universe

Based on an experiment, a cosmologist has proposed a new theory to explain the origin of the universe. The theory will be accepted when its results match with the Big Bang Theory the experiment gives different data every time it is repeated its results are repeated and verified by scientists worldwide the experiment rejects all old theories on the origin of the universe Question 2 (Multiple Choice Worth 2 points) [OU.01]The picture below shows the position of Earth and two stars. Image of Earth and two stars. Star 1 is to the right of Earth, and Star 2 is a little to the right of Star 1. Star 2 is 52 light years from Earth and 18 light years from Star 1. If Star 1 explodes as a supernova, in how many years would the explosion be seen from Earth? 18 34 52 70 Question 3 (Multiple Choice Worth 2 points) [OU.02H]The star named Sirius has a declination of approximately -16°. In what direction is Sirius located from the celestial equator? east west north south Question 4 (Multiple Choice Worth 2 points) [OU.04]One student made a science model with a balloon having many spots on it. The balloon was blown up gradually as shown below. A girl blowing up a balloon with dots on it. The dots are close together and concentrated in one area before the balloon is blown up. As the balloon expands the dots are spread further apart. What is best demonstrated by this model? galaxies move closer when the universe expands density of particles in space decreases when the universe expands gravitational force determines the distribution of matter in the universe gravitational force on galaxies decreases when the universe expands Question 5 (Multiple Choice Worth 2 points) [OU.02]NASA’s space shuttle program in Florida will end in 2011. Which of these statements best predicts the outcome of this event on the people living in locations near the space center? Their rate of employment shall increase. Their profit from local businesses shall increase. Their average household income shall decrease. Their inclination to use space technology in homes shall decrease. Question 6 (Multiple Choice Worth 2 points) [OU.01]Infrared radiations are produced when a changing electric field creates a longitudinal wave parallel to it longitudinal wave perpendicular to it changing magnetic field parallel to it changing magnetic field perpendicular to it Question 7 (Multiple Choice Worth 2 points) [OU.01]Which of these waves has the greatest wavelength? Wave shown with 2 wavelengths. Wave shown with 3 wavelengths. Wave shown with 1 wavelength stretch over a short distance. Wavelength shown with 1 wavelength stretched over a long distance. Question 8 (Multiple Choice Worth 2 points) [OU.01]The diagram below shows the distance traveled by two light waves in 1 second. Two light waves presented over a scale of time, demonstrating the waves over 1 second of time. Wave 1 shows 5 wavelengths occurring over 1 second. Wave 2 shows 10 wavelengths occurring over 1 second. Based on the diagram, which of these conclusions is correct? The wavelength of Wave 1 is double the wavelength of Wave 2. The wavelength of Wave 2 is double the wavelength of Wave 1. The frequency of Wave 1 is four times the frequency of Wave 2. The frequency of Wave 2 is four times the frequency of Wave 1. Question 9 (Multiple Choice Worth 2 points) [OU.04]The picture below shows a galaxy which has a circular shape with most of the objects concentrated around its center. elliptical galaxy Public Domain What type of galaxy is shown in the picture? spiral elliptical irregular barred spiral Question 10 (Multiple Choice Worth 2 points) [OU.03H]Which of these graphs would best model and predict the lifetime of the Sun on the main sequence? A graph comparing Stellar Mass (x-axis) and Main Sequence Lifetime (y-axis). The line graph shows a steep decrease in stellar mass from left to right. A graph comparing Stellar Mass (x-axis) and Main Sequence Lifetime (y-axis). The line graph shows a steep increase in stellar mass from left to right. A graph comparing Stellar Mass (x-axis) and Main Sequence Lifetime (y-axis). The curve shows a steep increase, then a decrease in stellar mass from left to right, peaking at the half-way mark. A graph comparing Stellar Mass (x-axis) and Main Sequence Lifetime (y-axis). The curve shows a steep decrease, then a increase in stellar mass from left to right, showing the lowest point at the half-way mark. Question 11 (Multiple Choice Worth 2 points) [OU.03]Which of these is the best method to measure the distance to a star? measure the red shift of emitted light and use it in calculations use doppler effect to calculate the shift in light traveling from star to Earth in winter use doppler effect to calculate the shift in light traveling from star to Earth in summer calculate the variations in the position of the star due to movement of Earth in its orbit Question 12 (Multiple Choice Worth 2 points) [OU.02]The ozone layer in Earth’s atmosphere absorbs ultraviolet radiations. Which of these is the best location to place a telescope used to observe ultraviolet radiations from stars? space mountain top of building high-flying aircraft Question 13 (Multiple Choice Worth 2 points) [OU.02H]The table below shows the right ascensions of two stars at a location. Name of star Right ascension Star 1 2 hour Star 2 2 hour 30 minutes What is the interval between the times when the two stars rise at the location? 2 hour 30 minutes 2 hour 30 minutes 4 hour 30 minutes Question 14 (Multiple Choice Worth 2 points) [OU.01]One astronomer is using an electromagnetic wave to study the structure of the Milky Way galaxy. The electromagnetic wave has more energy than radio waves but less energy than visible light. What electromagnetic wave is the astronomer using? X-ray Gamma ray Microwave Ultraviolet radiation Question 15 (Multiple Choice Worth 2 points) [OU.04]Two groups of scientists got different results while studying about the origin of the universe. Which of these statements is most likely true about the results of the two groups of scientists? They were not repeated and verified. They provide new testable ideas to strengthen science. They show that the ideas of both groups of scientists are invalid. They prove that it is impossible for all scientists to accept the same theory. Question 16 (Multiple Choice Worth 2 points) [OU.04]The COBE mission and WMAP mission provide evidence to support the Hubble’s Law Big Bang Theory Steady State Theory Doppler Effect Question 17 (Multiple Choice Worth 2 points) [OU.03]The pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, Star 1, Star 2, and Star 3. Image shows 3 blackbody curve graphs. Star 1 peaks at a wavelength of 8500A, Star 2 peaks at 6000A and Star 3 peaks at 3500A. Which of these statements is correct about the temperature of the three stars? Star 2 is hotter than Star 1. Star 2 is hotter than Star 3. Star 1 and Star 2 have the same temperature. Star 1 and Star 3 have the same temperature. Question 18 (Multiple Choice Worth 2 points) [OU.03]Which of these properties of a star best determines its life cycle? brightness mass density temperature Question 19 (Multiple Choice Worth 2 points) [OU.04]Which of these is the most likely reason why the Steady State Theory of origin of the universe has been rejected? it was too old to be used in modern times it was too complicated for scientists to understand scientists found new evidence to prove it invalid scientists discovered a shorter theory to replace it Question 20 (Multiple Choice Worth 2 points) [OU.03]The table below shows the initial masses of four stars. Name of Star Star 1 Star 2 Star 3 Star 4 Initial mass of star (in Solar mass) 9 0.9 5 0.3 Which of these best shows the stars in the increasing order of the time for which they will stay on the main sequence? Star 1, Star 2, Star 3, Star 4 Star 1, Star 3, Star 2, Star 4 Star 4, Star 3, Star 2, Star 1 Star 4, Star 2, Star 3, Star 1 Question 21 (Multiple Choice Worth 2 points) [OU.04]Two stars, Star 1 and Star 2, are at almost equal distances from Earth. The table below shows the masses of the two stars. Name of Star Mass o

