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EARTH SCIENCE Q1 FINAL ROUND
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What is eutrophication?
too much nutrients in bodies of water that leads to algal bloom
What do we call rocks that can hold underground water?
Aquifers
Why should we use renewable energy?
It reduces greenhouse gas emissions, dependence on oil imports, and air pollution.
How do we generate energy/electricity from nuclear?
Nuclear chain reaction>steam generation>turbine>generator
How do we generate energy/electricity from hydropower?
moving water>turbine>generator
How do we generate energy/electricity from coal?
coal combustion>steam generation>turbine>generator
How do we generate energy/electricity from geothermal?
Hot groundwater>steam>turbine>generator
How do we generate energy/electricity from solar photovoltaic?
Sunlight>photons in the panel>electricity
How do we generate energy/electricity from wind turbines?
solar>wind>turbine moves>generator
What is the difference between renewable and nonrenewable resources?
Renewable - infinite easy to renew; non renewable - finite because it takes too long to replenish
What is the difference between color and streak?
color - most obvious; streak - powder form of color
When limestone comes into contact with strong acids like HCl it forms small bubbles. What property is described.
Effervescence
What material/basis is used to identify the hardness of a mineral?
Moh's hardness scale
Give 3 properties of minerals.
Color, Streak, Hardness, Transparency, Luster, Crystal Structure, Crystal Habit, Cleavage, Specific gravity, magnetism, taste, effervescence, fluorescence
Give one advantage and disadvantage of mining
advantage-provides resources; cons- environmental degradation/ destruction of habitat
Process of extracting ores in the Earth’s crust.
mining
What will happen if the glaciers and ice caps will melt?
Sea level will rise; low-lying areas will submerge
How does humans contribute to climate change?
carbon dioxide emissions
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