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Science > Sun > Flashcards

Sun Flashcards

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1
Q

the star at the center of the Solar System

A

Sun

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2
Q

What are the layers of the sun

A

core,
radiation zone, and convection zone.

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3
Q

What are the layers of the suns atmosphere

A

photosphere, the chromosphere,
and the corona.

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4
Q

What si the temperature of the suns surface

A

5600-6000 degrees c

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5
Q

What is the Temperature of the suns corana

A

Around 3 million degrees c

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6
Q

What process fuels the sun

A

Nuclear fission

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7
Q

the energy released during nuclear fission or fusion, especially when used to generate electricity.

A

Nuclear fission

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8
Q

How does the sun rotate

A

Magnetic fields and poles

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9
Q

How old is the sun

A

4.5 billion years old

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10
Q

How long until the sun burns out

A

5 billion years

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11
Q

How much of the solar system’s mass is the sun?

A

99.8 percent

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12
Q

Sometimes the
loops in sunspot regions suddenly connect, releasing large amounts of
energy. The energy heats gas on the sun to millions of degrees Celsius, causing the gas to explode into space.

A

Solar flare

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13
Q

a giant cloud of solar plasma drenched with magnetic field lines that are blown away from the Sun during strong, long-duration solar flares and filament eruptions.

A

Coronal mass ejection

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14
Q

areas of gas on the sun that are cooler than the
gas around them.

A

Sunspot

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15
Q

Reddish loops of gas which link sunspots regions

A

Prominences

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16
Q

Parts of nuclear decay

A

Alpha decay, beta decay, gamma decay

17
Q

How can Alpha particles penetrate

A

they may not penetrate deeply but they can do lots of damage to whatever they hit. Released inside the human body they can damage cells causing illness & disease.

18
Q

How can beta particles penetrate

A

they’re smaller & lighter so they penetrate deeper into material they hit.

19
Q

How can gamma rays penetrate

A

Have no mass & no charge.
●Travel at the speed of light.
●Emitted by nucleus when alpha or beta particle is created.
●Takes thick blocks of concrete or lead to stop gamma rays.

20
Q

What do alpha, beta,and gamma release

A

Alpha, beta, and gamma

21
Q

disturbances of matter. Energy traveling through a medium (solid, liquid, gas) or space.

A

Waves

22
Q

Two types of waves and examples

A

Transverse - water waves

Longitudal - sound waves

23
Q

Parts of a wavelength

A

Trough and crest

24
Q

Meters/second, the speed of a wave

A

wave speed

25
Q

The length of a wave, meter

A

Wavelength

26
Q

Formula for finding volume of a wave

A

V=lf

27
Q

Hertz

A

Frequency

28
Q

the absolute value of the maximum displacement from a zero value during one period of an oscillation.

A

Amplitude

29
Q

Lowest part of a wave

A

Trough

30
Q

Top part of a wave

A

Crest

31
Q

Frequencies of waves,EMS

A

Electromagnetic Spectrum

32
Q

low frequency EM waves
with wavelengths longer than 1mm.
■ These waves must be turned into sound
waves by a radio before you can hear them

A

Radio waves

33
Q

radio waves with wavelengths
less than 30 cm and higher frequency & shorter

A

Microwaves

34
Q

EM with wavelengths between 1mm & 750
billionths of a meter.
■ Used daily in remote controls, to read CD-
ROMs

A

Infrared waves

35
Q

Range of EM humans can see from 750
billionths to 00 billionths of a meter.

A

Visible light

36
Q

EM waves with wavelengths from about
400 billionths to 10 billionths of a meter.
■ Have enough energy to enter skin cells

A

Ultraviolet waves

37
Q

EM waves with
shortest wavelength &
highest frequency
■ High Energy- go
through skin & muscle
■ High level exposure
causes cancer

A

X-rays and gamma rays

38
Q

What is the speed of light

A

3 x 108 m/s

39
Q

How do you feel about this test

A

Así así

Science (8 decks)

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