f Star (in million solar masses) Star 1 3.61 Star 2 11.73 Which of these statements is most likely correct about the stars? Earth exerts a greater gravitation force on Star 1 than on Star 2. Earth exerts a greater gravitation force on Star 2 than on Star 1. Star 1 attracts Star 2 with a greater gravitational force than Star 2 attracts Star 1. Star 2 attracts Star 1 with a greater gravitational force than Star 1 attracts Star 2. Question 22 (Multiple Choice Worth 2 points) [OU.01]Which of these waves travel the fastest? sound waves in air sound waves in water light waves in water light waves in vacuum Question 23 (Multiple Choice Worth 2 points) [OU.02H]The table below shows the amount of money earned by Florida, in 2007, due to the Kennedy Space Center. Type of Earning Amount earned (in million dollars) Commodities purchased from businesses 703 Income paid to households 1,100 Total direct income 1,800 Based on the table, it can be concluded that Florida’s income from businesses decreases due to the presence of Kennedy Space Center average household income benefits due to earnings from Kennedy Space Center commodities purchased from businesses is its main source of earning from Kennedy Space Center commodities purchased from businesses is the only source of earning from Kennedy Space Center Question 24 (Multiple Choice Worth 2 points) [OU.04]The table below compares three galaxies. 1 2 3 Type of galaxy Shape Force holding it together Type of matter present Spiral Pinwheel Gravitational Stars, gas, and dust Elliptical Round or oval Electrical Stars, gas, and dust Irregular Undefined Gravitational Stars, gas, and dust The information about galaxies is correct only in Column 1 and Column 3 Column 2 Column 1 Column 2 and Column 3 Question 25 (Multiple Choice Worth 2 points) [OU.03]One astronomer has observed an apparent lengthening of the electromagnetic waves given off by a star. Which of these conclusions is correct about the star? Its parallax is increasing. It is moving towards Earth. It is moving away from Earth. Its wavelength is decreasing. Question 26 (Essay Worth 3 points) [OU.02] In your own words, explain why the period between 1980 and 1989 is important in the history of space exploration. What are two technological advancements or discoveries from this period? Question 27 (Essay Worth 3 points) [OU.04]In your own words, explain how the Doppler Effect led to the development of the Big Bang Theory. Question 28 (Essay Worth 3 points) [OU.01H]In your own words, explain why the direction along which the electromagnetic wave travels is not the same as the direction along which the changing electric field is applied. Question 29 (Essay Worth 3 points) [OU.03H]The graphs below show the intensities of blue and yellow stars having different wavelengths. Two star curves shown. Blue Star peaks at a wavelength of 3500A and the Yellow Star peaks at a wavelength of 6000A. In your own words, explain why the graphs showing the intensities and wavelengths of blue stars and yellow stars are different.

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