Earth's orbit around the sun is slightly elliptical. thus, earth actually gets closer to the sun during part of the year. what happens to earth's orbital speed when it is closer to the sun?

The sun subtends a half a degree from were we stand. If the lower limb of the setting sun touches the horizon at 6:30 PM when does it disappear completely below the horizon (that is how how does it take to set.) ?

Which of these is an environmental consequence of the shrinking of the Aral Sea? the salt content of the water has increased more nesting birds have come to its beaches fish populations have increased to unhealthy levels the water have become less

Suppose you observed emission lines from gas 30 light-years from the center. how would you expect the doppler shifts of those lines to be different, assuming that the gas really is orbiting a supermassive black hole?

New York City is located at 40 degrees north latitude on earth. How much sunlight would you expect New York to see in June? In December?

Can the force of water accomplish work? yes no

Sedimentary rock is the most common material in the Earth's Crust. True False

According to this map, which nation is considered part of central Europe? Northern & Western Europe Central Europe Southern Eulope & the Balkans A. spain B. Ireland C. Italy D. Germany

How are ice and water involved in mechanical weathering

The Milky Way is a constellation containing our solar system A. true B. false

Sediments are carried from a hilltop to the ground at the bottom of the hill on a windy day. What is the agent of erosion? the hilltop the ground the sediments the wind