AQA Combined Science Trilogy [higher] Physics paper 1 Revision material and predictio

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Reply 40

sonu2003

How did you get those predictions like what did you base them on

Original post by sqrt of 5

no thats why i said here's my prediction ^-^

Reply 41

Tolgash

Original post by sqrt of 5

no thats why i said here's my prediction ^-^

Your predictions are 'always accurate' according to your last comment. Any evidence that you were able to predict precisely what would appear on the first biology and chemistry papers?

Reply 42

sqrt of 5

Original post by Tolgarda

Your predictions are 'always accurate' according to your last comment. Any evidence that you were able to predict precisely what would appear on the first biology and chemistry papers?

yes for biology if you give me a sec ill try to find the piece of paper. for chem i just thought went through last year paper

Reply 43

sonu2003

However, I personally think you can't 100% be sure of whats gonna come up on the paper, you might have got lucky with the biology one, but Its just better to revise all of the topics anyway just incase :smile:

Reply 44

sqrt of 5

Original post by Tolgarda

Your predictions are 'always accurate' according to your last comment. Any evidence that you were able to predict precisely what would appear on the first biology and chemistry papers?

https://www.thestudentroom.co.uk/showthread.php?t=5942880 here is bio nothing on b6 i think came up but there rest was there

Original post by sonu2003

i revised everything that didnt came up

Reply 45

sonu2003

I think questions on the national grid is gonna come up this year.

Reply 46

Pro Gamer 2003

Does anyone have tough physics questions to try because I find them so easy.

Reply 47

sonu2003

Ok 5 questions (First 2 is easy but it get tougher and harder):
a) Whats the purpose of a variable resistor?

b) What is meant by radioactive Isotope?

c) Potassium-39 does not undergo radioactive decay, what does this tell us about potassium-39?

d)During radioactive decay, atoms of potassium-40 change into atoms of calcium-40. Calcium-40 has an atomic number of 20 and mass number of 40. What type of radioactive decay has taken place?

e)The isotope, caesium-137, was also released during a disaster. Caesium-137 has a half life of 30 years. In what year will the activity of the caesium released in the disaster have fallen to 1/8 of the initial activity?

Original post by Pro Gamer 2003

Does anyone have tough physics questions to try because I find them so easy.

(edited 4 years ago)

Reply 48

dxnixl

Original post by sonu2003

a) To adjust the resistance of a circuit by a specified amount
b) a radioactive isotope is an isotope with an unstable nuclei that releases radiation in a process known as radioactive decay.
c)Potassium-39 has a stable nucleus.
d)beta radiation as it ejected a fast moving electron when a neutron turned into a proton.
e) 1/8 = 1/2 * 1/2 * 1/2 = 3 half lives. 3 * 30 = 90 years. So in 90 years it would have fallen to 1/8 of initial activity.

Thanks for questions, could somebody confirm their correct or give improvements! It's appreciated :smile:

Reply 49

sonu2003

U got them all correct :smile:

Original post by zackforest

Reply 50

sonu2003

Another thing that they might put into our Exam this year is the uses and disadvantages of Renewable and Non-renewable Energy resources.

Reply 51

sonu2003

Also there might be stuff on the national grid etc

Reply 52

sonu2003

Btw, what revision guides do you all use for your revision for Science?

Reply 53

sqrt of 5

Original post by sonu2003

Btw, what revision guides do you all use for your revision for Science?

cgp and mygcsescience. if you want any videos from there lmk they are very helpful

Reply 54

sonu2003

Thank you

Original post by sqrt of 5

cgp and mygcsescience. if you want any videos from there lmk they are very helpful

Reply 55

username4599420

Ahhhhhhhhhh 🤤🤤🤤🤤🤤🤤
I feel so unprepared- I have revised so much but I am scared that it's just going to fly away in the exam. 😥
I hate physics, it's my worst subject and I am crapping myself atm.
I am aiming for a 6 at the very least.
Any ways to revise that are not staring at a screen or revision book?