Scientific Method
The act of noticing and describing events of processes in a careful, orderly way.
What is an observation?
The attraction between a hydrogen atom with a partial positive change and another atom with a partial negative change.
What is a hydrogen bond?
Consists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere.
What is the Biosphere?
The nutrient whose supply limits productivity is called the ...
Limiting nutrient/ factor
The statement "The worm is 2 centimeters long" is a(n):
observation, theory, inference, or hypothesis
What is an observation?
A scientific explanation for a set of observations that can be tested in ways that support or reject it.
What is a hypothesis?
The attrction between molecules of the same substance.
Any nonliving part of the environment, such as sunlight, heat, precipitation, humidity, wind or water currents, soil type, and so on.
What are abiotic factors?
Elements pass from one organism to another and among parts of the biosphere through closed loops.
What are biogeochemical cycles?
A series of steps in which organisms transfer energy by eating and being eaten- one possible route
What is the food chain?
The variable that is deliberately changed within a controlled experiment.
What is the independent variable?
The attraction between molecules of different substances?
What is adhesion?
Algae, certain bacteria, and plants can capture energy from sunlight or chemicals and convert it into forms that living cells can use. These organisms are called ...
Autotrophs
The total amount of living tissue within a given trophic level.
What is biomass?
Living things maintain a stable internal enviornment.
What is homeostasis?
A group exposed to the same conditions as the experimental group except for one independent variable.
What is the control group?
In a saltwter solution, table salt is the ______ - the substance that is dissolve.
What is the solute?
Organisms like the giant earthworm feed on detritus particles, often chewing or griding them into even smaller pieces. These consumers are called ...
Detritivores
Each step in a food chain or food web is called a ...
Trophic level
In aquatic food chains, primary producers are a mixture of floating algae and a diverse group of small, swimming animals called...
A well-tested explanation that unifies a broad range of observations and hypotheses and that enables scientists to make accurate predictions about new situations.
What is a scientific theory?
A measurment system devised by chemists to indicate the concentration of H+ ions in solution.
What is the pH scale?
These show the relative amount of energy or matter contained within each trophic level of a given food chain or food web.
What are ecological pyramids?
The solar energy catured and stored in the leaves of grasses ends up stored in the tissues of cows and ultimately only _____% of the origional amount of energy gets stored in the tissues of humans who eat cows.
1%
100%(primary producer) -> 10% first level consumer --> 1% second level consumer
A particular preference or point of view that is personal, rather than scientific.
What is bias?