The figure below shows features of a diffusion cloud chamber used for detecting radiations from a radioactive source.
![Physcf4et1p2q15b](https://www.easyelimu.com/images/form_4_past_papers/Form4_EndTerm1_2021/Physc_Paper_1_2_3/Physcf4et1p2q15b.JPG)
- Explain how the chamber works when a radioactive particle is introduced at the source.
- What is the purpose of solid carbon (IV) oxide.
- State one advantage of the cloud chamber over a G.M tube as a detector of radioactive radiations.