Space Flashcards

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1
Q

What is Cosmology?

A

Cosmology is the study of the formation of the universe

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2
Q

What is Astronomy?

A

The science that deals with the universe beyond earths atmosphere

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3
Q

Where/When did Astrology begin?

A

It began 5000 years ago in New Grange, Co.Meath

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4
Q

What is a celestial body?

A

Any naturally made object outside the earths atmosphere

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5
Q

What is a star?

A

A celestial body that generates its own light and heat

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6
Q

What are stars?

A

Stars are a mass of gas ( hydrogen and helium) held together by its own gravity

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7
Q

What are the temperatures of stars?

A

10,000,000C to 3,000,000,000C

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8
Q

How can a star generate its own heat and energy?

A

It can generate its own heat and energy because nuclear fusion is happening inside it

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9
Q

What is the star sizes range?

A

118,000km to 2 million km wide

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10
Q

What is the earths radius

A

6,371km is earths radius

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11
Q

What is the largest celestial body in our galaxy?

A

The sun is

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12
Q

What is a planet?

A

A planet is a celestial body that orbits a star. It has enough mass to form an almost round shape due to its own gravity and has cleared the region.

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13
Q

How many planets are in our solar system?

A

8

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14
Q

What is in the center of the solar system?

A

The sun

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15
Q

What is the memory key for the names of the planets?

A

My Very Educated Mother Just Served Us Noodles

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16
Q

What does it mean to clear the region?

A

Clearing the region means that is easily the largest celestial object in the region it orbits

17
Q

Name 3 facts about Mercury.

A
  1. Named after the Messenger of the Greeks
  2. 4,880m diameter
  3. It is shrinking
18
Q

Name 3 facts about Venus.

A

1.Hottest planet
2. Reflects 70% of all light
3. Houses bacteria

19
Q

2 Facts about Earth

A
  1. Only planet in the Universe to have surface water
  2. 3rd planet from the sun
20
Q

Name 2 facts about Mars

A
  1. It houses the biggest volcano in the Solar System
  2. Iron Crust ( +O2 ) = Rust = Red Colour
21
Q

Name 2 facts about Jupiter

A
  1. The most important planet in our Solar system
  2. The first planet ever
22
Q

2 facts about Saturn

A
  1. It is lighter than water
  2. 10x as wide as Earth
23
Q

List 2 facts about Uranus

A
  1. It is the coldest planet in our solar system ( -223C )
  2. 37 moons
24
Q

List 2 facts about Neptune:

A

1: Winds get up to speeds of 1900km/hr
2. 165 years to orbit the sun

25
Q

What is an asteroid

A

A small rocky body orbiting the sun

26
Q

What are asteroids made of?

A

Asteroids are made from rock left over from the formation of other planets billions of years ago

27
Q

What are asteroids general radius size?

A

10km to several 100km

28
Q

Where do the majority of asteroids live?

A

They live between mars and Jupiter

29
Q

Why are they not planets?

A

They do not have enough mass to have a have enough gravity to make an almost spherical shape

30
Q

Where do comets usually live?

A

Oort’s cloud

31
Q

What is a comet?

A

A dusty snowball that orbits the sun

32
Q

What are comets made of?

A

Ice and dust

33
Q

What happens when comets get close to the sun?

A

Tails of gas and dust particles are emitted

34
Q

List 4 hazards of space travel

A
  1. Death
  2. Injury
  3. Explosions
  4. Money
35
Q

List 3 benefits of space travel

A
  1. Exploring things
  2. Amazing, one of a kind views
  3. Protect Earth from danger