uv-, ir-radiation

• Natuurkunde
• Middelbare school
• havo
• Leerjaar 2

Uv, IR radiation

Lessonup

- Yes

Bags in

the cuboard

Phones in the phone holder

Lessongoals:

• Name and explain the different kinds of electromagnetic radiation.
  
• Name and explain the different applications of electromagnetic radiation.  
  

The electromagnetic spectrum

There is also solar radiation which you can not see, but you can detect it in other ways.

Uv radiation

• Drinking water supply companies use UV radiation to kill bacteria in the water. 
• Bees can see UV radiation.
• A large portion of the UV 

        radiation is blocked by the 

       ozone layer, clouds and 

       dust particles

Which type of radiation is used by bees to better see the stammens of flowers?

1. IR
2. UV
3. Gamma
4. x-ray

Next to which colour do we find UV radiation?

1. Red
2. Violet
3. Radio
4. IR

Which of the following is a use of UV radiation?

1. night vision weapons
2. Remote control of a television
3. Photo's to observe broken bones
4. Killing bacteria

Infrared radiation

Also called thermal radiation.

Examples: 

• A coal fire, 
  
• Sunlight, 
  
• Remote controll of a TV, 
  
• Rattlesnakes have grooves in their heads that are sensititve    to infrared radiation. They use it to spot prey at night.

What type of radiation does a rattlesnake use to spot it's prey at night?

1. UV
2. Gamma
3. IR
4. Micro

Why is there more UV radiation high in the mountains?

1. It is closer to the sun
2. There is less atmosphere
3. There is a higher oxygen level
4. Mountains reflect UV radiation

Do the following questions:

6.4: 1t/m6

In your writingbook

Rules: 

- time 7 minutes

- No talking