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Sec 3 Science > Space, planets, etc. > Flashcards

Space, planets, etc. Flashcards

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1
Q

What is our galaxy called?

A

The milky way

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2
Q

How long ago was the big bang?

A

13.8 billion years ago.

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3
Q

How many km is an astronomical unit?

A

150 million km.

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4
Q

What is the distance between us and the closest planet to us (Venus)?

A

40 million km.

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5
Q

What is the distance between us and the sun?

A

1 astronomical unit.

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6
Q

What is the astronomical unit used for?

A

To measure distances inside our solar system.

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7
Q

What is a light year used to measure?

A

Distances outside our solar system.

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8
Q

How many km is a light year?

A

9460 billion km.

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9
Q

What is the sun?

A

A flamming ball of gas.

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10
Q

What is the closest galaxy to us?

A

Andromeda.

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11
Q

What is the mneomic device used to remeber the plantets in order?

A

My Very Excellent Mother Just Served Us Nachos.

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12
Q

What is the dwarf planet?

A

Pluto.

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13
Q

What is the most accepted theory as to how the universe was created?

A

The Big Bang Theory.

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14
Q

What is a nebula?

A

A cloud of gas that will form a star.

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15
Q

What makes life on earth possible?

A

Water, The ideal size of the planet, a lithosphere (the solid surface we stand on), to be in the habitable zone, a circular orbit (so the heat of the sun is evenly distributed) and an atmosphere.

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16
Q

What is pasteurization?

A

Partial sterilization of liquids such as milk, wine, orange juice and beer.

17
Q

How does pasteurization work?

A

Heat the liquid to a certain temperature to get rid of harmful organisms then rapidly cool it, to not spoil it.

18
Q

What did Miller and Urey try to re-create?

A

The atmosphere of the early Earth.

19
Q

What are the gases Miller and Urey used in their experiment to mimic the early Earth?

A

Methane, ammonia, hydrogen and water.

Sec 3 Science (9 decks)

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