Chapter 2 VOCAB: 8th Flashcards

1
Q

A description of the solar system in which all of the planets revolve around Earth.

A

Geocentric

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2
Q

A description of the solar system in which all the planets revolve around the sun.

A

Heliocentric

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3
Q

The partial or total blocking of one object by another

A

Ellipse

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4
Q

The tendency of moving

A

Inertia

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5
Q

The process by which hydrogen atoms joins together, to form helium, releasing energy.

A

Nuclear fusion

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6
Q

The central part of the sun, which nuclear fusion occurs

A

Core

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7
Q

The inner layer of the sun’s atmosphere

A

Photosphere

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8
Q

The middle layer of the sun’s atmosphere

A

Chromosphere

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9
Q

The outer layer of the sun’s atmosphere

A

Corona

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10
Q

A stream of electrically charged particles by the sun’s corona

A

Solar wind

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11
Q

The dark area of gas on the sun that is cooler then surrounding gases.

A

Sunspot

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12
Q

A loop of gas that protrudes from the sun’s surface linking parts of sunspot region

A

Prominence

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13
Q

An explosion of hydrogen gas from the sun’s surface occurs when loops in suspect regions suddenly connect

A

Solar flare

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14
Q

The name given to the four inner planets: mercury, Venus, earth, and mars

A

Terrestrial

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15
Q

The spinning motion of a planet from east to most planets and moons

A

Retrograde rotation

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16
Q

The trapping of heat by a planets atmosphere

A

Geeenhouse effect

17
Q

The name given to the first four outer planets: Jupiter, Saturn, Uranus. And Neptune

A

Gas giant

18
Q

A ball of ice and dust whose orbit is a long narrow ellipse

A

Comet

19
Q

Objects revolving around the sun that are too small and too numerous to be considered planets

A

Asteroid

20
Q

The region of the solar system between the orbits of mats and Jupiter where there are many asteroids

A

Asteroid belt

21
Q

A chunk of rock or dust in space

A

Meteroid

22
Q

A streak in the sky produced by the burning of a meteroid in Earths atmosphere

A

Meteor

23
Q

A meteoroid that has hit Earth’s surface

A

Meteorite

24
Q

Life that exists outside of earth

A

Extraterrestrial