Vocabulary
Energy from the heat inside Earth
geothermal energy
the first stage in coal formation
peat
Harmful materials released into the environment
pollution
Energy from plants and animal waste
biomass
Using less of something
reduce
trash buried in the ground
landfill
This type of coal has the MOST energy.
anthracite
Thick, dirty air often found in cities
smog
Energy from moving water
hydroelectricity
Using something again instead of throwing it away
reuse
a resource that can be found naturally
renewable resource
Fuel formed from the remains of living things
fossil fuels
Rain mixed with harmful chemicals from pollution
acid rain
Energy that comes from sunlight
solar energy
Turning old materials into new ones
recycle
Waste that is poisonous to living things
toxic waste
Why fossil fuels are nonrenewable
they take millions of years to form
A cause of smog
pollution from cars and factories
Device that turns sunlight into electricity
solar cell
Why the 3 R’s are important
They reduce waste and protect resources
Material that can break down naturally.
biodegradable
Correct order of coal formation
peat → lignite → bituminous → anthracite
Two examples of pollution
air pollution and water pollution
Best energy source for places with lots of rivers
hydroelectricity
Two ways to save energy at home
Turn off lights, use less electricity