water cycle
What is the formula for water?
H2O
The exchange of carbon in the environment
carbon cycle
What is the symbol for nitrogen
N
gas that is released from plants
oxygen
___ is an educated guess
hypothesis
rain, snow, sleet, or hail are forms of _____
precipitation
what is the formula for carbon dioxide
CO2
Nitrogen is a-
a. solid. b. liquid. c. gas
gas
burning of fossil fuels
combustion
which circuit has more than one path for electricity to follow
parallel circuit
Which process occurs when water vapor cools?
condensation
What process do plants use to produce sugar
photosynthesis
the movement of nitrogen between the environment
nitrogen cycle
organisms that breakdown dead material for nutrients
decomposers
Which is a good conductor?
a. glass. b. aluminum. c. wood
aluminum
when a liquid changes to a vapor-
evaporation
process that animals use that release carbon dioxide
respiration
the breakdown of substances into simpler molecules
decomposition
process of water droplets on leaves
transpiration
a substance that is evenly mixed
homogeneous
The movement of water between oceans, atmosphere, & land-
water cycle
C6H12O6
what percent of the atmosphere is nitrogen?
78%
water under the ground is called
groundwater
Mass divided by volume = _________
DENSITY