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Powerpoint Jeopardy Rocks2 Planets2 Weather Weathering Atmosphere 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50 Which stage of the rock cycle occur closest to the center of the earth? Metamorphic Rock How are granite and obsidian similar? They are similar in composition An igneous rock characterized by two distinctly different textures is… Porphyry Which layer of the Earth likely contains the highest percentage of igneous rock? The crust In the rock cycle, rocks are classified by… Origin Meteor showers occur when Earth… Passes through comet debris A rock fragment traveling in space is called… Meteoroid Two planets that are know to radiate more energy back into space than they receive from the sun are…. Jupiter and Saturn Neptune was discovered after astronomers…. Predicted it position mathematically One reason why Mercury has more impact craters than Earth is because…. Mercury has no atmosphere What is a front? A boundary between two air masses How long does it take for a fully developed mid-latitude low to form? About 4 days In the Northern Hemisphere winds blow… Counterclockwise around low-pressure areas Why do thunderstorms often occur in the afternoons? Surface warming throughout the day causes unstable conditions in the troposphere Why do hurricanes weaken over land? They no longer have a source of humid air to provide heat from condensation Basalt is a common rock of surface lava flows. Which weathering process would not be expected to occur in basalt? Exfoliation What is not an agent of erosion? talus Best way to describe mudflow… Water carrying clay and silt move rapidly downhill What natural process probably cause the fencepost to lean downhill? Creep What is an example of mechanical weathering? The cracking of concrete sidewalk. Scientists hypothesized that Earth’s early atmosphere was formed primarily by gases released by…. Comet impacts. What process warms your feet if you stand barefoot on a sunwarmed sidewalk? conduction On a sunny summer day, the rays of the sun are strongest at…. 12 noon In which of earth’s atmosphere does almost all of Earth’s weather occur? Troposhpere The composition of Earth’s atmosphere has remained fairly stable recently because Earth… Has an efficient recycling system.