waves

Question 1

does the Electromagnetic spectrum need a medium to travel?

Answer 1

yes

Question 2

what is Electromagnetic spectrum composed of

Answer 2

It is composed of all the electromagnetic waves

Question 3

how are electromagnetic waves classified

Answer 3

They are classified according to their wavelength and frequency

Question 4

what do waves carry

Answer 4

They carry energy but waves with shorter wavelengths can carry more energy

Question 5

Radio waves

Answer 5

lowest frequency and the greatest length. There used in combination with a magnetic field in order to produce detailed 3D pictures of organs (MRI).

Question 6

Microwaves

Answer 6

it is used to create heating in order to dry out human tissue mostly heart and cancer cells

Question 7

Infrared Rays

Answer 7

they cannot be seen by the human eyes but can be felt as heat. Infrared radiation is used for thermal imaging in the medical field and for warming premature babies.

Question 8

Visible light

Answer 8

made up of all wavelengths between 400 and 700 nanometers. All the colours that make up light can be found in that wavelength range. Photodynamic therapy (PDT) is an option to replace surgery to remove cancer cells.

Question 9

Ultraviolet rays

Answer 9

they have a higher frequency than the colour purple and are emitted by the sun. the medical field uses this to sterilize rooms, equipment and medical instruments. It’s also a medical treatment such as the treatment of certain skin conditions.

Question 10

X-rays

Answer 10

short wavelength and very high frequency. Carry lots of energy and can go through muscle and skin but are absorbed by the bones. They can be used for medical imaging (x-rays).

Question 11

Gamma rays

Answer 11

shortest waves but transmits the most energy. They can kill living cells. Using gamma rays you can kill cancerous cells.

Question 12

what is a wave defined as

Answer 12

A wave is defined as a deformation that spreads through a vacuum or through a matter. The wave carries energy from one point to another, without transporting matter.

Question 13

Tight wiggly line =

Answer 13

up in frequency, down in wavelength

Question 14

Long wiggly line =

Answer 14

down in frequency, up in wavelength

Question 15

Wavelength

Answer 15

It represents the distance between 2 crests or 2 troughs, or one complete cycle. Since it is the distance, it is measured using the metric system.

Question 16

Frequency

Answer 16

It is the number of wavelengths per second and is measured in hertz (Hz)

Question 17

Amplitude

Answer 17

It is the maximum height reached by a wave from its equilibrium point (x-axis).