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20 terms

Environmental - Chapter 3

STUDY
PLAY
The universe is made of -
matter
Energy can be classified as either _____ or _____ energy.
kinetic or potential
energy stored in chemicals such as food and fuel is called _____ energy?
chemical
one example of a unit of energy is -
calories
entropy is a measure of the degree of _____ in system.
disorder
which of the following represents an abiotic component of a forest community?
water trickling along a small stream
in a chemical reaction -
atoms are rearranged to form different kinds of matter
take a big breath of air. you have mostly just inhaled -
nitrogen
living organisms draw their essential elements from -
the atmosphere, lithosphere, and hydrosphere
sometimes people say that plants make make energy from the sun. however, plants make sugars using sunlight. stating that plants make energy is actually -
a violation of the first law of thermodynamics
the tendency of a home or dorm room to become increasingly messy generally reflects -
an increase in entropy
fill in the blank:
list 3 of the 6 key elements that are found in living things-
1) nitrogen
2) oxygen
3) hydrogen
kinetic energy is energy in -
motion
potential energy is energy -
that is stored
give one of the reasons why nutrient recycling (the cycling of matter) is necessary -
it maintains an equal level of sustainability - so one thing does not run out.
T/F
energy does not have mass or occupy space.
true
T/F
energy is neither created or destroyed
true
T/F
systems will move spontaneously toward higher or maximum order or potential energy.
False
write out the complete formula for photosynthesis below:
6Co2 + 12 H20 yields C6H12O6 + 6O2 + 6H2O
choose one of the following nutrient cycles we discussed in class: the carbon cycle, the phosphorous cycle, or the nitrogen cycle.
either describe how the particular element is cycled in the ecosystem or sketch a diagram of the cycle and describe various parts.
in the book!