A
Materials available on Earth for mankind's use.
natural resources
Formed from remains of plants & animals buried quickly
fossil fuels
factory that separates crude oil into different products
refinery
chemical produced from oil
petrochemicals
most abundant metal
aluminum
resources that can be replaced relatively quickly
Renewable
resources cannot be replaced easily
nonrenewable
mineral used to produce nuclear energy
uranium
concentrated area of specific minerals
vein
farmers can do this to increase crop production
rotate crops & have land lie fallow
solid substance found naturally in the Earth's surface
minerals
able to be dented or shaped
malleable
process used to separate metal in ore from other materials
smelting
valuable metal that often indicates wealth
gold
farmer can use this to prevent erosion in a field with no crop planted
ground cover
farmer can do this to prevent erosion on a hill
contour plowing
all Earth's water
hydrosphere
water returns to sky through...
transpiration & evaporation
water returns to earth as ...
precipitation
path water takes asit travels from land to sky and back to land
water cycle
layers of sand, gravel or bedrock that hold ground water
floating pieces of glaciers, ice sheets, ice shelves
icebergs
floating ice sheet
ice shelf
sea ice
Is nuclear energy renewable or nonrenewable
nonrenewable