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Science - PUB QUIZ / dinner chat > Science - space / astronomy - PUB QUIZ / dinner chat > Flashcards

Science - space / astronomy - PUB QUIZ / dinner chat Flashcards

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1
Q

How many KM in one light year?

A

9 trillion kilometres (approx)

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2
Q

What is the diameter of our solar system?

A

8 light hours (9 billion km) (approx)

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3
Q

What is the diameter of the milky way (earth’s galaxy).

A

100,000 light years (1 quintillion km) (approx)

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4
Q

What is the closest major galaxy to ours?

A

Andromeda

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5
Q

How far is the closest major galaxy to ours?

A

2.5 million light years.

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6
Q

What galaxy does earth belong to?

A

Milky Way

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7
Q

The size of our observable universe?

A

About 90 billion light years end-to-end (diameter)

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8
Q

Do galaxies expand?

A

No, galaxies don’t expand - but space is expanding, therefore moving galaxies further away.

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9
Q

What is cosmological redshift?

A

Shows the expansion of the universe?

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10
Q

Red light wavelength - is it longer or shorter?

A

Longer - being stretched

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11
Q

Blue light wavelength - is it longer or shorter?

A

Shorter - coming closer

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12
Q

When was the Big Bang?

A

13.8 billion years ago (according to cosmological redshift theory)

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13
Q

What is a white dwarf?

A

The stage of a star dying before becoming a black dwarf.

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14
Q

What is a black hole?

A

A black hole is a place in space where gravity pulls so much that even light can not get out.

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15
Q

What height does a NASA astronaut have to be?

A

Between 4ft11 (4’11) and 6ft3 (6’3)

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16
Q

How many months would it take to get to Mars?

A

8 months at zero G one way.

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17
Q

What part of the human anatomy have many astronauts reported permanent damage to?

A

The eye / eyeballs/ vision. But, so far only men have experienced this?

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18
Q

Why are woman only allowed 1/2 the amount of lifetime spacetime that men are?

A

Because of radiation. Women have twice the risk of radiation induced cancer than men do.

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19
Q

What was Mercury 13?

A

13 American women who underwent the same physiological screening tests as the astronauts who were being selected for Mercury Project.
The men were later called mercury 7.
The women results showed stronger/ better psychological responses to isolation.

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20
Q

Why would it be cheaper to send women to Mars than men?

A

Women require LESS FOOD than male astronauts to undertake the same activities.
- less food = less propellant.

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21
Q

What is the largest planet in the solar system?

A

Jupiter

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22
Q

What is going to happen on December 7th 2015?

A

The moon & venus will be visible during the day-time. - There will be an occultation.

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23
Q

When is Haley’s comet next coming?

A

In mid 2061.

Last appeared in 1986.

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24
Q

In our solar system - what is the hottest planet, the coldest planet and can be the closest planet to earth?

A

Venus

25
Q

How many years between each visit of Halley’s comet?

A

75-76 years.

26
Q

When was Halley’s comet first recorded?

A

240 BC

27
Q

When was Halley’s comet named? & why?

A

In 1705.

Named for English astronomer Edmond Halley, because he was the first one to figure out it periodicity.

28
Q

What is Vega?

A

A star. 25 light years from earth.

Vega was earths north star in 1200 BC & will be again in 14–AD.

29
Q

What is Deneb?

A

A star. 60,000 times as bright as our sun.
It’s 110 times bigger than our sun.
But, its 3,000 light years away from earth.

30
Q

What is Altair? How fast does Altair rotate?

A

A star. It rotates once every 9 hours. Fastest rotating star in our solar system.

Its 2x as big as the sun.

Altair looks like an M&M because of its rapid spinning.

31
Q

How many days does it take for the SUN to rotate?

A

26 days.

2km per second at its equator.

32
Q

What star is at the bottom of Orion? (of Orion’s belt?

A

Rigel.

33
Q

What stars are in the Gemini Twins?

A
  1. Castor (head of gemini) - actually a group of 6 stars.

2. Pollux (head of gemini) - actually 2 stars rotating around each other.

34
Q

What is the dog star?

A

Sirius. It’s only 8 years away.

35
Q

What is our north star?

A

Polaris.

It is actually multiple stars together.

36
Q

What is a shooting star?

A

The gases in our earths atmosphere that react as a piece of space debris (the size of a grain of sand, or a pebble) is about to hit our earth.

37
Q

How many times a year are there meteor showers?

A

About 12 times a year.

38
Q

What meteor shower happens in November every year?

A

Leonid meteor shower.

39
Q

Describe the comet Tempel-tuttle.

A

A comet that visits the sun every 33 years.

Its debris is linked to the November Leonid meteor shower.

40
Q

Is Venus or Mars closer to earth?

A

Venus.

41
Q

What are the three brightest objects in our sky?

A
  1. Sun
  2. Moon
  3. Venus
42
Q

What is 96% of Venuses atmosphere?

A

Carbon Dioxide.

43
Q

Venus is hot.. What is Mars?

A

Cold.

44
Q

In September 2015 what did Nasa discover?

A

That Mars had water on its surface.

45
Q

What kind of water is on Mars?

A

Brine. Salty water.

May have killed microbes - killed organisms.

46
Q

Why is the gravity in a black hole so strong?

A

Because matter has been squeezed into a tiny space.

47
Q

What can cause a black hole?

A

This can happen when a star is dying.

48
Q

Can you see a black hole?

A

No.

Because no light can get out, people can’t see black holes. They are invisible.

49
Q

What happens when a huge star dies?

A

The star’s gravity causes it to collapse, and then it explodes into a supernova.

What’s left of the core can form a neutron star or a black hole

50
Q

What is a supernova?

A

An exploding star.

51
Q

How many planets in our solar system?

A

EIGHT, not nine.

52
Q

In 2006 - what happened to Pluto?

A

It was renamed as a dwarf planet.
So, instead of 9 planets, we now have 8.

  • This was a highly controversial decision, the International Astronomical Union
53
Q

List the planets in our solar system (by distance from sun).

A

Martians Very Excited May Jump Ship Until Next-time.

  1. Mercury,
  2. Venus,
  3. Earth,
  4. Mars,
  5. Jupiter,
  6. Saturn,
  7. Uranus,
  8. Neptune.
54
Q

What is closer - the moon or the sun?

A

The moon.

About 300 times closer than the sun.

55
Q

What is bigger - the moon or the sun?

A

The sun.

About 300 times bigger than the moon.

56
Q

What is the nickname of Jupiter?

A

The giant planet.

- its the largest planet in our solar system

57
Q

How far is Jupiter from the sun?

A

1/2 a billion miles from the sun

58
Q

What gases are on Jupiter?

A

Hydrogen (84%) & 14% Helium

59
Q

Why is a human space mission to Jupiter unlikely?

A

Because it is mainly gas. You would descend through the gas & keep descending & eventually be crushed by the atmosphere.
- plus the radiation is horrendous. instant death for a human.

Science - PUB QUIZ / dinner chat (1 decks)

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