years to orbit the Sun.

22
Q

SATELLITE

A

can be a natural or man-made object that is in orbit around the Sun.

23
Q

GAS GIANTS

A

are the outer planets made of hydrogen and helium, they have thick gas and liquid layers covering a solid core. The gas giants are significantly larger than the terrestrial planets.

St. Adalberts (6 decks)

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