Space Flashcards

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
What is an asteroid
A small rocky body orbiting the sun
26
What are asteroids made of?
Asteroids are made from rock left over from the formation of other planets billions of years ago
27
What are asteroids general radius size?
10km to several 100km
28
Where do the majority of asteroids live?
They live between mars and Jupiter
29
Why are they not planets?
They do not have enough mass to have a have enough gravity to make an almost spherical shape
30
Where do comets usually live?
Oort’s cloud
31
What is a comet?
A dusty snowball that orbits the sun
32
What are comets made of?
Ice and dust
33
What happens when comets get close to the sun?
Tails of gas and dust particles are emitted
34
List 4 hazards of space travel
1. Death 2. Injury 3. Explosions 4. Money
35
List 3 benefits of space travel
1. Exploring things 2. Amazing, one of a kind views 3. Protect Earth from danger