Briefly discuss the various motions of Earth. What motion is often mistakenly credited for causing seasons here on Earth? How are these motions related (if at all) to the modern calendar that we use today?
What will be an ideal response?
The two primary motions of Earth are rotation (the turning of earth on its axis) and revolution (the motion of Earth along a path around the Sun). The Earth's distance from the Sun, which is caused by revolution, is mistakenly thought to be the cause of seasons. In fact, the tilt of the Earth on its access is the cause of seasons. When the Southern Hemisphere is tilted towards the Sun and the Northern Hemisphere is tilted away from the Sun, the Southern Hemisphere experiences summer while the Northern Hemisphere experiences winter. The same applies for the opposite scenarios. These processes contribute to creating seasons and our modern calendar.
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Indicate whether the statement is true or false
Which of the following is not cited as a factor in helping to reduce air pollution?
A) use of more alternative, clean energy sources such as wind and solar B) increased vehicle fuel-efficiency C) uses of alternative and public transportation D) stricter air emission regulations E) increased use of coal as an energy source
All of the following is true regarding Doppler radar EXCEPT
A. complete coverage in large urban areas with skyscrapers. B. false echoes can occur from moving objects like birds. C. mountains can shield areas from coverage. D. false echoes can occur from stationary objects like skyscrapers.
Sedimentary rocks comprise approximately ________ percent of Earth's outermost 10 miles
A) 30 B) 15 C) 5 D) 50