Junior Cert Science 2012 (HL & OL)

Increasing Meteornium

Why in the name of God is everyone so convinced the answer is rust? How could that even be the case?

Spook_ie

if you google 'images of railway track buckled by heat' and then click on images.....well there's your answer !!!! defo curious how people thought it was rust/corrosion..........

jd6920s

I said corrosion due to acid rain ? It said what environmental factor caused this so I guessed it , will i get any marks ?

Increasing Meteornium

jd6920s wrote: »

I said corrosion due to acid rain ? It said what environmental factor caused this so I guessed it , will i get any marks ?

I wouldn't think so, considering it has nothing to do with corrosion.
You didn't miss out on a whole lot of marks anyway, so it's not too bad.

A7XGirl

For the question on forces, did anyone else put gravity? I said that it keeps us on the ground....is it wrong?

xEurophia

^ I said a supernatural force and the effects are traumatizing Well getting an A

harich56

For Chemistry on Q4 (d) the pipe. I put the reason is hardness in water. I also said it deposits a Scum. Are those right????

Footy2k12

harich56 wrote: »

For Chemistry on Q4 (d) the pipe. I put the reason is hardness in water. I also said it deposits a Scum. Are those right????

Yeh I got dat too

Footy2k12

A7XGirl wrote: »

For the question on forces, did anyone else put gravity? I said that it keeps us on the ground....is it wrong?

Yep i got dat

Oozamine

I said limescale

AnswerPlz

For the increase in pressure does the boiling point increase?

bigben121

AnswerPlz wrote: »

For the increase in pressure does the boiling point increase?

Ye correct

2creator

Wait, so the source in 9D was sound? Gravity doesn't require contact to work though...

Junokevv

For the one about the Electricity reader thing could you say 2 benefits were:

It tells you the date and time.

It can be place anywhere around the home, conveniently on the wall.

dalta5billion

2creator wrote: »

Wait, so the source in 9D was sound? Gravity doesn't require contact to work though...

You could argue that sound isn't it too, because it does involve vibrating the air molecules, but I'd say they'll accept both. I said gravity personally.

sunshine547

EoghanIRL wrote: »

the marking scheme has not been made yet so i do not think anyone can answer the question. I put rust down aswell because i thought that it was too warped to be heat expansion

same here!!
I was actually going to write down heat though.........then went with rusting ugh idk

Troxck

dalta5billion wrote: »

You could argue that sound isn't it too, because it does involve vibrating the air molecules, but I'd say they'll accept both. I said gravity personally.

So, is gravity technically right?

Lor1963

For the one where ye all said gravity could you say heat and that it makes objects expand like bimetallic strips?

Troxck

Lor1963 wrote: »

For the one where ye all said gravity could you say heat and that it makes objects expand like bimetallic strips?

Well, heat moves through solids in the form of conduction so probably, I don't remember what the questions was

A7XGirl

Lor1963 wrote: »

For the one where ye all said gravity could you say heat and that it makes objects expand like bimetallic strips?

I don't think so because heat requires contact with the bimetallic strip..I'm not sure anyways. I just said gravity.

iWin1010

By far the hardest exam for me!!! I literally forgot everything for biology.
Chemistry was probably the easiest and Physics wasn't that bad apart from the LDR question :(:(
I was really hoping 'electronics' would not come up as I don't understand sh!t in it!
Ah well maybe i'll scrape a 'C':cool::cool::cool:

Daledge

I don't think sound is the answer because it requires a medium to travel through, in saying that I can't be sure. Personally I put down gravity.

Daledge

Actually scratch that.. I think the two possible answers are in fact gravity or radiation. It's a bit of a loose source but it's better then nothing.
Source: http://wiki.answers.com/Q/What_are_forces_that_can_act_on_an_object_without_touching_it

IloveConverse

'The Institute of Physics in Ireland has launched a campaign to have the new bridge across the Liffey in Dublin at Marlborough Street named after Ernest Walton, Ireland’s only physics Nobel prizewinner.
As the Institute’s website puts it:

Ernest Walton (1903-1995) was one of the most respected scientists of the 20th century, thus maintaining a tradition in Ireland that reached back to the seventeenth century.
In 1932 he and his co-worker John Cockcroft were the first to artificially split the atom in a controlled fashion in the Cavendish Laboratory in Cambridge, which was the leading research centre in the world in atomic and nuclear physics research at that time. Walton had enrolled as a PhD research student following his remarkable achievements as an undergraduate in Trinity College Dublin.
The experiment had several important outcomes including the verification of Einstein’s famous equation relating mass and energy, E=mc2. Walton was at the birth of modern physics, as carried out in CERN and elsewhere throughout the world.
This new experimental capability greatly enhanced scientific research in many fields of endeavor including studies into the origins of the Universe itself.
Walton and Cockcroft’s invention of a particle accelerator capable of splitting the atom for the first time earned them the Nobel Prize in Physics in 1951: To date, Walton remains Ireland’s only Nobel Prize winner in the sciences.'

http://www.surveymonkey.com/s/Walton_Bridge

Please sign the petition!

Lor1963

Daledge wrote: »

Actually scratch that.. I think the two possible answers are in fact gravity or radiation. It's a bit of a loose source but it's better then nothing.
Source: http://wiki.answers.com/Q/What_are_forces_that_can_act_on_an_object_without_touching_it

would I get anything saying heat?

paddyzk

Lor1963 wrote: »

would I get anything saying heat?

I don't think so,its far too broad.

SweetCaliber

paddyzk wrote: »

I don't think so,its far too broad.

Not necessarily, heat causes expansion to metals and thats what happened by far.

DaleHyland

Just a question with regards to the atmospheric pressure question , would it be wrong to say the graph / the boiling point
is nearly directly proportionate within margin of error? Every increment of 20 pressure units raised the boiling point by 5-5-4-5-5 . Surely you could say that it's proportionate ?

paddyzk

DaleHyland wrote: »

Just a question with regards to the atmospheric pressure question , would it be wrong to say the graph / the boiling point
is nearly directly proportionate within margin of error? Every increment of 20 pressure units raised the boiling point by 5-5-4-5-5 . Surely you could say that it's proportionate ?

I said that,it makes sense.

Layzerman

DaleHyland wrote: »

Just a question with regards to the atmospheric pressure question , would it be wrong to say the graph / the boiling point
is nearly directly proportionate within margin of error? Every increment of 20 pressure units raised the boiling point by 5-5-4-5-5 . Surely you could say that it's proportionate ?

As long as you said nearly directly proportional, then you should get marks; they weren't exactly directly proportional