Physics 6.2.1

Question 1

What are ‘Electromagnetic Waves’?

Answer 1

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

Question 2

All Electromagnetic Waves share the following Properties: (3)

Answer 2

-They are all Transverse.

-They can all Travel through a Vacuum.

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

Question 3

The Electromagnetic Spectrum: (7)

Answer 3

-Radio Waves.

-Microwaves.

-Infrared.

-Visible Light.

-Ultra Violet.

-X-Rays.

-Gamma Rays.

Question 4

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

Answer 4

Higher.

Question 5

Radiation with Higher Energy is: (2)

Answer 5

-Highly Ionising.

-Harmful to Cells & Tissues, Causing Cancer.

Question 6

Radiation with Lower Energy is: (2)

Answer 6

-Useful for Communication.

-Less harmful to Humans.

Question 7

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

Answer 7

Red.

Question 8

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

Answer 8

Violet.