Radiation

Question 1

In physics, radiation means:

Answer 1

The electro-magnetic waves in space

Question 2

The unit of frequency is:

Answer 2

Hertz

Question 3

In physics, frequency means

Answer 3

The number of times per second an electro-magnetic-wave can change direction

Question 4

The unit of frequency is:

Answer 4

Hertz

Question 5

Hertz is a unit of:

Answer 5

Frequency

Question 6

In the visible spectrum the colors in the correct order are

Answer 6

Red, orange, yellow and green

Question 7

In the visible spectrum the colors in the correct order are:

Answer 7

Green, blue, indigo and violet

Question 8

Invisible rays which can be used in beauty therapy are:

Answer 8

Infra-red and ultra-violet rays

Question 9

Infra-red radiation

Answer 9

Is invisible and can be felt

Question 10

Infra-red radiation is absorbed:

Answer 10

In the dermis and muscles

Question 11

Infra-red rays can be used in beauty therapy for:

Answer 11

Warming

Question 12

The effect of infra-red rays on the skin is to:

Answer 12

Warm the deeper layers of the skin

Question 13

An indication for a treatment with infra-red rays is:

Answer 13

A poor blood circulation in the skin

Question 14

A contra-indication to treatment with infra-red radiation is:

Answer 14

Skin showing teleangiectasias on the cheek area

Question 15

Infra-red radiation is used:

Answer 15

To warm the tissues before massage

Question 16

Ultra-violet radiation can be useful in beauty therapy because of the:

Answer 16

Chemical effect on the skin

Question 17

Which of the following radiation has the most anti-bacterial effect?

Answer 17

UV-C

Question 18

What is the safest radiation that can be used to increase pigmentation?

Answer 18

UV-A

Question 19

Which rays are mostly used in ray-treatments to increase pigmentation?

Answer 19

UV-A and UV-B

Question 20

Ultra-violet radiation is absorbed:

Answer 20

Mainly in the epidermis

Question 21

The radiation mainly responsible for tanning the skin is:

Answer 21

UV-A

Question 22

Skin cancer is moat likely caused by:

Answer 22

Ultra-violet