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

Amyjonesx
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#1461
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#1461
(Original post by Sulfur)
Page 39.
Im really sorry to disturb you again but can i find the mark scheme anywhere?
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(Original post by Amyjonesx)
Im really sorry to disturb you again but can i find the mark scheme anywhere?
Have you checked Page 39?
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User1452521
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(Original post by Amyjonesx)
Im really sorry to disturb you again but can i find the mark scheme anywhere?
There's a small tutorial on YouTube explaining the hard questions that you've probably not done as well on


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Sulfur
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(Original post by Amyjonesx)
Im really sorry to disturb you again but can i find the mark scheme anywhere?
Sorry I can't find it anywhere, our teacher just marked it and gave us the marks back so we couldn't correct it. If you have the CGP book then you'll find most of the answers from that - these are the ones I got right:

1ai)
box 1 - box 2
box 2 - box 1
box 3 - box 4

1aii and 1b) already visible on paper

1c)
Source B (1)
Returns to background radiation quickly (1)
3 months means the decay will be at 4 per second (1)

1di)
Benefits outweigh the risks (1)
Therapy successful in most cases (1)
High chance of killing tumours (1)

1dii) An amount of radiation

2) CGP covers 6 marker

3a) Thermistor, LDR, Variable resistor
3b) Cannot tell, false, true, true, false

4a) 2400 x 0.005 = 12 (1) 12/1.5 = 8 (1)
4b) No idea

5) 11500 in Np (1) 180 in Ns (1)

6) Covered on this thread/CGP 6 marker

7ai) Increase shoe size = time taken increases (1) Bigger shoe size = more friction (1) (or something similar)

7aii) Other student's results fit between Ross's experiment shoe sizes 5 and 7 (1). Other student used a different ramp, may have more friction/different surface/different height to Ross (1) Not necessarily wrong, do more repeats as only one shoe size done (1) - I think

7bi) Friction (1), Weight (1)

7bii) No idea - starts moving downwards until a limit where the friction is equal to gravity?

7c) Time and length // height // weight and height // time, mass and length

7d) Increasing upwards (basically, time goes up as velocity does)

8) CGP covers this, basically GPE into KE etc
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User1452521
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I found it, sorry for bad quality:
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physicalgraffiti
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#1466
How would you calculate the total displacement on a displacement time graph?
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User1452521
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Sulfur
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#1469
(Original post by physicalgraffiti)
How would you calculate the total displacement on a displacement time graph?
The area under the graph (split it into triangles and squares/rectangles).
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ed__
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ahh ive messed up physics so bad and i haven't even done it yet. Let me put it this way I've done very rough revision on p4,p5,and p6 but have missed out all the induction transformer and motor stuff, two pages of p4 and am still doing p6 so i think ill be getting a low c on this exam. My coursework's 60 out of 64, i think i got a high b in both bio and chem. I need an a to take bio for a level. Do you think it will balance out. What are some very basic points i could write about likely questions on what I've missed out in p5?
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ed__
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(Original post by ed__)
ahh ive messed up physics so bad and i haven't even done it yet. Let me put it this way I've done very rough revision on p4,p5,and p6 but have missed out all the induction transformer and motor stuff, two pages of p6 and am still doing p6 so i think ill be getting a low c on this exam. My coursework's 60 out of 64, i think i got a high b in both bio and chem. I need an a to take bio for a level. Do you think it will balance out. What are some very basic points i could write about likely questions on what I've missed out in p5?
sorry that wasn't supposed to be a reply
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Sulfur
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#1472
(Original post by ed__)
ahh ive messed up physics so bad and i haven't even done it yet. Let me put it this way I've done very rough revision on p4,p5,and p6 but have missed out all the induction transformer and motor stuff, two pages of p4 and am still doing p6 so i think ill be getting a low c on this exam. My coursework's 60 out of 64, i think i got a high b in both bio and chem. I need an a to take bio for a level. Do you think it will balance out. What are some very basic points i could write about likely questions on what I've missed out in p5?
This doesn't really help but I got 60/64 on my Physics and it's 96/100 UMS - so you've got some security.
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User1452521
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(Original post by ed__)
ahh ive messed up physics so bad and i haven't even done it yet. Let me put it this way I've done very rough revision on p4,p5,and p6 but have missed out all the induction transformer and motor stuff, two pages of p4 and am still doing p6 so i think ill be getting a low c on this exam. My coursework's 60 out of 64, i think i got a high b in both bio and chem. I need an a to take bio for a level. Do you think it will balance out. What are some very basic points i could write about likely questions on what I've missed out in p5?
If your doing additional science it will balance up, but if your doing triple science It might not, I'm not entirely sure cos coursework is only 25% of overall physics gcse


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ed__
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(Original post by Sulfur)
This doesn't really help but t got 60/64 on my Physics and it's 96/100 UMS - so you've got some leeway.
ah i hope it saves me! as long as i do can go to the sixth i want thats all I wanted out of gcses and i left physics to last 4 hour revision aha from how much you help other you look very prepared? I'm saying this and i mean it i really do hope you get a good mark purely because of how your willing to try and help other when you could be revising (I'm feeling emotional because I'm going to fail physics) haha good luck x
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ed__
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(Original post by brodingoson)
If your doing additional science it will balance up, but if your doing triple science It might not, I'm not entirely sure cos coursework is only 25% of overall physics gcse


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thanks and I'm doing additional so hopefully it will
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lyricalvibe
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#1476
(Original post by Sulfur)
This doesn't really help but I got 60/64 on my Physics and it's 96/100 UMS - so you've got some security.
Do you know what full ums is?
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User1452521
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(Original post by Sulfur)
This doesn't really help but I got 60/64 on my Physics and it's 96/100 UMS - so you've got some security.
I got 46/64 in coursework, can I get an A* overall if I get all A*'s in exams?


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Amyjonesx
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(Original post by brodingoson)
I found it, sorry for bad quality:
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Wow thankyou so so much!! I hope everyone on tsr gets the grades they want we all deserve it
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Sulfur
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#1479
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#1479
(Original post by lyricalvibe)
Do you know what full ums is?
Probably 63-64

(Original post by brodingoson)
I got 46/64 in coursework, can I get an A* overall if I get all A*'s in exams?


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I believe so, but you'll need high A*s (95+ UMS in each exam I believe).

(Original post by ed__)
ah i hope it saves me! as long as i do can go to the sixth i want thats all I wanted out of gcses and i left physics to last 4 hour revision aha from how much you help other you look very prepared? I'm saying this and i mean it i really do hope you get a good mark purely because of how your willing to try and help other when you could be revising (I'm feeling emotional because I'm going to fail physics) haha good luck x
I feel a bit prepared! I really hope that you also get a good mark too, and since your coursework was good and I'm sure your other units are so I doubt that you need to worry about failing Physics - a grade C is about 20% so I think so you'll easily get above that I'm sure! Good luck too and don't be emotional, like I said, the boundaries will be low as they've always been and you've revised some of the topics which I'm sure will get you your grade (plus the safety net of coursework helping you out ).
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DDan123
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#1480
Now im confident about tomorrow. Only took a whole day of revision
Anyways good luck everyone for tomorrow!. Hopefully the paper will be a nice one aha.


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