Aqa triple science *official thread* *2016* (gcse)

Terminal velocity: when air resistance is = to your weight, then you reach a terminal velocity. This is the highest velocity attainable by an object as it falls through air. All inaminate objects, and humans, have momentum and thus have atleast two forces acting on them. [Weight and Air Resistance] Thus when you fall in the air, its these two forces that act on you. But which one is bigger? If your falling at a high velocity in the air, which will be bigger, air resistance or weight? Air resistance, but weight will also be acting upon you but at a lower distribution. Air resistance exists because air molecules collide into a falling body creating an upward force opposite gravity. This upward force will eventually balance the falling body's weight. Parachutes lower the terminal velocity, so its safe for you to land on the ground. If not then,

Electromagnetic, is when you have an iron core (in appliance) and as there is a changing magnetic field in the iron core, an current/pd is induced along the ends of a secondary coil attached to a primary coil. If there was an d.c instead of a.c, no current would be changed and thus the p.d would be 0.

Motor effect: when a wire cuts the field lines of a magnetic field, it causes a force to act on the wire. If you resemble, with flemings left hand rule you can find the direction/current etc. Its hard to explain on here but i'll leave a link below.

http://www.bbc.co.uk/schools/gcsebitesize/science/triple_aqa/keeping_things_moving/the_motor_effect/revision/3/[/QUOTE]

OMG thank you sooooo much!!! Much appreciated

Hey guys I've got a quick question
For biology ISA i got an A is it possible for me to get an A* overall ?!

Hey guys I've got a quick question
For biology ISA i got an A is it possible for me to get an A* overall ?!

Some people think the B1 6 marker could be drugs? But thalidomide seems too short to be 6 marks? Or could it be talking about the stages in approving a drug? (double blind trial..)

Has anybody here done the Physics ISA? Horrible return to school for me as we just had today to write the notes down for Paper 1 and the exam is tomorrow. The ISA is on LED's. Anybody done this here?

Yup..easy...46/50 - A*

Did you do the LED based paper? If you did can you help me please?

I also did it

i am struggling with ideas on how to revise science , any ideas would be greatly appreciated and also does anyone know where i can find like practice questions to do (NOT PAST PAPERS) thank you

I subscribed to my-gcsescience.com which has revision videos and practise questions for each topic with mark scheme. They're really worth the money! He has all of core on his youtube which you can watch free

Yup..easy...46/50 - A*

My school is still teaching us C3 now! I'm worried about the course being so crammed!

A weird question but in like a 3 mark question, if the mark scheme shows that if you write specific 3 words in your answer you would get 3 marks. So if I write those 3 words only and nothing else would I still get all the marks or would I have to expand on the points?

I know its a bit of a long question

usually with a 3 marker the points link. It wouldn't make sense to just list the three words for the marks, but you don't have to expand on them. U have to make sure you link and include the words in your sentence or answer to get the three marks.