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Science Revision > Space > Flashcards

Space Flashcards

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Biology 101 flashcards
1
Q

Astronomy

A

The science that deals with the universe beyond the Earths atmosphere

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2
Q

Celestial Bodies

A

Naturally made object outside the Earths atmosphere

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3
Q

Star

A

A celestial body that generates its own light and heat and consists of a mass of gas held together by its own gravity

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4
Q

Planet must haves

A
  1. Orbit around a star. 2. Have enough mass to form a round shape. 3. Clears the region around its orbit.
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5
Q

Moon

A

A natural satellite of a planet

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6
Q

Astroids

A

A small rocky body orbiting the sun

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7
Q

Comets

A

A dusty snowball which orbits the sun

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8
Q

Solar system

A

A group of celestial bodies that orbit around a star.

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9
Q

Galaxy

A

A large systems of stars held together by gravity and isolated from similar systems by vast regions of space.

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10
Q

Nearest galaxy

A

Andromeda

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11
Q

Who came up with the big bang?

A

Georges Lemaitre

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12
Q

When did the big bang begin?

A

13.7 billion years ago

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13
Q

What happened after the universe in its bubble exploded?

A

Time, space and matter all began

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14
Q

What happened after the universe grew into a galaxy

A

Protons, neutron and electrons were formed

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15
Q

What happened 300,00 years after ?

A

The temperature dropped enough to allow other elements to form

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16
Q

After 1 billion years?

A

Giant clouds and atoms were pulled together by gravity to make the first galaxies and stars.

17
Q

After 5 Billion years

A

First stars die, they explode and gathered to form planets and plantery systems

18
Q

After 10 billion years

A

Life on earth began

19
Q

13.7 billion years on

A

We have life on earth as we on it.

20
Q

20 billion years

A

Life on earth will become impossible

21
Q

Light years

A

Seeing something that happened in the past.

22
Q

Gravity

A

The force by which a planet or other body draws objects towards it centre.

23
Q

Mass

A

Mass is defined as the amount of matter in a substance

24
Q

Weight

A

The weight of an object is a measure of the force of gravity on it

25
Q

Calculating weight

A

Mass x gravity

Science Revision (11 decks)

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