Radiation

What is non-ionizing radiation?

• anything that strips away electrons from atoms

• radio & x-rays

• visible light

• anything that can potentially harm living cells

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How can light (radiation) best be described?

• by using wavelengths only

• as having different frequencies

• something that can be measured

• as having properties of both a wave and a particle

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___ is the distance between crest to crest or the time it takes for one complete cycle to pass.

• Frequency

• Wavelength

• Wien's Law

• Stefan's Law

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Which statement best describes frequency?

• number of photons that cross Earth's orbit per second

• number of crests in a wave that pass a point in one second

• the amount of time a wave takes to travel 1 km

• the amount of wavelengths per minute

Tags

NGSS.HS-PS4-1

What is visible light composed of?

• ROYGBIV

• all of the colors of the rainbow

• purely white light

• waves and frequencies

Tags

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Our eyes are able to see the color of an object due to visible light wavelengths

• being split into ROYGBIV.

• scattering off in all directions.

• being absorbed except for the color (wavelength) we see.

• stretching and compressing.

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Visible light ranges from about 400 nanometers - or ___ in color - to around 700 nanometers or

• red, blue

• blue, red

• indigo, green

• orange, violet

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Radio, micro, infrared (IR), visible light, ultraviolet (UV), X-rays & gamma rays all make up

• a specific type of modulated sound.

• the electromagnetic (EM) spectrum.

• the stars.

• the universe as we know it.

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Radio waves have the ___ wavelengths and ___ frequencies.

• longest, lowest

• shortest, highest

• longest, highest

• highest, shorter

Tags

NGSS.HS-PS4-1

Gamma rays have the ___ wavelengths and the ___ frequencies.

• longest, highest

• shortest, highest

• longest, lowest

• shortest, lowest

Tags

NGSS.HS-PS4-1