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Holt:Chapt. 11, Test

Energy; Renewable and Non Renewable

Describe non renewable resources. Limited supply and the item cannot be naturally replaced in a human life time.
Discuss renewable resources. Resources such as water, air & plants that can be replaced within a human life time.
Describe metals. Minerals with shiny surfaces, excellent conductors of heat and electricity, and easily bent when in thin sheets.
Tell why ores are desirable. Deposits of minerals that may be removed from the ground profitably.
Define veins. Narrow fingerlike bands of ore spread through rock cracks in hot mineral solutions.
Explain the term, lode. A large number of thick veins in close proximity below the surface.
Describe placer deposits. Concentrations of ore at the bottom of stream beds due to the high density of metals such as gold and silver.
Define gemstones: Rare mineral crystals that display brilliance and clarity and as such are selected for jewelry.
Discuss conservation. The mindful act of preserving valuable resources for our posterity and future generations through recycling and the like.
Explain fossil fuels. Compounds of hydrocarbons which contain abundant energy per unit of mass or volume; including coal and petroleum.
Permeable rock possesses what characteristic? Water can flow through it.
Define crude oil. Unrefined petroleum.
Name the single most popular use of the fossil fuel, coal. Energy source in the production of electricity.
Where does acid rain come from? The main source is burning coal which contains sulfur that combines with water to form dilute sulfuric acid which comes back to Earth's surface via rain.
Define nuclear fission. The splitting of the nucleus of a large atom into two or more smaller nuclei.
Explain nuclear fusion. Nuclei of two small atoms combine to form a single larger nuclei plus energy.
Solar energy is desirable, why? The energy from the sun is free and abundant and pollution free.
Discuss geothermal energy. The tapping of heat from Earth's interior.
Describe hydroelectric power. The use of energy contained within falling water, such as a waterfall or a dam, to spin turbines and generate electricity.
Created by: whearn