10. Rocks atmospheres moon planets - atmospheric and geological comments

* GCSE Earth Science: 10. Extension! Rocks on the Moon and Planets at Doc Brown's

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Doc Brown's Chemistry - Earth Science Revision Notes

10. An extension - Rocks and atmospheres on our moon and other planets - a few atmospheric and geological comments!

Revision KS4 Science IGCSE/O level/GCSE Chemistry Information Study Notes for revising for AQA GCSE Science, Edexcel 360Science/IGCSE Chemistry & OCR 21stC Science, OCR Gateway Science (revise courses equal to US grades 9-10)

based on a GCSE Geological & Earth Science TASK SHEET * Earth Science Homepage * 5 multi-word fill GCSE worksheets + answers * GCSE Earth Science Quiz: Foundation-easier m/c Quiz and Higher-harder level m/c Quiz

ANSWERS-NOTES 1. The Evolution of the Earth's atmosphere and Carbon Cycle ... 2. The Rock Cycle and types of rock (details 'evolve' through sections 3. to 9.) ... 3. Weathering of Rocks ... 4. Igneous Rocks ... 5. Sedimentary Rocks ... 6. Metamorphic Rocks ... 7. The Structure of the Earth ... 8. Plates and their movement ... 9. Plate Tectonics ... 10. The Moon and Planets

10. Extension! Rocks on the Moon and Planets What atmosphere and rocks are out there beyond Earth?

10(a) There would be little or no oxygen like all of the other planets, no photosynthesising life on them, but they have gases such as hydrogen, ammonia, methane and carbon dioxide on planets which you find in the atmosphere of Jupiter, Saturn, Neptune and Uranus.

All these planets are believed to have rocky icy cores but there chemical composition is unknown.

10(b) On Mars there appears to be eroded, but now dry, river beds and cliffs showing 'weathered' or 'erosion' features.

10(c)

The moon does NOT have an atmosphere, its mass, and hence its gravity, is too low to hold on to an atmosphere.
There are no sedimentary rocks on the moon because there is no atmosphere, so there has been no weather to bring about erosion, transportation, deposition and compression to form sedimentary rocks.
There will be metamorphic rocks on the moon because there is evidence of volcanic activity and even igneous rocks when heated can re-crystallise to form a 'new' metamorphic rock.

10(d)(i) The surface on Venus is much hotter than the Earth, not only because it is closer to the Sun, but because it has a dense atmosphere of mainly carbon dioxide. This produces a Super-Greenhouse-Effect!

10(d)(ii) The surface on Mars is much colder than Earth, not only because it is further away from the Sun, but because it has very little atmosphere even though its mainly carbon dioxide. This means there is little of the so-called 'Greenhouse-Effect', i.e. little trapping of re-radiated infrared heat radiation from the surface of Mars.