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Ask-a-Scientist: Extraordinary Earth - Windows to the Universe

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Extraordinary Earth

This page contains answers to questions that have to do with the Earth. They explore geology, the environment, our weather and much more! Click on a topic to see our "Quickie" questions archive or scroll down for more in-depth answers.

Quickie Extraordinary Earth

Movement of the Earth (82 questions)
Gravity/Magnetism (15 questions)
Interior/Surface (46 questions)
Atmosphere/Weather (41 questions)
Oceans/Water (11 questions)
Sun/Moon Effects (23 questions)
Other (488 questions)

In-depth questions and answers

1)Why is the sky blue?
2)What is the velocity of the Earth?
3)How many man-made satellites are currently orbiting the Earth?
4)If natural resouces (natural gas, oil, and coal) are formed by extreme pressure acting on material made mainly of carbon, why don't we send large amounts of useless carbon based things to Venus where there is very extreme surface pressure?
5)What is the period of the Earth? the Moon? How long does it take for Mars to rotate on its axis?
6)Why is the ocean blue?
7)How does the phenomena of "seasons" occur. Why would it be summer in Maryland when it is winter in the southern hemisphere? Does the Moon have seasons?
8)Are there any places that you can become weightless other than space?
9)If the Earth is round like a ball, why aren't we standing at odd angles around it?
10)What is the white we see coming off an airplane in the sky?
11)What is the climate like in the desert? What kinds of life can you find there? How do they handle the conditions in the desert?
12)Does wind have an effect on radio waves?
13)What are isotherms and isobars?
14)Is a meteor going to crash into Earth in 2028? What can we do?!?
15)Why is the Moon moving away from the Earth? Will it just keep on going?
16)How are temperature and humidity related?
17)What is gravity and how does it work?
18) Why does the temperature in our atmosphere vary?
19)Earth's perihelion, aphelion, circumference, rotational and orbital speed...and more?
20)How far is the Earth from the Sun, the Moon and all the other planets? How far are all of the planets from the Sun? Do you know of a software that tracks the planets in real-time?
21)Were the Moon landings faked? What about the flag "waving in the breeze"? Who took the astronauts' picture if noone else was on the Moon at the time?

Last modified August 1, 2001 by Jennifer Bergman.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA