Explain how solar wind interacts with Earth's magnetic field to create auroras at the poles. Make sure to include each part of the magnetic field the solar particles interact with
What will be an ideal response?
Earth's magnetic field dominates space around Earth by deflecting the solar wind and trapping high-energy particles in radiation belts. Solar wind particles are first deflected by the bow shock of Earth's magnetic field. High-energy particles from the solar wind leak into the magnetosphere and become trapped within Earth's magnetic field to produce the Van Allen belts of radiation The magnetic field lines enter Earth's atmosphere around the north and south magnetic poles. Powerful currents flow down along the magnetic field lines near the poles and excite gas atoms to emit photons, creating auroras. Colors are produced as different atoms are excited.
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A true statement about the modern theory of light is that
A. light waves do not carry energy but photons can. B. light can behave like a wave or a particle depending on the situation. C. light can only behave like a particle in atoms. D. photons do not have a frequency.
If an object's velocity is constant, its speed must also be constant
Indicate whether the statement is true or false
You are standing on Earth's equator. Which way is Polaris, the North star?
A) 30 degrees up, due West B) on the northern horizon C) directly overhead D) The answer depends on whether it's winter or summer. E) The answer depends on what time of day (or night) it is.
A compound microscope is made with an objective lens (
= 0.90 cm) and an eyepiece (
= 1.1 cm). The lenses are separated by a distance of 10 cm. If an object is 1.0 cm in front of the objective lens, where will the final image of the eyepiece be located?
A. ?30 B. ?15 C. ?23 D. ?11 E. ?9