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Science > Space 2 > Flashcards

Space 2 Flashcards

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1
Q

What makes up our solar system?

A

The sun and group of objects that move around it.

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2
Q

Name 4 objects that orbit the sun.

A

Planets, dwarf planets, asteroids, comets.

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3
Q

What is the difference between a planet and a dwarf planet?

A

Planet- must orbit the sun, be almost spherical, have a greater mass than all the mass of objects orbiting nearby

Dwarf planets- spherical object orbiting the sun, does NOT have more mass than the total mass of objects orbiting nearby

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4
Q

What is the name of the millions of rocky objects that orbit the sun?

A

Asteroids

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5
Q

Where is the asteroid belt?

A

Between mars and Jupiter (inner and outer planets)

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6
Q

What is made up of gas, dust, and ice and orbits the sun in an oval-shaped orbit?

A

Comets

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7
Q

What is an astronomical unit? (AU)

A

The average distance from earth to sun

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8
Q

How do you convert from km to AUs?

A
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9
Q

What is the name given to planets made up of rock and metal?

A

Terrestrial

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10
Q

What type of planet has a hard surface?

A

Terrestrial

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11
Q

Which planet has no atmosphere?

A

Mercury

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12
Q

Which planet is very hot up to 460 degrees C?

A

Venus

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13
Q

Which planet has acid rain?

A

Venus

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14
Q

Which planet besides earth has polar caps?

A

Mars

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15
Q

Which planet has signs of liquid water?

A

Mars

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16
Q

What is the name given to planets made up of gas and ice?

A

Gaseous

17
Q

What is the largest planet in the solar system?

A

Jupiter

18
Q

What is the name of the storm on Jupiter?

A

The great red spot

19
Q

What are the 4 largest moons on Jupiter?
What are they called collectively?

A

Io, Europa, Ganxlmede, and Callisto

Galilean moons

20
Q

Which planet has the most visible rings?

A

Saturn

21
Q

What is the largest moon of Saturn?

A

Titan

22
Q

What planet has an unusual tilt?

A

Uranus

23
Q

Which planet is bluish in color?

A

Uranus

24
Q

Which planet has a surface of frozen nitrogen and geysers?

A

Neptune

25
Q

What is a pattern of stars called?

A

Constellations

26
Q

What is a light year?

A

The distance light travels in 1 year

27
Q

What is the difference between apparent magnitude and luminosity?

A

Apparent magnitude- how bright something appears to be from earth

Luminosity- how bright something truly is

28
Q

What is a large ball of gas held together by gravity with a core so hot that nuclear fusion?

A

Star

29
Q

How are stars classified?

A

Temperature, color, mass

30
Q

Where do stars form?

A

Nebula

31
Q

What is a hot, dense, slowly cooling sphere of carbon?

A

White dwarf

32
Q

What is an enormous explosion that destroys a star?

A

Supernova

33
Q

What is a dense core of neutrons after a supernova?

A

Neutron star

34
Q

What is an object with such strong gravity that light cannot escape?

A

Black hole

35
Q

What is a large collection of stars called?

A

Galaxy

Science (10 decks)

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