AS101 All Quizzes And Assigments Astronomy I Our Place In The Cosmos

AS101 All Quizzes And Assigments Astronomy I Our Place In The CosmosIt takes light 1.3 seconds to travel from the Moon to Earth and 8 minutes for light to travel from the Sun to Earth. Which of the following statements is true? - The Sun is 370 times farther from Earth than the Moon Today the age of the universe is estimated in 13,700,000,000 years - 1.37x109 y What do we mean by the observable universe? - The part of the universe that could be observed in principle, including things that may require future technologies The speed of light is 3.5x105 km/s, and it takes 1.3 seconds for light to travel from the Moon to Earth. Based on this information, what is the distance from the Earth to the Moon? - 390,000 km In the diagram, what is the diameter of Jupiter - About 1.4x105 km What is the implication if the distance to the nearest star is 4.2 light years? - The light we see left the star 4.2 years ago How long does it take for light to travel from the sun to neptune? - Several hours Suppose we look at a photograph of many galaxies Assuming that all galaxies formed at about the same time, which galaxy in the picture is the youngest? - The one that is farthest away Which of the following is largest? - Size of a typical galaxy How is a planet different from a star? - Planets reflect light, while stars produce their own light Which statement best describes the Milky Way Galaxy? - It is a spiral galaxy Which of the following sequenced objects is in the correct order of increasing distance? - Moon, Venus, Saturn, Polaris, Andromeda galaxy Roughly how many stars are in the Milky Way Galaxy? - 100 billion