Geology(Renewable Resources,Layers of Earth,Rock Types,Rock Cycle,Mineral Determination) Flashcards
Coal
Is it renewable?
No!
Are photons a renewable resource?
YES!They come from sunlight which is determined renewable because it will continue to work for a large amount of time and works constantly during that time
What is tidal energy?
It is energy that is generated from the natural action of the tide which pushes a turbine that generates electricity.
What are the parts of a wind turbine and how do they function?
Rotors are pushed by wind ad the nacelle converts the movement into electricity.
Define a renewable resource
A resource that will continue to function for a large period of time or indefinitely and can renew itself rapidly.
What layer of the earth is liquid?
Outer core
What is the hottest layer of the earth?
Inner core
What is the densest layer of the earth?
Mantle
What layer of the earth contains the transition zone?
Mantle
What is the thinnest layer of the Earth?
Crust
Why is the inner core solid but the outer core liquid?
Because of the immense pressure that the inner core receives exceeds the heat in the heat and pressure curve that determines the state of a solid liquid or gas
What type of rock is formed when a volcano spews lava that cools on the surface of the earth?
An extrusive igneous rock
What is the difference between extrusive and intrusive igneous rocks?
Intrusive igneous rocks cool below the ground as magma and extrusive igneous rocks cool above the surface after they have been deemed lava.
Explain the process that creates a sedimentary rock
Little grains and molecules are weathered off the surface of an ordinary rock and carried away by agents of erosion such as snow ,water,wind and gravity and then taken to a place where they are compressed and compacted to form a sedimentary rock.
What are the key triggers a rock needs to metamorphose
Heat and pressure
What is a distinct feature of a extrusive igneous rock
Usually have little holes from the places where the bubbles were
Why is color an unreliable way to distinguish minerals ?
Because certain rocks may occur in multiple colors and different rocks may be the same color
How is hardness determined?
Using the mohs scale which determines hardness based on relative hardness to other substances
What are the three other ways to identify minerals
cleavage(how a mineral fractures) lustre (how it shines earthy for not very shiny,vitreous for fairly metallic for very shiny) and density
What is common in the crust?
Light Silicates
Where would you find bridgemantite?
Lower Mantle
What is a quality of all the layers?
The further down you go the density increases
Where is ringwoodite commonly found?
Transition Zone
What might you find in the upper mantle?
Olivine
What can be found in the inner core?
Heavy metals and sulfides
What can be found in the outer core?
No particular metal it is all liquid
How would metals form the inner core reach the crust?
Initially those metals may rise through the outer core and find an opening in the mantle.These may be where tectonic plates have been smooched to make a volcano so that the sulfides etc. come out as igneous rocks
