Raditation + Universe

Question 1

Alpha particle

Beta particle

Gamma ray

Answer 1

Alpha- deflected in magnetic and electric fields- helium nucleus

Beta- deflected in magnetic and electric fields. electron

Gamma-not deflected, e.m wave

Question 2

Examples of each beta, gamma, alpha

Answer 2

Beta, thickness control
Gamma- tracers like gamma camera- flash
Alpha- smoke detectors

Question 3

Structure of atom
Electron-
Proton
Neutron

Answer 3

Electron- nearly nothing
Proton- positive (1) same mass as neutron
Neutron- same mass as proton (1)

Question 4

Ionising power

Answer 4

Alpha-very

Gamma- weakly

Question 5

Electromagnetic (spectrum) Microwaves visible light X Ray’s gamma rays ultraviolet radio waves infrared

Answer 5

Order 
Radio waves
Micro waves
Infra red
Visible light
Ultra violet
X Ray's
Gamma rays

Question 6

Isotope

Answer 6

Isotope is an atom with different number of neutrons. (Each isotope has eight protons on the bottom number atomic) would not have oxygen otherwise

Question 7

Electromagnetic radiation

Waves_move_energy_

Answer 7

Waves move energy they can be reflected, transmitted or absorbed.
When absorbed it makes the substance hotter

May create an alternate current

Question 8

Wave speed

Answer 8

Wave speed = frequency in HZ X wavelength in m

(All electromagnetic waves travel at 300,000,000 m/s in vacuum

Question 9

Gamma rays + ultra viloet and X Ray’s

Answer 9

Gamma +X Ray mainly pass through soft tissue

Large doses can kill cells, small doses can cause cancer

Question 10

Infa red and visible light

Answer 10

Can send signals down optical fibres and so travel in curved paths

Question 11

Microwaves

Answer 11

Pass through earths atmosphere and used to send signals too and from satellites

Question 12

Big Bang theory

Answer 12

Further away a galaxy, is the bigger the redshift and therefore the faster the galaxy is moving away. Showing the universe is expanding
Like the absorption lines have all been shifted