the sudden movement of earth materials down a slope
landslide or mudslide
15
melted rock BELOW the Earth's surface
magma
15
an opening in the Earth's crust where lava, cinders, ash, and gases come to the surface
volcano
15
plants and animals that became buried under sediments millions of years ago, then slowly transformed into deposits of carbon-rich substances, such as coal, petroleum, and natural gas
fossil fuel
20
melted rock erupting onto the Earth's surface from a volcano
lava
15
alternatice energy source that comes from hte internal heat of the earth
geothermal power
20
a material such as soil or water that comes from the natural environment
natural resource
15
a resource that is not replenished because it takes extended geological periods to form such as rocks, minerals, and fossil fuels
nonrenewable resource
20
a resource that naturally replenished continuously and quickly, such as sunlight, water, and air
renewable resource
15
an alternative energy source from the sun that drives the water cycle and produces wind, ocean waves, and flowing water in rivers and streams
solar energy
15
an alternative energy source that uses the power of the wind
wind power
15
a large amount of water flowing over land that is usually dry
