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SCI 151 Final Exam Set 1


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Please check all question included in this tutorial below
        SCI 151 Final Exam Guide Set 1
1.    The Sun, Moon, and the Planets follow an imaginary line through the sky called the ecliptic. The reason for the ecliptic is that
2.    The Star Betelgeuse is classified as aREDSUPERGIANTTypestar . This star is locatedabout  _____640__ Light years from Earth. The color of the star as seen from Earth is ORANGE- RED. It is part of the constellation ORION  .
3.    Select the best answer. When it is December 21 on Earth.
4.    When the Earth lies directly between the Moonand the Sun the Phase of the Moon at that time is called NEWand it is possible at that time to have an event called a SOLAREclipse.
5.    Why does the planet Mercury have many visible craters, yet the Earth’s land areas have few visible craters.
6.    The Tides on Earth tend to be weakest, that is lowest change from low to high tide, when the Sun and the Moon
7.    When the Earth’s core comprised of metallic elements eventually solidifies this will result in a dramatic decrease of the Earth’s MAGNETICfield compared to today. If the Earth’s rotational speed decreased the Earth magnetic field would  DECREASE ( Select increase or decrease)
8.    Select the item below that represents increasing distance from the Sun for each celestial body listed
9.    Scientifically speaking, Earth Quakes and Volcanoes on our planet are caused by
10.    Based on our studies of the Solar system, the planet most likely to harbor life today, not including Earth is____. Also the Jovian moon _____ is also a candidate finding life, due to the likelihood of it having liquid water oceans

11.    The Planet Marsatit’s closest distance from the sun is1.38 AU.  1 AU equals 149,597,871 Kilometers?
12.      Gravitation Tidal Forces on the Moon Io comes from the Planet JUPITER and the resultant heating leads to the phenomena of TIDAL HEATING
13.    1 AU (Astronomical Unit) divided by the speed of light is .12 A/U minutes. If the Earth-Jupiter Distance is 5.2 AUs,   it would take 96 minutes for a command signal from Earth to reach a Robotic probe orbiting Jupiter.
14.    The estimated distance between the Milky Wayand next nearest major galaxy is approximately 2.5 million Light Years. What is the name of that Galaxy? Andromeda
15.     The Milky Way will collide with Andromeda in about 500 Million Years. How fast are these galaxies approaching each other.  Give your answer in units of meters / second.111,760 m/s
16.    The maximum number of Watts of sunlight that could hit a 20meter x 100 meter  plot of land on the equator is approximately 2,720,000 watts.
17.     In Miami FLorida, the angle of elevation angle of Polaris is 25degrees.Given the choices below highlight the City where the North star is never visible
18.    If you were standing on the Moon’s Equator observing the Earth would the position of the Earth in the Moon’s sky change substantially over a period of 29 days? NO. The phenomena responsible for the orbital period of the Moon exactly equaling the rotation period is called SYNCHRONOUSrotation. 19.    Due to friction caused by the Tides, with each passing year
20.    Which statement below best describes the Aurora Phenomena
21.    Dark Matter particles are assumed  to
22. Which one of the following would you consider to be most at odds with respect to the nebula theory of planet formation, considering the following scenarios for stars with planets
23. It is estimated that large global extinction level asteroid, such as the one that destroyed the dinosaurs collides with Earth approximately every
24. Many Asteroids are composed primarily of
25.Which statement about light is true
26. Due to the Doppler Effect, if an object is moving away from you, the light the objects emits will appear to you to be
27. The Hubble Space telescope
28. The Core of the Sun
29. The Nuclear Reaction in the Sun’s core is called
30. The star Polaris is a best characterized as a
31.The Measured Brightness of a star is
32. The center of the Milky Way is
33.  As two Galaxies collide the process will likely
34. The Big Bang Model does not explain
35.Which type of telescope works through detecting thelowest energy type ofElectromagnetic Radiation
36.Describe one extremophiles on Earth that we studied in Week-5. Explain why the existence of these organisms increase the possibility of life outside of Earth? (100 words)
37.  You have a powerful laser beam that you can use to measure distances to objects near Earth. The laser beam is a short pulse. You aim the laser beam at a far-away object and at time t = 0 you trigger a pulse. You measure the arrival of the return pulse that reflects off the object to be approximately 1300 seconds later, t = 1300 seconds. How far away is the object? Could that object be a planet?
38. Two high luminosity stars named for this example as Gamma and Psi have the same Luminosity and Surface Temperature. Star Gamma is 60 L-Y away from the Sun and Star Psi is 900 L-Y away from the Sun. Which star will appear brighter in our Night Sky, Gamma or Psi? How many times brighter would the brighter star appear compared to the dimmer star?
39. Mars is about 1.5 AU from the Sun and is about 1/9th the mass of Earth. Using Newton’s Law of Gravitation estimate how much weaker the Sun’s Gravitational pull, that is force, is on Mars, Fmars,  than it is on Earth, Fearth
40. Estimate the Surface area of the event horizon of a Black Hole of 100 Solar Masses. Assume the black hole does not spin. How does this compare to the Surface area of the Earth?

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