7.1-15.2
Terms
undefined, object
copy deck
- S- Curve
- the type of curve that appears in a graph describing a period of exponential growth followed by a period of zero growth, as in a pop. that has reached carrying capacity
- Chemical Family
- A column of elements on the Periodic Table, having similar chemical and physical properties.
- physical model
- a three-dimensional representation of a variable or system, constructed to show physical relationships between components
- Ecology
- A branch of the life sciences that focuses on the interactions among organisms and between organisms and their surroundings.
- Neutrons
- a particle in the nucleus of an atom that carries no charge -- therefore it is neutral. Have almost the same mass as protons, the other particles that make up the atom's nucleus.
- Element
- A substance made of only one kind of atom; cannot be chemically broken down into different, simpler substances
- model
- any representation of a system or its components
- Electrons
- travel around the nucleus of the atom moving so fast that they can't be seen with the naked eye. Aalso carry a negative electrical charge
- Periods
- Horizontal rows that include representative elements and Heavy transition elements
- exponential Growth
- Expansion that increases by a greater amount during each time interval, typically seen in pop. where rescourses are plentiful and space is not a constraint(Y=Xn
- death rate
- the ratio between deaths and individuals in a specific population at a particular time.
- Periodic Table of Elements
- A systematic table used to organize chemical elements based on physical and chemical properties. The organization of the modern Table was developed by Dmitri Mendeleev.
- Population Density
- The total number of organisms inhabiting a giving area at a given time.
- Protons
- The particles inside the nucleus of an atom that carry a positive charge. The number of these in an atom of an element is found in the periodic table of the elements as the atomic number of that element.
- mathematical model
- a quantitative description of the relationship between two or more variables, often expressed as an equasion
- Population dynamics
- the study of changes in birth rate, death rate, and migration that affect the total number of organisms in a given ecosystem.
- Compound
- A pure substance made up of atoms of two or more elements bonded together in definite ratios
- Molecule
- Two or more atoms tightly bonded together to form a neutral particle
- conseptual model
- a diagram or other pictoral representation of the components of a system that enables obsercation and clarifiation of the relationships among those components
- J- Curve
- type of curve in a graph showing exponential growth
- birth rate
- the ratio between births and individuals in a specific population at a particular time. Typically reported as the number of births per 1,000 individuals per year
- Chemical Bond
- the attractive force that holds atoms together.
- Nucleus
- The center part of an atom. It is made up of positively charged protons and neutral neutrons. The nucleus is the most dense and heavy part of the atom.
- Sustainable Development
- The achievement of industrial and economic growth in ways that do not cause environmental degradation; development that results in increased standard of living and quality of life in the present without decreasing the ability of future generations to attain an equal or greater standard of living and quality of life.
- linear Growth
- Expansion that increases by the same amount during each time interval (y=mx+b)
- computer model
- a computer-generated representation of a system that enables maipilation of variables and observation of the consequenses of changing those variables; a form of mathematical model
- Carrying Capacity
- the maximum population an ecosystem can support without deteriorating.