The Night Sky And Solar System Flashcards

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1
Q

Artificial satellite

A

A manmade spacecraft

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2
Q

Orbit

A

The path taken by one body in space around another

-I.e earth orbiting the sun

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3
Q

Earth

A
  • Rocky inner planet

- third from the sun

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4
Q

Moon

A
  • Rocky body orbiting the earth

- is earth’s only natural satellite

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5
Q

Natural satellite

A

A moon in orbit around a planet

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6
Q

Planet

A

A large body that orbits a star in a solar system

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7
Q

Sun

A

The star at the centre of our solar system

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8
Q

Solar system

A

The sun and the planets and other bodies around them

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9
Q

Comet

A

-dust particles frozen in ice that orbit the sun

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10
Q

Meteor

A

A piece of rock or dust that heats up and creates streaks of lights

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11
Q

Meteorites

A
  • strong metallic object

- any meteor that has touched the ground is this

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12
Q

Star

A

A body in space that gives out its own light

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13
Q

Galaxy

A

Immense groups of stars and solar systems

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14
Q

Milky Way

A

The galaxy containing our sun and solar system

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15
Q

Universe

A

Everything that exists

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16
Q

Astronomers

A

Scientists who study space

17
Q

Ellipse

A

-squashed circle or oval shape

18
Q

Asteroid

A

Lumps of rock orbiting the sun left over from when the solar system was created

19
Q

Mercury

A
  • a rocky inner planet

- first from the sun

20
Q

Venus

A
  • rocky inner planet

- second from the sun

21
Q

Mars

A

A rocky inner planet

-fourth from the sun

22
Q

Terrestrial

A

-made from rock

23
Q

Gas giant

A
  • outer planets in the solar system
  • coldest planets
  • larger
  • made from mainly gas
24
Q

Dwarf planet

A

-small lump of rock in orbit around the sun

25
Q

Gravity

A
  • non contact force that acts between two masses

- hold planets in orbit

26
Q

How many inner and outer planets are there name from order

A
  • four inner and four outer planets

- Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus , Neptune

27
Q

Where is the asteroid belt

A

Between Mars and Jupiter

28
Q

Inner planets qualities

A
  • all terrestrial
  • Mercury does not have an atmosphere
  • Venus is the hottest as it has an atmosphere of co2
29
Q

Outer planets qualities

A
  • a lot bigger and colder
  • many moons in orbit around them
  • made up of mainly gases like helium and hydrogen
30
Q

Where do comets come from

A

-believed to come from beyond the Kuiper belt in a region called Oort Cloud