Astronomy Final Test 1

40 Questions  I  By Brentzel
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Astronomy Quizzes & Trivia

  
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  • 1. 
    What observation did the ancient Greek astronomers try to search for to prove a heliocentric Solar System?
    • A. 

      Stellar parallax

    • B. 

      The tides

    • C. 

      The seasons

    • D. 

      Synchronous rotation


  • 2. 
    How does the force of gravity of the Sun on Mars compare to the force of gravity of Mars on the Sun?
    • A. 

      The sun pulls more strongly on Mars than Mars pulls on the Sun

    • B. 

      Mars pulls more strongly on the Sun than the Sun pulls on Mars

    • C. 

      The pull with equal strengths

    • D. 

      They are too far apart to have a force of gravity between them


  • 3. 
    If we observe one edge of a planets to be redshifted and the opposite edge to be blueshifted, what can we conclude about the planet? 
    • A. 

      The planet is in the process of falling apart

    • B. 

      The planet is rotating

    • C. 

      The planet is actually two bodies, one moving toward us, the other away from us

    • D. 

      The planet is in the process of formation


  • 4. 
    The purpose of science as discussed in class is
    • A. 

      To describe and understand the order present in nature

    • B. 

      To discover the absolute truth about nature

    • C. 

      To achieve the fame and fortune that all scientists deserve

    • D. 

      None of the above

    • E. 

      To prove the already-existing theories about the Universe


  • 5. 
    Which property of stars cannot be determined from our model of the Celestial Sphere?
    • A. 

      Their distance

    • B. 

      Their location in the sky

    • C. 

      Their motion over the course of a single night

    • D. 

      Their motion over the course of a year

    • E. 

      None of the above (they all can)


  • 6. 
    All of the following statements are true. Which one follows directly from Kepler's 3rd Law?
    • A. 

      Venus orbits the Sun at a slower average speed than Mercury

    • B. 

      Venus is more massive than Mercury

    • C. 

      Venus has a thicker atmosphere than Mercury

    • D. 

      Venus takes longer to rotate than it does to orbit the Sun


  • 7. 
    Why are astronauts weightless in the Space Station?
    • A. 

      Because the Space Station is traveling so fast

    • B. 

      Because the Space Station is moving at a constant velocity

    • C. 

      Because there is no gravity in space

    • D. 

      Because the Space Station is constantly in free-fall around Earth


  • 8. 
    The entire range of light is called the
    • A. 

      Visible light

    • B. 

      Rainbow

    • C. 

      Electromagnetic Spectrum

    • D. 

      All of the above


  • 9. 
    To be scientifically valid, and experiment should 
    • A. 

      Be repeatable

    • B. 

      Have only one possible outcome

    • C. 

      Involve as a few test objects as possible

    • D. 

      Prove the hypothesis beyond a shadow of doubt

    • E. 

      None of the above


  • 10. 
    The Milky Way feature in the sky shows that the shape of our Galaxy is
    • A. 

      A sphere

    • B. 

      A rectangle

    • C. 

      A flat disk

    • D. 

      Changing with time

    • E. 

      Unknowable


  • 11. 
    Why did Copernicus' model of the Solar System do no better in predicting the position of the planets than the ancient Greeks?
    • A. 

      Because he did not know about the existence of Uranus and Neptune

    • B. 

      Because he still had the planets revolving in circular orbits around the Sun

    • C. 

      Because he still had place Earth at the center of the Solar System

    • D. 

      Because he did not allow the planets to rotate around their axis

    • E. 

      None of the above


  • 12. 
    If you wanted to increase the force of gravity between to objects you could
    • A. 

      Decrease the mass of one of the objects

    • B. 

      Increase the distance between the objects

    • C. 

      Increase the size of one of the objects while keepings its mass constant

    • D. 

      Decrease the distance between the objects

    • E. 

      All of the above


  • 13. 
    The color of light is determined by
    • A. 

      Speed

    • B. 

      Amplitude

    • C. 

      Brightness

    • D. 

      Location

    • E. 

      None of the above


  • 14. 
    Which of the following scientific terms encompasses the most verified information
    • A. 

      A hypothesis

    • B. 

      A law

    • C. 

      A theory

    • D. 

      A principle

    • E. 

      An experiment


  • 15. 
    Stars rise in the east and set in the west over the course of a single night due to 
    • A. 

      The motion of the Sun in the celestial sphere

    • B. 

