Astronamy Flashcards

1
Q

What are all of the planets in the solarsystem?

A

Mercury, venus, earth, mars, Jupiter, Saturn, Uranus, Neptune

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2
Q

What are the four planets closest to the sun called?

A

Inner planets/Terrestrial planets

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3
Q

What are the four planets farthest from the sun called?

A

Outer planets/Gas giants

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4
Q

What is a celestial sphere

A

an imaginary sphere around the earth used for navigation and astronamy

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5
Q

What is a light year?

A

300 000 km per second

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6
Q

What is the unit of measurment from the earth to the sun

A

An atronomical unit (AU) 150 000 000 km

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7
Q

What takes place inside the sun that causes energy?

A

A nuclear fusion with two molecules of helium fuse and create energy.

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8
Q

What is the Canadarm2

A

A robotic arm that takes and releases stalites at the international space station

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9
Q

what is Dextre

A

An attachment to the canadarm2 that can complete tasks and use tools

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10
Q

How is mars’s atmophere different to earths?

A

Mars’s atmosphere is mostly carbon dioxide and nitrogen and earths is mostly oxygen and nitrogen

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11
Q

What is the Phionex mars mission?

A

The first mission to explore the Arctic region of Mars and confirmed that it snows there

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12
Q

What were the other rovers that went to mars called?

A

Sojourner, Pathfinder, spirit an oppertunity, curiosity (Used to see if there were livable enviorments), Percerverance (2020)

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13
Q

What star do all the others look like they rotate around?

A

Polaris / North star

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14
Q

What constellation is Polaris in?

A

The little dipper (Uras minor)

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15
Q

What are the stars that circle Polaris called?

A

Circumpolar

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16
Q

What is a gravitationl pull?

A

The force of attraction that keeps the other planets in a circular pattern. Its called an orbit.

17
Q

What is the difference between revolve and rotate?

A

Rotate is when a singular object is turning around and revolve is when the turning object is also orbiting a different object.

18
Q

What is a star?

A

A star is a ball shaped mass of superheated gases

19
Q

Where is oiur solar system navigated?

A

The milky way galaxy

20
Q

How was the moon created?

A

When the earth got hit by an astroide the size of mars.

21
Q

What are the layers of the moon?

A

Core, mantel, surface

22
Q

What makes the moon shine?

A

It is the reflection of the sun

23
Q

What are the waxing phases?

A

The moon is gaining light

24
Q

What is a waning moon?

A

The moon is losing light.

25
Q

What is a solar eclipse?

A

When the moon moves directly between the sun and earth.

26
Q

What is a lunar eclipse?

A

When the earth was directly between the sun and moon

27
Q

What was Apollo 11?

A

Apollo 11 was the first two people to land on the moon.

28
Q

what is astronamy?

A

The study of celestial objects

29
Q

What are the features of terrestrial planets?

A

Rocky surfaces
Much smaller than other planets
Orbits cause them to be closer to the sun and other planets
Very few moons

30
Q

What are the features of gaz giants?

A
No solid surface
very large
Orbits keep them farther away
Rings surround them
They have many moons
31
Q

What is the goldielocks zone

A

The perfect area for life

32
Q

What is a solar wind?

A

A stream of charged particles emitted from the sun

33
Q

Whats protecting earth from the solar wind?

A

The magnetosphere

34
Q

What causes aurora borealis?

A

The chemical reaction between solar winds and the magnetosphere

35
Q

What does the atmosphere protaect us from?

A

UV rays. (Also traps heat)

36
Q

What are three factore that make life possible?

A

Earths position in space
Earths magnetic feild
Earths atmosphere