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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!

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