Presentation on theme: "How many centimeters are there in one kilometer?"— Presentation transcript:
1How many centimeters are there in one kilometer? QUESTIONHow many centimeters are there in one kilometer?1001,00010,000100,0001×106
2Scientific notation is used in science because QUESTIONScientific notation is used in science becauseit makes it easy to write big or small numbers.all astronomical distances are expressed in metric units.it makes conversions between units easy.all of the above.
3The average distance from Earth to the Sun is QUESTIONThe average distance from Earth to the Sun is1 ly1 million km1 million miles1 billion km150 million km
4a star which generates its own energy. 1 AU from Earth. QUESTIONThe sun isa star which generates its own energy.1 AU from Earth.visible by its own light emission.all of the above.
52.9 × 107 is the same as 2.9 thousand 29 thousand 290 thousand QUESTION2.9 × 107 is the same as2.9 thousand29 thousand290 thousand2.9 million29 million
6QUESTIONArrange the following distances in order from smallest to largest. I. kilometer II. light-year III. yard IV. Astronomical unitI, II, III, IVIV, III, II, IIII, I, IV, IIII, I, IV, IIIIII, I, II, IV
7QUESTIONIf light takes 8 minutes to travel from the sun to Earth and over 4 hours to travel from the sun to the planet Neptune, what is the distance from the sun to Neptune?5 AU30 AU30 ly5 ly0.6 ly
8In the diagram below, what is the diameter of Jupiter? QUESTIONIn the diagram below, what is the diameter of Jupiter?About 7.0 × 104 km.About 7.0 × 105 km.About 1.4 × 104 km.About 1.4 × 105 km.About 3.5 × 106 km.
9QUESTIONThe speed of light is 3.0 × 105 km/sec, and it takes light 1.3 sec for light to travel from the moon to Earth. From this information, what is the distance to the moon?390,000 km230,000 km3.9 km2.3 km4.3 × 105 km
10A typical galaxy like our Milky Way galaxy contains QUESTIONA typical galaxy like our Milky Way galaxy containsprimarily planets.gas only.stars (some with planets), gas and dust.a single star and planets.thousands of superclusters.
11contains about 100 billion stars. QUESTIONThe Milky Way Galaxycontains about 100 billion stars.is about 200 light-years in diameter.is the largest known object in the universe.all of the above.1 and 3.
12part of a cluster of galaxies that contains a few dozen galaxies. QUESTIONThe Milky Way Galaxy isa spiral galaxy.part of a cluster of galaxies that contains a few dozen galaxies.about 80,000 light years in diameter.all of the above.
13QUESTIONIf the Earth were represented as a basketball (~10 in) and the Moon as a baseball (~3 in) then, to order of magnitude, what size would best represent the diameter of the Sun?10 ft100 ft1000 ft10000 ft
14Which sequence is correct when ordered by increasing size? QUESTIONWhich sequence is correct when ordered by increasing size?Earth, Solar System, Milky Way Galaxy, clusters of galaxiesSolar System, Earth, galaxy clusters, Milky Way GalaxyEarth, Milky Way Galaxy, Solar System, galaxy clustersGalaxy clusters, Solar System, Milky Way Galaxy, Earth
15How is a planet different from a star? QUESTIONHow is a planet different from a star?Planets are larger than stars.Planets reflect light while stars produce their own light.Stars move faster in the sky than planets.Planets are brighter than stars.
16QUESTIONIf the distance from the Sun to the Earth is represented by roughly 15 meters, then the distance from the Earth to the Moon on the same scale would beabout 30 meters.about 10 meters.about 1 meter.small than your hand.
17About the distance between New York and Boston (330 km). QUESTIONAssume the size of the Sun is represented by a softball with the Earth about 15 meters (150 million km or 8 light minutes) away. Roughly how far away, to scale, would the nearest stars to the Sun be?About the distance between New York and Boston (330 km).100 meters away.About the distance across the United States from New York to Los Angeles (4300 km).About the distance across 50 football fields (50 x 100 m).
18If the distance to the nearest star is 4.2 light-years, then QUESTIONIf the distance to the nearest star is 4.2 light-years, thenthe star is 4.2 million AU away.the light we see left the star 4.2 years ago.the star must have formed 4.2 billion years ago.the star must be very young.the star must be very old.
19QUESTIONAssume a 100 yard football field represents the 14 billion year history of the universe with one end as the origin and the other end representing the present. The existence of human beings will extend from _____ to the present “goal line.”the 50 yard linethe 5 yard linethe one yard linethe one inch line
20Which of these is NOT a common misconception? QUESTIONWhich of these is NOT a common misconception?A light year is a unit of time.Stars look like disks when seen through a telescope.A galaxy is a star plus its planets.All of the above are misconceptions.
21The average distance from Earth to the Sun is 1 AU. QUESTIONThe average distance from Earth to the Sun is 1 AU.TrueFalse
22A light-year is the distance light travels in one year. QUESTIONA light-year is the distance light travels in one year.TrueFalse
23A kilometer contains 1 million meters. QUESTIONA kilometer contains 1 million meters.TrueFalse
24The Sun is a star in the Milky Way Galaxy. QUESTIONThe Sun is a star in the Milky Way Galaxy.TrueFalse
25The metric system is a decimal system. QUESTIONThe metric system is a decimal system.TrueFalse
26QUESTION3.42 × 107 km is the same as 3.42 × 104 m.TrueFalse
27The numbers 9.81 × 105 and 981,000 are equivalent. QUESTIONThe numbers 9.81 × 105 and 981,000 are equivalent.TrueFalse
28A supercluster refers to a large group of stars within the Milky Way. QUESTIONA supercluster refers to a large group of stars within the Milky Way.TrueFalse