Year 10: Radiation Flashcards
1
Q
Give the names of the three types of nuclear radiation
A
Alpha
Beta
Gamma Ray
2
Q
What happens to the rate of radioactive decay when the temperature doubles?
A
Nothing. It stays the same
3
Q
Why did most of the Alpha particles pass straight through the foil in Rutherford’s experiment?
A
Most of the atom was empty space
4
Q
Where is most of the mass of an atom concentrated?
A
In the nucleus
5
Q
What is the relative charge of an alpha particle?
A
+2
6
Q
What is the relative mass of a beta particle?
A
-1
7
Q
Which type of nuclear radiation is the least penetrating?
A
Alpha particles
8
Q
Which type of nuclear radiation is the least ionising?
A
Gamma Rays
9
Q
What is meant by half-life?
A
The average time taken for the number of nuclei of the isotope in a sample to halve
