English, 16.08.2020 01:01 ellisc7044
Select the correct text in the passage.
Erin is writing a paper on the northern lights. In which sentence should she add a definition to help clarify her ideas?
The northern lights are colorful swirls of light that flicker in the nighttime sky in the upper part of the northern hemisphere. This natural
occurrence happens when fast-moving, electrically charged particles (electrons) from space collide with the oxygen and nitrogen gas in our
atmosphere. These electrons originate in the magnetosphere. As they rain into the atmosphere, the electrons give energy to oxygen and
nitrogen molecules, making them excited. When the molecules return to their normal state, they release small bursts of energy in the form of
light.
When billions of these collisions occur and enough photons are released, the oxygen and nitrogen in the atmosphere let out enough light for the
eye to detect it. This ghostly glow can light up the night sky in a dance of colors. But since the northern lights are much dimmer than sunlight,
they cannot be seen from the ground in the daytime.
The color of the northern lights depends on which gas is being excited by the electrons and on how much energy is being exchanged. These
molecules also let out ultraviolet light which can only be detected by special cameras on satellites.
Answers: 1
English, 22.06.2019 02:40, yclark98563p5z2gt
One of the author's purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with enormous speed mark this and return save and exit next submit
Answers: 3
English, 22.06.2019 06:30, surpremeblizzle
According to the article about rita doves poem what do hades and demeter have in common
Answers: 1
Select the correct text in the passage.
Erin is writing a paper on the northern lights. In which se...
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