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vocabulary
structures
earth
ecosystems
heat
100
images of earlier life forms found in rock
What are fossils?
100
large underwater pits
What is trenches?
100
where living things interact with non-living things
What is an ecosystem?
100
a resource formed from the remains of plants and animals that lived on the earth a million years ago
What is fossil fuels?
200
the limits within which a structures performance is felt to be acceptable
What is Margin of Safety?
200
large underwater mountains
What is ridges
200
living things
What is biotic?
200
the cost in dollars that you spend on fossil fuels
What is economical cost?
300
a rating on insulation
What is R-value?
300
capacity of a structure to support its own load and the load applied
What is structural strength?
300
tectonic plates moving apart
What is diverging?
300
non-living
What is abiotic
300
energy generated by moving water through a dam
What is hydro-electric energy?
400
thermal heat remaining deep in the earth
What is geothermal heat?
400
ability of a structure to maintain its position when forces are applied
What is structural strength?
400
tectonic plates moving inward
What is converging?
400
living things that are the same kind and so they can reproduce
What is species?
400
energy moving through the air - captured by windmills
What is wind energy?
500
process that moves soil from one point to another - plant roots stop this from happening
What is erosion?
500
a push or pull that tends to cause an object to change its movement or its shape
What is force?
500
rock beds moving because of cracks
What is faults?
500
all populations of different species living and interacting in the same place
What is community?
500
a natural resource that can never be replaced
What is a non-renewable resource?