How can Mars, a planet with so little atmosphere, have so much wind?
What will be an ideal response?
The major component of Mars' atmosphere, carbon dioxide, freezes out as dry ice every winter, forming a huge but very thin polar cap. But in the opposite hemisphere, that cap is subliming back into the atmosphere, creating a high pressure area above it. With the changing seasons, the atmosphere "flip-flops" from pole to pole, with great barometric pressure changes and hurricane force winds and dust storms observable from Earth.
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Which of the following statements is true of coronal holes?
A) Open magnetic fields allow ionized gas to flow away as the solar wind. B) Reconnection events prevent the release of ionized gases outward from the corona. C) Discharge of solar materials is prevented because the region is extremely thick. D) Magnetic field loops back into the Sun to trap the solar wind.
Matter Waves: A proton and an electron are both accelerated to the same final kinetic energy. If ?p is the de Broglie wavelength of the proton and ?e is the de Broglie wavelength of the electron, then
A. ?p > ?e. B. ?p = ?e. C. ?p < ?e.
Neutrons:
A) have double the mass of protons. B) are atomic particles with no charge. C) when equal in number form isotopes. D) exist independently and unattached to atoms.
Which Terrestrial planet has the combination of most rapid rotation, liquid interior, and strongest magnetic field?
a. Venus b. Mercury c. Earth d. Mars