Show:
Mining
Rock Cycle
Igneous Rocks
Sedimentary Rocks
Metamorphic Rocks
100
What is an ore?
deposits that can be mined for profit
100
What is the rock cycle?
The continuous changing of rocks from one form to another
100
How are igneous rocks formed?
melting and cooling
100
How are sedimentary rocks formed?
combining of sediments through processes of WEDCC
100
How are metamorphic rocks formed?
heat and pressure
200
Name 2 out of the 4 classifications of ores and give one example for each.
metallic minerals-nickel, copper, zinc, gold, silver fuel ores-coal, oil, natural gas industrial minerals-gypsum, potash, rock salt structural minerals-sand, gravel, clay
200
What is erosion?
process by which weathered rock particles are moved from one place to another
200
What is the difference between extrusive and intrusive igneous rocks?
extrusive rocks are formed on the Earth's surface and intrusive rocks are formed underground
200
What are organic sedimentary rocks made from?
the remains of plants and animals
200
Where on/in the Earth do metamorphic rocks usually form?
deep underground inside the Earth
300
Name two ways that geologists try to find mineral or rock deposits.
sattelite imagery, geophysics (mapping), geochemistry (soil/core sampling),
300
What is cementation?
When sediment particles are "glued" together
300
What is the name of a red-colored extrusive fast-cooling igneous rock with more than 50% holes?
scoria
300
What are clastic sedimentary rocks made from?
fragments of other rocks
300
What is a foliated rock?
A rock with stripes/bands of particles, often looks "stripey"
400
What type of mine has the largest environmental impact?
open-pit mine
400
What is the difference between compaction and pressure? What types of rocks are each of these associated with?
compaction is a light pressing together in sedimentary rocks, pressure is a much greater force usually in metamorphic rocks
400
What is the relationship between crystal size and cooling time?
The slower a rock cools, the more/bigger crystals there are
400
What sedimentary rock is formed from river rocks and pebbles are cemented together with river sand and mud?
conglomerate
400
Which metamorphic rock is course textured, made from granite, and has distinct particles and foliation?
gneiss
500
What type of mining is the most dangerous, but also has the least impact on the environment?
underground mining
500
What is weathering? Give 3 examples of things that cause weathering.
the breaking down of rocks and other materials on the Earth's surface-wind, rain, sun, snow, etc.
500
What is the difference between magma and lava?
They are the same thing (molten rock) but magma is the term used when it is underground and lava is the term used when it is above ground
500
What are 3 of the 4 main characteristics of sedimentary rocks?
thick layers, loosely compacted, distinct particles, dull
500
Name 3 of the 4 characteristics of metamorphic rocks
thin layers, tightly compacted, blurred particles, shiny