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- # this is a comment is a Q&A file
-
- .Cosmology and the Infinitesimal
-
- #This first number is the number of questions:
-
- 37
-
- #now are the questions
-
- #77
- M:2 3
- <
- The two Voyager spacecrafts that have
- left the solar system contained gold
- plated records (CDs were not yet
- available) with a variety of different
- sounds from our planet. What was the
- title of the record?
- >
- 1. Earth Says Hello.
- 2. The Sounds of Earth.
- 3. Earth: A Distant Greeting.
-
-
- #78
- M:3 4
- <
- In spite of our primitive interstellar
- technology, our radio telescopes are
- capable of communicating with planets
- at great distances. How far away could
- a planet be and still pick up an Earth
- signal?
- >
- 1. 10 light years.
- 2. 1200 light years.
- 3. 15,000 light years.
- 4. 1 million or so light years.
-
-
- #79
- M:1 3
- <
- How close must another civilization be
- to the Earth to know that we humans are
- here, inhabiting the Earth?
- >
- 1. 40-50 light years due to TV signals.
- 2. 1000 light years with good telescopes.
- 3. They simply cant know we are here.
-
-
-
- #80
- M:3 3
- <
- How fast do radio signals travel?
- >
- 1. about as fast as sound in a vacuum.
- 2. about 1/2 the speed of light.
- 3. the same as the speed of light.
-
-
- #81
- M:2 3
- <
- How much faster is light than the
- fastest Earth spaceships?
- >
- 1. light is 1000 times faster.
- 2. light is 10,000 times faster.
- 3. light is 1 million times faster.
-
-
- #82
- M:1 3
- <
- How large is the largest single radio antenna
- on Earth?
- >
- 1. 1000 feet across.
- 2. 100 feet across.
- 3. about 50 feet across.
-
-
- #83
- M:3 4
- <
- How many stars are there in the Milky
- Way, our own galaxy?
- >
- 1. about 1 million.
- 2. about 1 billion.
- 3. about 500 billion.
- 4. about 1 trillion.
-
-
- #84
- Y:Y
- <
- With billions of stars here in the Milky
- Way galaxy alone, not counting a
- billion other galaxies, is it likely
- there is other life in the universe?
- >
-
-
- #85
- M:3 3
- <
- Space is mostly empty, but there is
- still much out there. How many stars
- exist within just 100 light years of
- earth in any direction? (Keep in mind
- there are 500 billion stars in the
- Milky way, which is 70,000 light years
- across.)
- >
- 1. about 10.
- 2. about 1000.
- 3. about 50,000.
-
-
- #86
- M:2 4
- <
- How many large continents exist on the
- planet Venus?
- >
- 1. 1.
- 2. 2.
- 3. 5.
- 4. 7.
-
-
- #87
- M:1 4
- <
- What is a Black Hole?
- >
- 1. a singularity in the space/time continuum.
- 2. a 'hole' to some other place.
- 3. an area of hyper dense matter.
- 4. a star that shines black.
-
-
- #88
- M:4 4
- <
- How small can a black hole be?
- >
- 1. as small as a sun.
- 2. as small as a big planet like Saturn.
- 3. as small as a tiny planet like Pluto.
- 4. tiny, maybe just a few miles across.
-
-
- #89
- M:2 3
- <
- How heavy would a teaspoon of black
- hole material be?
- >
- 1. about as heavy as a teaspoon of led.
- 2. about as heavy as the moon.
- 3. about as heavy as the sun.
-
-
- #90
- M:2 3
- <
- What makes a Black Hole?
- >
- 1. condensing cosmic dust.
- 2. maybe a large condensing dying star.
- 3. we have no idea.
-
-
- #91
- M:1 3
- <
- Do Black Holes really exist?
- >
- 1. we don't know, but we think so.
- 2. yes.
- 3. no.
-
-
- #92
- M:1 3
- <
- Why are they called 'Black' Holes?
- >
- 1. Because light can't escape.
- 2. because they are black in color.
- 3. because we have never really seen one.
-
-
- #93
- M:1 4
- <
- What is 'escape velocity'?
- >
- 1. the speed to leave Earth's gravity.
- 2. the speed of sound.
- 3. the speed of light.
- 4. the speed of the space shuttle.
-
-
- #94
- M:3 4
- <
- Escape Velocity is the speed you must
- travel to leave the gravitation
- influence of the Earth. This means you
- would go on into outer space forever.
- How fast is escape velocity?
- >
- 1. 1 meter per second.
- 2. 1000 meters per second.
- 3. 11,000 meters per second.
- 4. 1 million meters per second.
