Question 2.

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Presentation transcript:

Question 2

Question 26 A light-year is a unit of distance. It is the distance that light travels in 1 year. For example, the distance from the North Star to Earth is about 434 light-years because it takes light about 434 to travel from the North Star to Earth. The table lists five starts in the constellation Cassiopeia and their approximate distances, in light-years, from Earth. Light travels at a speed of 3 x 108 meters per second. Highlight each star in the table that is between 7 x 1017 meters and 3 x 1018 meters from Earth. Click the name of a star to highlight it.

Distance From Earth in Light Years 1 light year = 9.461 x 1015 Star Distance From Earth in Light Years Schedar 228.56 Caph 54.46 Tsih 613.08 Ruchbah 99.41 Segin 441.95 9.461 x 1015 x 228.56 2.16 x 1018 9.461 x 1015 x 54.46 5.15 x 1017 9.461 x 1015 x 613.08 5.80 x 1018 9.461 x 1015 x 99.41 9.40 x 1017 9.461 x 1015 x 441.95 4.18 x 1018