6th Grade Chapter 3: Natural Resources Flashcards
layer of sand, gravel, or bedrock that holds and moves ground water
aquifer
formed when the remains of plants and animals are buried quickly
fossil fuel
floating ice shelf
ice shelf
solid substance found naturally in the earth’s surface
minerals
factory that separates crude oil into different products
refinery
mineral that is used to produce nuclear energy
uranium
concentrated area of a specific mineral
vein
forms when sea water freezes
sea ice
resource that can be replaced by natural means in a relatively short amount of time
renewable resource
metals that can be dented or shaped
malleable
most abundant metal in the earth’s crust
aluminum
all of the earth’s water
hydrosphere
uses steam from the earth to turn turbines and produce energy
geothermal energy
list some fossil fuels
coal, natural gas, petroleum
problems of using fossil fuels
air pollution, oil spills, soot and sulfur gas
best way to prevent erosion on empty fields
planting a ground cover crop
best way to increase crop production after using fields for years
letting fields lie fallow (empty) for a time
disadvantage of wind and solar energy
large land areas needed, expensive
advantage of geothermal energy
plants are inexpensive to build and operate
advantages of windmills/wind power
no pollution, renewable, little maintenance
water stored beneath the surface of the earth
ground watertrans
water returns to the sky through these 2 processes in the water cycle
transpiration and evaporation
all the materials on the earth available for man’s use
natural resources
advantages and disadvantages of nuclear energy
efficient and clean, but can be dangerous because of radiation, used fuel needs special storage to keep environment safe.
