the materials on Earth that are available for us to use
What are natural resources?
What are petrochemicals?
the sun's energy
What is solar energy?
soft and shapeable
What is malleable?
the path water takes as it travels from land to sky and back to land
What is a water cycle?
What are renewable resources?
a factory that separates crude oil into different products
What is a refinery?
holding areas for water
What are reservoirs?
a solid substance found naturally in the earth's surface
What is a mineral?
when fields are resting
What is fallow?
resources that cannot be replaced easily
What are nonrenewable resources?
petroleum drawn out of the earth from wells
What is crude oil?
produced as water flows from the reservoirs and turns turbines
concentrated areas of specific minerals
What is a vein?
a low-growing crop
petroleum, natural gas, and coal
What are fossil fuels?
a fossil fuel found in a gaseous state
What is natural gas?
uses heat from the Earth to produce steam
What is geothermal energy?
materials with usable amounts of metal in them
What are ores?
a method used by farmers to help keep water from washing soil away
What is contour plowing?
"liquid rock"; a liquid form of fossil fuel
What is petroleum?
fossil fuel formed from plant material that was quickly buried and fossilized under great pressure
What is coal?
air movements
What is wind energy?
a process used to separate metal in the ore from the other materials
What is smelting?
all of the Earth's water found in lakes, oceans, streams, rivers, soil, underground, and in the air
What is the hydrosphere?