GCSE OCR 21st Century Triple Science (CBP1-7) Thread

That exam was pretty bad! Over though! WOOOO :biggrin:

Reply 3001

Original post by olmyster911

I didn't understand the lens 4 marker either! I drew some random lines :biggrin:

I can't remember what I put for the last maths question but I divided 2 values I already had. What did you put for the other calculations in the paper?

Posted from TSR Mobile

(24+4)/10 = 2.8AU
Then I did the hubble one wrong, divided the wrong way

That was it wasn't it?

Reply 3002

First question - waaaat?! so I moved on and when it gave us the table with the other planets for a later question I realised the answer to the 1st one was that the planets hadn't been discovered yet xD

Reply 3003

Original post by Sulfur

(24+4)/10 = 2.8AU
Then I did the hubble one wrong, divided the wrong way

That was it wasn't it?

I got 2.77AU as well. And what was the Hubble one again?

Reply 3004

Original post by ToLiveInADream

I got 2.77AU as well. And what was the Hubble one again?

You got 2.77AU!?!? How lol, I thought it was that double and +4 and then divide by 10 pattern, and the previous was 12, double it is 24, +4 /10 is 28/10 = 2.8AU

Travels 1800 km/s
Speed is 71 km/s per Mpc
Distance: ? (1800/71) Final units: Mpc

Reply 3005

meessime

Original post by ToLiveInADream

Huh? What was the first question?

Reply 3006

Original post by Sulfur

Yup, lol! I did that but I was talking about the question where it asked whether this star fitted into the pattern or not. That was 2.77AU so I said it was relatively close to 2.8AU so fit the pattern :tongue:

Reply 3007

Original post by meessime

Huh? What was the first question?

Asking us to explain why there was only data for 6 planets, I think..

Reply 3008

meessime

Original post by ToLiveInADream

Asking us to explain why there was only data for 6 planets, I think..

Oh I did that wrong then, I wrote something like it's to make sure there's a pattern to prove that titius-bole law is right...: :s-smilie:

Reply 3009

Original post by ToLiveInADream

Ah yes! Good I put that :smile:

Original post by ToLiveInADream

Asking us to explain why there was only data for 6 planets, I think..

What was the answer? I said that people could only see them planets with the naked-eye, had no idea.

Reply 3010

What did people get for the sun and how long it'd take to run out of energy or something?

I did overall mass(given in question i think)/mass lost per second of the previous star question(it said they had similar luminosity)?

Reply 3011

Original post by Sulfur

Ah yes! Good I put that :smile:

What was the answer? I said that people could only see them planets with the naked-eye, had no idea.

I read over the question and it said something about 1504 so I figured they hadn't been discovered yet :smile:

It fit in with the next couple of questions where it gave data for Neptune, Uranus & Pluto because it said data was only collected at like 1804?

Reply 3012

Original post by Sulfur

What was the answer? I said that people could only see them planets with the naked-eye, had no idea.

That's what i put but i was just thinking how are they recording any of this data by naked eye then!

Reply 3013

Original post by lyricalvibe

I never did that.. :redface:

I worked out the energy with E=mc^2 with the mass they gave us. Then divided it with my answer from the previous question (mass lost,
methinks) because it said ''this much mass is lost in 1 second''.

It was such a weird question. I reckon grade boundaries will drop to 36 = A* tbh..

Reply 3014

DDan123

Phew I thought I did badly in this exam until I read what everyone else put down for some of the dodgy questions :tongue:

Overall it wasn't a bad paper, would have preferred more calculations but the 6 markers were nice.
Woop end of exams!!

Posted from TSR Mobile

Reply 3015

Original post by ToLiveInADream

I never did that.. :redface:

Yh, i know, completely out of spec -_- but i spent my last 5mins answering it :/ my school odly found it easy but most people want C or B so I'm thinking it'll go up for the C grade and down for the A*, 35-37 i think so basically what yousaid :smile:

What did you put for the lenses and refraction?

Reply 3016

Original post by ToLiveInADream

I read over the question and it said something about 1504 so I figured they hadn't been discovered yet :smile:

It fit in with the next couple of questions where it gave data for Neptune, Uranus & Pluto because it said data was only collected at like 1804?

Original post by lyricalvibe

That's what i put but i was just thinking how are they recording any of this data by naked eye then!

Hmm yup I see both points. I've just looked it up and they were discovered a bit later (1700-1800s) but surely the fact that they can't be seen by the naked eye also works, hence they couldn't be discovered until Galileo? This is why I hate OCR... if they allowed multiple answers then I'd be happy.

Reply 3017

I've got 2 hours of statistics nowv :frown:

then I'm done with exams though :biggrin:

Reply 3018