Electro Magnetic Spectrum Flashcards Preview

Gcse Physics > Electro Magnetic Spectrum > Flashcards

Flashcards in Electro Magnetic Spectrum Deck (31):
1

What is a source of a radio wave

The sun or a radio

2

What effects on the body are there from radio waves

None

3

One main use for radio waves

TV

4

What is a source of a microwave

Electronics (ipads, phones)

5

Efects on body of microwaves

Communications, mobile phones, signals required, satellite transmission

6

Sources of inferred radiations

Ovens

7

Effects on body of inferred radiation

Cause burns

8

One main use of inferred radiation

Cooking food

9

Sources of visible light

Sun

10

Effects of visible light on the body

Cause blindness

11

One main use of visible light

Visibility and photosynthesis

12

Sources of ultraviolet

Sun tan beds

13

Effects of ultraviolet on body

Damages cells, could cause cancer

14

One main use of ultraviolet

Fluorescent lights

15

Sources of x rays

Machine, sun

16

Effects of x rays on body

Penetrate the body, destroy cells

17

One main use of x rays

Air port luggage, security

18

Sources of gamma rays

Anything radioactive (sun)

19

Effects of gamma rays on body

Cell damage

20

One main use of gamma rays

Sterilising food

21

Radio waves effects on body

None

22

Micro waves Effects on the body

None

23

Infrared radiation effects on the body

Causes burns

24

Visible light effects on body

Could cause blindness

25

Ultraviolet rays effects on the body

Damages cells could cause cancer

26

X-rays effects on the body

Penetrate skin damages cells

27

Gamma rays effects on the body

Cell damage

28

How do X-rays work

This beam travels through the air, comes into contact with our body tissues, and produces an image on a metal film. Soft tissue, such as skin and organs, cannot absorb the high-energy rays, and the beam passes through them.

29

How to produce an X-ray image

x-rays are usually generated in vacuum tubes by bombarding a metal target with high-speed electrons and images produced by passing the resulting radiation through the patient's body on to a photographic plate or digital recorder to produce a radiograph

30

Advantages of an X-ray

X-rays are used to treat malign tumors before its spreads throughout the human body.
They help radiologists identify cracks, infections, injury, and abnormal bones.
They also help in identifying bone cancer.
X-rays help in locating alien objects inside the bones or around them.

31

disadvantages of an X-ray

x-rays makes our blood cells to have higher level of hydrogen peroxide which could cause cell damage.
a higher risk of getting cancer from X-rays.
The X-rays are able to change the base of the DNA causing a mutation.