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science 6-6-18 > science > Flashcards

science Flashcards

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1
Q

asteroid

A

millions of small rocky objects that orbits the Sun in the asteroid belt between the orbit of Mars and Jupiter

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2
Q

sun

A

a star the center of our solar system

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3
Q

Inner planets

A

mainly solid rocky material

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4
Q

what are the inner planets

A

Venus, earth, and Mars

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5
Q

Outer planets

A

mainly made of ice and gases

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6
Q

what are the outer planets

A

Saturn, Jupiter, Uranus, and Neptune

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7
Q

Dwarf planets

A

spherical object that orbits the sun, does not have more mass than objects in nearly orbit

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8
Q

Comet

A

is made of gas dust and ice, moves around the sun in an oval- shaped orbit, come from the other parts of solar system

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9
Q

astronomical unit

A

is the average distance from earth to the sun

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10
Q

Period of Revolution

A

the time it take Earth to travel around the sun (year)

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11
Q

Period of rotation

A

time it takes for an object to complete on rotation around itself (day)

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12
Q

Terrestrial planet

A

are the planets closer to the Sun, are made of rock and metal and have a solid outer layer

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13
Q

Greenhouse effect

A

occurs when a planet’s atmosphere traps solar energy and causes the surface temperature to increase

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14
Q

where does the greenhouse effect happen

A

venus

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15
Q

Galilean

A

the four largest moons of Jupiter

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16
Q

what are the four moons of Jupiter

A

Io, Europa, Ganymede and Calisto

17
Q

Meteroid

A

is small rocky particle that moves through space

18
Q

Meteroite

A

is a meteoroid that strikes a planet or a moon

19
Q

Meteor

A

is a streak of light in Earth’s atmosphere made by a glowing meteroid

20
Q

Impact crater

A

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

21
Q

When did Pluto become a Planet?

A

2006

22
Q

What Planet has a longer period of rotation that a period of revolution

A

Venus

23
Q

farthest planet from the sun

A

venus

24
Q

Name four dwarf planets

A

Makemake
pluto
Eris
Ceres

science 6-6-18 (1 decks)

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