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CHEM 1110 > Aurora Borealis > Flashcards

Aurora Borealis Flashcards

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1
Q

What kinds of lights are the Aurora Borealis?

A

northern and southern

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2
Q

What kinds of particles collide with neutral atoms from the atmosphere?

A

high energy particles

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3
Q

What depart from the suns corona?

A

protons and electrons

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4
Q

What is plasma?

A

tons of protons and electrons mixed together with no shape

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5
Q

What is solar wind

A

Stream of charged particles that flow from the suns corona into the solar system

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6
Q

How does the Earth prevent solar wind?

A

It sets up a megnetosphere

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7
Q

What is a magnetosphere?

A

The space surrounding Earth where Earth’s magnetic field is dominant

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8
Q

What do particles do when they interact?

A

emit photons

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9
Q

What does colour depend on?

A

photons wavelength

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10
Q

What is an aurora?

A

a light based phenomena

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11
Q

What is a coronal mass ejection?

A

energy from the sun

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12
Q

What elements does light interact with?

A

Nitrogen and oxygen

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13
Q

What do nitrogen and oxygen absorb?
What kind of reaction is this?

A

electrons
physical

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14
Q

What gives colours?

A

height and type of reaction

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15
Q

What is a theory?

A

laws, explains phenomena, predicts what will happen
not assumptions, hypotheses, or hunches

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15
Q

What does everything start with?

A

a wave

16
Q

What are the parts of a wave?

A

trough, crest, amplitude, wavelength, frequency

17
Q

What is amplitude?

A

how high a wave gets

18
Q

What is wavelength?

A

how far apart a wave gets
measured in distance (m)

19
Q

What is frequency?

A

how long it takes for each wavelength
measured in time (1/s or Hz)

20
Q

What kind of relationship does wavelength and frequency have?

A

inverse

21
Q

Higher frequency =

A

shorter wavelength

22
Q

Lower frequency =

A

longer wavelength

23
Q

List the electromagnetic spectrum

A

radio, micro, infrared, visible light, UV, x-ray, gamma

24
Q

What is electromagnetic radiation?

A

energy transferred by waves

25
Q

Does red have a lower frequency than purple?

A

yes

26
Q

Infrared

A

800 nm

27
Q

Red

A

700 nm

28
Q

Yellow

A

600 nm

29
Q

Green-blue

A

500 nm

30
Q

Violet

A

400 nm

31
Q

UV

A

300 nm

32
Q

Do all electromagnetic waves move at the speed of light?

A

yes

33
Q

What is the speed of light?

A

3.00 x 10^8 m/s

CHEM 1110 (18 decks)

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