      The rotation of Earth around its own axis

    • C. 

      The revolution of the Earth around the Sun

    • D. 

      The physical motion of the stars through space

    • E. 

      None of the above


  • 16. 
    The orbit of each planet around the Sun is a(n)
    • A. 

      Circle

    • B. 

      Figure 8

    • C. 

      Ellipse

    • D. 

      S-curved path

    • E. 

      None of the above


  • 17. 
    Suppose the Sun shrank in size but its mass remained the same. What would happen to the orbit of the Earth?
    • A. 

      Earth's orbit would expand, and it would take more than one year to orbit the Sun

    • B. 

      Earth would change from a bound orbit to and unbound orbit and fly off into in stellar space

    • C. 

      The size of Earth's orbit would shrink and it would take less than one year to orbit the Sun

    • D. 

      Earth's orbit would not be affected


  • 18. 
    A spectrume that has a rainbow background with black lines in it is called
    • A. 

      The Electromagnetic Spectrum

    • B. 

      A continuous spectrum

    • C. 

      An absorption spectrum

    • D. 

      An emission spectrum

    • E. 

      None of the above


  • 19. 
    Only one of the following statements used the term theory in its correct scientific sense, what is it?
    • A. 

      I have a new theory about the cause of earthquakes, I plan to test it soon

    • B. 

      Evolution is only a theory, so there is no reason to think it actually happened

    • C. 

      Einstein's theory of relativity has been tested and verified thousands of times

    • D. 

      I wrote a theory that is 152 pages long


  • 20. 
    Earth's rotation axis is tilted by 23.5 degrees with respect to Earth's orbit around the Sun. This causes the effect we call
    • A. 

      Synchronous rotation

    • B. 

      Stellar parallax

    • C. 

      The tides

    • D. 

      The seasons

    • E. 

      All of the above


  • 21. 
    Who discovered Jupiter has moons?
    • A. 

      Aristotle

    • B. 

      Galileo

    • C. 

      Tycho Brache

    • D. 

      Kepler

    • E. 

      None of the above


  • 22. 
    Which of the following would require the fastest escape velocity to escapes Earth's gravity and fly off into space?
    • A. 

      A pencil

    • B. 

      An apple

    • C. 

      A person

    • D. 

      An elephant

    • E. 

      They would all require the same escape velocity to escape Earth's gravity


  • 23. 
    Which color star would have the highest temperature?
    • A. 

      An ultraviolet star

    • B. 

      A blue star

    • C. 

      A red star

    • D. 

      A yellow star

    • E. 

      A green star


  • 24. 
    A hypothesis is considered scientific only if it
    • A. 

      Is refutable

    • B. 

      Can be proven

    • C. 

      Uses only ideas that have been verified previously

    • D. 

      Is correct

    • E. 

      All of the above


  • 25. 
    On which of the following days does the Sun rise due east and set due west everywhere on Earth
    • A. 

      The spring equinox

    • B. 

      The summer solstice

    • C. 

      New year's day

    • D. 

      The winter solstice

    • E. 

      The sun rises due east and sets due west everywhere on the Earth everyday of the year


  • 26. 
    According to Kepler's Laws, when does a planet move fastest in its orbit around the Sun?
    • A. 

      When a planet is nearest to the Sun

    • B. 

      When the planet is furthest from the Sun

    • C. 

      When it is in apparent retrograde motion

    • D. 

      Whenever its distance form the Sun exceeds 1 AU

    • E. 

      A planet always orbits the Sun with a constant speed


  • 27. 
    Which of the following best describes the origin of ocean tides on Earth?
    • A. 

      Tides are caused by the difference in the force of gravity exerted by the Moon across the sphere of Earth

    • B. 

      Tides are caused by the 23.5-degree tilt of Earth's rotational axis to the ecliptic plane

    • C. 

      Tides are caused on the side of Earth nearest the Moon because the Moon's gravity attracts the water

    • D. 

      The Moon's gravity pulls harder on water than on land, because water is less dense

    • E. 

      None of the above


  • 28. 
    The light from an object can help astronomers determine
    • A. 

      What the object is made of

    • B. 

      The temperature of the object

    • C. 

      How fast the object is moving

    • D. 

      Whether the object is moving toward or away from the Earth

    • E. 

      All of the above


  • 29. 
    Which of the following statements about scientific theories in NOT true?
    • A. 

