1 Select the correct answer.

to entertain readers with a legend about auroras
Ов.
to inform readers about auroras near polar regions
Octo instruct readers on how to watch auroras
OD.
to persuade readers to watch auroras near polar regions
Have you ever wondered how the lights that
illuminate the night sky with dazzling colors in
places like Alaska, Canada, or countries from the
extreme polar regions are formed?
Even though the sun is at a distance of 93
million miles from Earth, its effects are very
powerful. The sun discharges charged particles
in space during solar storms, and if Earth
happens to come in contact with one such
stream of charged particles, its magnetic field
reacts at the point of contact.
When the sun's charged particles enter Earth's
atmosphere, it causes the atoms in the
atmosphere to get "excited," which causes them
to light up. The colors are formed due to the
different types of gases in Earth's atmosphere
that come in contact with the charged particles.
Oxygen atoms emit green colors, while nitrogen
atoms may react and emit blue or red colors.
This results in a display of light that usually
appears as flowing curtains in the night sky, but
they sometimes also form arcs and spirals. The
lights that occur near the North Pole are called
aurora borealis, or northern lights, while the
lights that occur near the South Pole are called
aurora australis, southern lights
Reset
Next
2021 Edmentum. All rights reserved.