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2015 GCSE 21st Century Physics P1 P2 P3 watch

1. Good luck guys,i wish u the best
2. you too!! any idea of what may come up??
3. You know the specification statement: "Understand how rocks provide evidence for changes in the Earth (erosion and sedimentation, fossils, folding)" what exactly does it mean? Can someone explain pls
4. (Original post by kxylah)
You know the specification statement: "Understand how rocks provide evidence for changes in the Earth (erosion and sedimentation, fossils, folding)" what exactly does it mean? Can someone explain pls
5. (Original post by Vanilla Poison)
How does erosion, sedimentation, fossils and folding come into seafloor spreading? (lool sound so stupid rn)
6. (Original post by kxylah)
You know the specification statement: "Understand how rocks provide evidence for changes in the Earth (erosion and sedimentation, fossils, folding)" what exactly does it mean? Can someone explain pls
Isn't it like the rock cycle aswell?? And how like the oldest rocks are at the bottom , which can tell us about the age of the earth

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7. ohhhh and you know how the mantle is a solid then how do tectonic plates float on a solid
8. (Original post by kxylah)
ohhhh and you know how the mantle is a solid then how do tectonic plates float on a solid
Well the mantle is said to have the properties of a solid but the mantle can flow VERY slowly allowing the movements of tectonic plates

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9. (Original post by kxylah)
ohhhh and you know how the mantle is a solid then how do tectonic plates float on a solid
Basically...
when studying rocks, it tell us about the Earth's structure and how it has changed.

Through the erosion process we can tell that the Earth's surface is made of rock layers. The oldest rock is usually at the bottom. the layers are compacted sediment, produced by weathering and erosion.

when looking at mountain formation we can tell that the earth would have eroded down to sea level if mountains weren't being formed.

we can look at craters on the moon, as the surface is covered with impact craters from meteors, we can also tell that they have hit earth but have been erased by erosion.

we can also look at the radioactivity of rocks. A rock's radioactivity decreases over time and radioactive dating measure radiation levels to find a rock's age.

we can also look at fossils of animals and plants in sedimentary rock layers, which shows how life has changed.

Most of these are in the revision guide.
10. (Original post by kxylah)
ohhhh and you know how the mantle is a solid then how do tectonic plates float on a solid

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11. Does anyone know what 2 factors produce rock stripes of alternating polarity? don't understand that shizz
12. What do you guys think the 6 markers will be on. I'm so stuck!
13. (Original post by An-Mi-Ah)
Does anyone know what 2 factors produce rock stripes of alternating polarity? don't understand that shizz
So as magma that rises from the mantle cools, it gets band of normal or reversed polarity. This is due to the iron in the magma aligning with the earth's magnetic field which changes direction every half a million years. These bands will be symmetrical either side of the oceanic ridge showing clear patterns. This is convincing evidence that new sea floor is being made and continents are moving apart.

Let me know if that explanation isn't good enough!
14. To say the least, I'm panicking so much. Although P123 is one of my stronger physics module "groups" I'm still stressing since I suck at Physics. Literally.
15. (Original post by abbeyjayne)
To say the least, I'm panicking so much. Although P123 is one of my stronger physics module "groups" I'm still stressing since I suck at Physics. Literally.
Same the thing is though all of the 1,2,3s are all the easiest modules out of the 7 so it can only get harder

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16. (Original post by beth000)
Same the thing is though all of the 1,2,3s are all the easiest modules out of the 7 so it can only get harder

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1234 and 7 are okay for me just 5 and 6 i'm useless at
17. You guys have an idea what might the 6 markers be????
18. (Original post by flakeface)
so as magma that rises from the mantle cools, it gets band of normal or reversed polarity. This is due to the iron in the magma aligning with the earth's magnetic field which changes direction every half a million years. These bands will be symmetrical either side of the oceanic ridge showing clear patterns. This is convincing evidence that new sea floor is being made and continents are moving apart.

Let me know if that explanation isn't good enough!
thaaaaaaaanks :d
19. I feel suicidal looking at P3 formulas D:
20. (Original post by An-Mi-Ah)
Basically...
when studying rocks, it tell us about the Earth's structure and how it has changed.

Through the erosion process we can tell that the Earth's surface is made of rock layers. The oldest rock is usually at the bottom. the layers are compacted sediment, produced by weathering and erosion.

when looking at mountain formation we can tell that the earth would have eroded down to sea level if mountains weren't being formed.

we can look at craters on the moon, as the surface is covered with impact craters from meteors, we can also tell that they have hit earth but have been erased by erosion.

we can also look at the radioactivity of rocks. A rock's radioactivity decreases over time and radioactive dating measure radiation levels to find a rock's age.

we can also look at fossils of animals and plants in sedimentary rock layers, which shows how life has changed.

Most of these are in the revision guide.

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Updated: June 23, 2017
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