      A theory must make predictions that can be checked by observation or experiment

    • B. 

      If even a single new fact is discovered that contradicts what we expect according to a particular theory, then the theory is revised or discarded

    • C. 

      A theory is a model designed to explain a number of observed facts

    • D. 

      A theory can never be proved beyond all doubt; we can only hope to collect more and more evidence that might support it

    • E. 

      A theory cannot be taken serious by scientists if it contradicts other theories developed by scientists over the past several hundred years


  • 30. 
    Which of the following is NOT one of, nor a direct consequence of, Kepler's Laws?
    • A. 

      As a planet moves around its orbit, it moves faster when nearer the Sun and slower when more distant

    • B. 

      The force of attraction between any two objects decreases as the distance between them increases

    • C. 

      More distant planets orbit the Sun at slower speeds

    • D. 

      The orbit of each planet is an ellipse with the Sun at one focus

    • E. 

      They all are part of Kepler's laws


  • 31. 
    Which one explains the reason there are not eclipses every month?
    • A. 

      The moon is only about one fourth as large as the Earth in diameter

    • B. 

      The orbit of the Moon is slightly tilted (by about 5 degrees) with respect of Earth's orbit around the Sun

    • C. 

      The Mon goes through a complete cycle of phases about every 29.5 days

    • D. 

      Eclipses can only occur when the Sun is between the Moon and the Earth

    • E. 

      None of the above


  • 32. 
    When do the highest tides occur?
    • A. 

      At night

    • B. 

      At noon when the Sun is highest in the Sky

    • C. 

      During the full moon phase

    • D. 

      On the first day of summer

    • E. 

      None of the above


  • 33. 
    Say a yellow star was moving toward Earth at a very high speed. What color might it appear to an astronomer on Earth?
    • A. 

      Red

    • B. 

      Infraraed

    • C. 

      Orange

    • D. 

      Green

    • E. 

      Yellow (no color change at all)


  • 34. 
    On what day is South Carolina in direct Sunlight?
    • A. 

      The spring equinox

    • B. 

      The fall equinox

    • C. 

      The winter solstice

    • D. 

      The summer solstice

    • E. 

      It receives the same amount everyday of the year


  • 35. 
    Who discovered the universal law of gravity?
    • A. 

      Albert Einstein

    • B. 

      Galileo

    • C. 

      Kepler

    • D. 

      Newton

    • E. 

      None of the above


  • 36. 
    Suppose that star X and Star Y both have redshifts, but Star X has a larger redshift than Star Y. What can you conclude
    • A. 

      Star X is moving away from us and Star Y is moving towards us

    • B. 

      Star Y is moving away from us faster than Star X

    • C. 

      Star X is hotter than Star Y

    • D. 

      Star X is moving away from us faster than Star Y

    • E. 

      Star X is coming toward us faster than Star Y


  • 37. 
    A lunar eclipse occurs when
    • A. 

      Earth passes through the Moon's shadow

    • B. 

      The Moon is in the new moon phase and the Moon is at the north celestial pole

    • C. 

      The Moon is between the Sun and Earth

    • D. 

      The Moon is in the full moon phase and the Moon is on the ecliptic

    • E. 

      None of the above


  • 38. 
    Which of the following is NOT a way that light and matter interact?
    • A. 

      Absorption

    • B. 

      Evaporation

    • C. 

      Scattering

    • D. 

      Transmission

    • E. 

      Emission


  • 39. 
    What causes the apparent retrograde motion of the planets?
    • A. 

      When planets are farther away from the Sun, they move slower then when they are nearer the Sun; it is during this slower period that they appear to move backwards

    • B. 

      As Earth passes another planet, its gravitational pull slows down the other planet so that it appears to be traveling backward

    • C. 

      The other planets never really appear to move backward; the background stars shift due to Earth's revolution around the Sun

    • D. 

      Apparent retrograde motion is an illusion created by turbulence in the Earth's atmosphere

    • E. 

      As Earth passes another planet, the other planets appears to move backward with respect o the background stars, but the plant's motion does not really change


  • 40. 
    From a laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 121.6 nm. The spectrum of a particular star show the same hydrogen line appearing at a wavelength of 121.8 nm. What can we conclude?
    • A. 

      The star is moving away from us

    • B. 

      The star is getting hotter

    • C. 

      The star is getting colder

    • D. 

      The "star" is actually a planet

    • E. 

      The star is moving towards us


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