It is ionising radiation that is around us all the time
1 of 19
Name three sources of background radiation
X-rays, rocks and soil from gamma rays and cosmic rays from space
2 of 19
What percentage of background radiation comes from natural sources
19%
3 of 19
what is the three types of ionising radiation
alpha, beta and gamma
4 of 19
give the penetrating properties of the 3 types of radioactive radiation
beta - is stopped by paper and is the least penatrating Gamma - stopped by lead and concrete most penetrating Beta -stopped by aluminium and plastic like perplex
5 of 19
what does the atomic number tell us
how Manny protons there is
6 of 19
what does the realative atomic mass tell us
the total of protons and neutrons
7 of 19
what is the charge of a proton, neutron and electron
proton - positive electron - negative neutron - no charge neutral
8 of 19
what are electrons aranged around
the nucleus on shells
9 of 19
what are the number of protons equal to
the number of electrons
10 of 19
what is at the centre of an atom
protons and neutrons
11 of 19
what is the centre of the atom called
nucleus
12 of 19
what are isotopes
atoms of the same element with different numbers of neutrons therefore a different atomic mass
13 of 19
what is alpha radiation made of
helium nuclei - positive
14 of 19
what is beta radiation made of
electrons - negative
15 of 19
what are gamma rays made of
electro magnetic waves
16 of 19
what is a radioisotope
an atom with an unstable nucleus
17 of 19
a alpha particle has ......
two protons and two neutrons
18 of 19
a beta particle is
an electron emitted from the nucleus of an atom
19 of 19
Other cards in this set
Card 2
Front
Name three sources of background radiation
Back
X-rays, rocks and soil from gamma rays and cosmic rays from space
Card 3
Front
What percentage of background radiation comes from natural sources
Back
Card 4
Front
what is the three types of ionising radiation
Back
Card 5
Front
give the penetrating properties of the 3 types of radioactive radiation
Comments
No comments have yet been made