* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Earth science MIDTERM review sheet 2015 hypothesis – an educated guess neutrons have no charge, electrons are negative, protons are positive independent variable – the variable that changes in an experiment we never create or destroy matter, only change it review cleavage (breaks with a smooth, flat side), fracture (jagged break), hardness (can scratch other minerals) 6. foliated rocks- have layers 7. extrusive/intrusive igneous rocks 8. sedimentary rocks form from compaction and cementation, as well as from solutions 9. slow cooling magma forms large crystals, fast cooling magma forms tiny crystals 10. the three fossil fuels – oil, coal, natural gas 11. What is an ore and reserve? a mineral is an ore as long as it is obtainable at a profit (reserves are similar) 12. fission splits atoms, fusion joins atoms 13. review 4 inexhaustible energy resources – wind, water, sun, geothermal 14. A, B, C horizons – A is topsoil 15. 5 factors that affect soil development – time, type of parent rock, slope of land, type of vegetation, climate 16. mechanical weathering changes shape and size of rock 17. chemical weathering changes the composition of a rock 18. vegetation reduces erosion 19. how does ice wedging happen – water freezes in cracks, expands and cracks rock open 20. leaching carries minerals to the lower horizons 21. leaning trees or fences are signs of creep 22. plucking adds rocks to a glacier 23. it may take 1,000 years for new topsoil to form 24. what is no till farming – leave last year’s plants in the ground instead of plowing them under 25. review geothermal (heat from the earth), hydroelectric (energy from water), nuclear fission (splitting an atom for energy) 26. the sun uses fusion – joining two atoms 27. review soil profiles A, B and C (A is the best soil with most humus) 28. review ways to slow erosion – plant vegetation, retaining walls, farming techniques 29. ice wedging – water freezes in cracks and splits the rock 30. leaching – water carries minerals down through the soil 31. signs of creep – leaning trees or fences 32. plucking – glaciers pick up rocks as they move 1. 2. 3. 4. 5.