-
-
-
- #95
- M:3 4
- <
- The Earth travels in an elliptical orbit
- around the sun. Sometimes it is close
- to the sun and sometimes it is further
- away. How far away, on average, is the
- sun?
- >
- 1. 100,000 miles.
- 2. 15 million miles.
- 3. 92 million miles.
- 4. 1 billion miles.
-
-
-
- #96
- M:2 4
- <
- How long does it take light to get
- here from the sun?
- >
- 1. light gets here almost instantly.
- 2. about 8 minutes.
- 3. about 1 month.
- 4. about 7.6 years.
-
-
-
- #97
- M:1 4
- <
- How far away is the moon from the
- Earth?
- >
- 1. about 240,000 miles.
- 2. about 500,000 miles.
- 3. about 10 million miles.
- 4. about 100 million miles.
-
-
-
- #98
- M:3 4
- <
- If the Earth has a diameter of approx.
- 8000 miles, how big is the
- diameter of Jupiter, the largest
- planet in the solar system?
- >
- 1. 10,000 miles.
- 2. 50,000 miles.
- 3. 90,000 miles.
- 4. 130,000 miles.
-
-
-
- #99
- M:3 4
- <
- It takes Earth one year to go around
- the Sun. It takes Mercury 87 days to
- go around the Sun. How long does it
- take Jupiter to go around the sun?
- >
- 1. 2 years.
- 2. 6 years.
- 3. 11 years.
- 4. 25 years.
-
-
-
- #100
- M:3 3
- <
- If the average distance that the Earth
- is from the Sun is 92 million miles,
- what do you suppose that distance is for
- Pluto, the planet furthest from the Sun?
- >
- 1. 100 million miles.
- 2. 1 billion miles.
- 3. over 3 billion miles.
-
-
-
- #101
- M:4 5
- <
- How many planets are there in the solar
- system?
- >
- 1. 3 planets.
- 2. 5 planets.
- 3. 7 planets.
- 4. 9 planets maybe 10 (planet X).
- 5. 14 planets.
-
-
-
- #102
- M:2 3
- <
- If the diameter of the Earth is 8000
- miles, what is the diameter of the
- moon?
- >
- 1. 200 miles.
- 2. 2000 miles.
- 3. 4500 miles.
-
-
-
- #103
- Y:N
- <
- Is Saturn the only planet to have rings?
- >
-
-
- #104
- M:1 3
- <
- What is the study of cosmology?
- >
- 1. study of the nature of the universe.
- 2. study of stars.
- 3. study of planets.
-
-
-
- #105
- M:3 3
- <
- Edmund Halley is the astronomer that
- Halley's comet is named after. It
- was named after Halley because Halley
- was the first person to predict the
- comet's return to Earth by calculating
- how long it had been gone between
- previous visits. How long does it
- take Halley comet to complete 1 orbit?
- >
- 1. 3 years.
- 2. 48 years.
- 3. 76 years.
-
-
-
- #106
- M:3 4
- <
- How big is the average comet?
- >
- 1. about the size of a baseball.
- 2. about the size of an aircraft carrier.
- 3. about a half mile across.
- 4. about the size of a large city.
-
-
-
- #107
- M:1 4
- <
- What are comets made of?
- >
- 1. most are made of ice.
- 2. most are just gas.
- 3. most are made of iron.
- 4. no one knows for sure.
-
-
-
- #108
- M:1 3
- <
- Halley's comet is relatively big,
- about 16 miles across but it's tale
- stretches thousands of miles into space
- behind it. What is the tale made of?
- >
- 1. evaporating ice as it nears the sun.
- 2. dust pulled by other planets gravity.
- 3. dust randomly flying into space.
-
-
-
- #109
- M:3 3
- <
- Why does the moon have many visible
- pockmarks from collisions while the
- Earth has only a few?
- >
- 1. the moon mostly protects the Earth.
- 2. the moon is statistically unlucky.
- 3. the moon does not have erosion.
-
-
-
- #110
- M:2 3
- <
- How often, on average, will the Earth be
- struck by a large comet?
- >
- 1. once every 150 years on average.
- 2. once every billion years or so.
- 3. no one know for sure.
-
-
-
- #111
- M:3 3
- <
- If the moon is unlikely to be hit by a
- big comet except for every several
- million years, why are there so many
- visible craters on its face?
- >
- 1. the moon is a statistical anomaly.
- 2. the moon has a strong gravity.
- 3. the moon is very very old.
-
-
- #112
- Y:Y
- <
- A large comet hitting the Earth
- millions of years ago is rumored to
- have caused the extinction of the
- dinosaurs. Is clear cutting of rain
- forests just as bad as a comet
- collision?
- >
-