3.1 Radiation and contamination

• Natuurkunde
• Middelbare school
• havo
• Leerjaar 3

Put the kinds of radiation in order from bigger to smaller

Micro-golve

Visible light

Infrared radiation

UV-radiation

Radio waves

Röntgen

Gamma

Radiation and contamination

Irradiation - Being exposed to radiation

Contamination – area which is affected by radiation.

In other words, the area or object has absorbed radiation

Different kinds of radiation

- Gamma

Small as a nucleus

Through the body

Damages bad and good cells

- Röntgen

Between gamma and UV

Used for watching bones en braintissue

Which radiation causes the most damage to our bodies?

What is backgroundradiation?

Radiation in numbers

Total amount of radiation: Radiation dose

This dose is in Sievert(Sv)

Very low dosages, backgroundradiation, are in milli of micro Sv

Sigarettes are full of radioactive waste

Exercises!

Do: 5.1: 1, 3, 6, 7, 8, 10, 13, 14, 19

Complete these exercises before the next lesson. Then we'll discuss them if you checked you answers beforehand.