Physics 6.2.1 Flashcards

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1
Q

What are ‘Electromagnetic Waves’?

A

Transverse Waves that Transfer Energy from the Source of the Waves to an Absorber.

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2
Q

All Electromagnetic Waves share the following Properties: (3)

A

-They are all Transverse.

-They can all Travel through a Vacuum.

-They all Travel at the Same Speed in a Vacuum.

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3
Q

The Electromagnetic Spectrum: (7)

A

-Radio Waves.

-Microwaves.

-Infrared.

-Visible Light.

-Ultra Violet.

-X-Rays.

-Gamma Rays.

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4
Q

The Higher the Frequency, the ___ the Energy of the Radiation.

A

Higher.

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5
Q

Radiation with Higher Energy is: (2)

A

-Highly Ionising.

-Harmful to Cells & Tissues, Causing Cancer.

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6
Q

Radiation with Lower Energy is: (2)

A

-Useful for Communication.

-Less harmful to Humans.

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7
Q

Which Colour has the Longest Wavelength, & Lowest Frequency & Energy?

A

Red.

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8
Q

Which Colour has the Shortest Wavelength, & Highest Frequency & Energy?

A

Violet.

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