Paper 2 corrections

Question 1

extreme accuracy for measuring time

Answer 1

data logger

Question 2

What is line graph used for ?

Answer 2

to continous data /variables

Question 3

J to MJ

Answer 3

divide by 1000000

Question 4

constrcuction of electromagnet

Question 5

Describe the evolution of the Universe from the Big Bang until the present day

Answer 5

Universe began as hot / dense point;
Universe has expanded since the Big Bang;
Universe has cooled since the Big Bang;

Question 6

Evidence that supports the Big Bang

Answer 6

. presence of cosmic microwave background
radiation;
allow CMBR
MP2. CMBR comes from all directions; allow CMBR is uniform
MP3. CMBR (began as gamma radiation and)
wavelength increased (as Universe expanded);
MP4. red-shift of galaxies;
MP5. further/faster galaxies show a greater redshift;
MP6. red-shift indicates that galaxies are moving
away from each other;
MP7. relative abundance of helium; allow large amount of helium
MP8. helium formed when Universe was hot enough
to fuse proton