Quiz 3.7 - Detecting radiation

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

This quiz has 6 questions. Click Submit at the end to mark it. No personal data is collected.

This image shows four ways to detect radiation. Going clockwise from top left: Cloud chamber, Geiger-Mueller tube, Photographic film and fluorescent screen

1. Which of these gives a simple number as an output? *

1 point

Cloud chamber

Fluorescent screen

Geiger-Mueller tube ("Geiger counter")

Photographic film

2. Which of these do you not need to continuously monitor, but is not so good at detecting individual particles? *

1 point

Cloud chamber

Fluorescent screen

Geiger-Mueller tube ("Geiger counter")

Photographic film

3. Which of these is best for showing the paths individual particles take? *

1 point

Cloud chamber

Fluorescent screen

Geiger-Mueller tube ("Geiger counter")

Photographic film

4. Which of these requires you to sit in a darkened room, and then wait for your eyes to adapt to the dark? *

1 point

Cloud chamber

Fluorescent screen

Geiger-Mueller tube ("Geiger counter")

Photographic film

5. Why is it better to turn a G-M tube on its side to detect gamma? (Choose three) *

1 point

Gamma doesn't easily ionise the low-pressure gas inside the G-M tube

To protect the mica screen at the end of the tube from being damaged by the gamma

There is a bigger cross-sectional area presented to the gamma, so more hits the detector

To reflect back some of the gamma towards the source

The gamma will easily pass through the metal walls of the detector, so there is no need to go through the front of the tube

Required

6. Why would it be difficult to have a G-M tube built into your mobile phone? *

1 point

Radiation will damage your phone

You need a high voltage to cause an avalanche of electrons and positive ions and trigger a count

It would make your phone radioactive

Submit

Clear form

Forms

This content is neither created nor endorsed by Google.