4.4.3 Hazards and Uses of Radioactive Emissions and of Background Radiation (Physics only)

Question 1

What type of radiation can pass through paper?

Answer 1

Alpha

Question 2

What type of radiation can pass through paper to Aluminium?

Answer 2

Beta

Question 3

What type of radiation can pass through paper, Aluminium to Lead?

Answer 3

Gamma

Question 4

What is Half-Life?

Answer 4

Time it takes for the number of nuclei of the isotope in a sample to halve

Question 5

What is the strongest form of background radiation?

Answer 5

Rocks & Soil

Question 6

Which form of radiation has a short wavelength, high frequency and is electromagnetic?

Answer 6

Gamma

Question 7

What is a risk of radiation to living cells?

Answer 7

Ionises cell DNA and the cell could become cancerous.

Question 8

What is an advantage of having high doses of radiation?

Answer 8

Higher doses of radiation can kill cancer cells.

Question 9

If I measure the radiation of a rock and I wrapped the rock in Paper and Aluminium foil and this had no effect on the count rate, what does this tell you about the rock?

Answer 9

The rock emits Gamma radiation.