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Vocab words
Force+Motion and population growth
| Term | Definition |
|---|---|
| Acceleration | An increase in rate of change. |
| Displacement | The act of moving something from its natural environment. |
| Speed | A rate at which something happens. |
| Mass | The property of a body that causes it to have weight. |
| Inertia | The tendency of something to stay in rest or motion. |
| Average speed | The distance traveled divided by the time elapsed. |
| Momentum | The product of a body's mass and velocity. |
| Velocity | Distance travelled per unit time. |
| Newton's 3 laws | The three physical laws that, together, laid the foundation for classical mechanics and describe the relationship between a body and the forces acting upon it, and its motion in response to those forces. |
| Law 1 | Every object moves in a straight line unless acted upon by a force. |
| Law 2 | The acceleration of an object is directly proportional to the net force exerted and inversely proportional to the object's mass. |
| Law 3 | For every action, there is an equal and opposite reaction. |
| Biosphere | The regions of the Earth where organisms exist. |
| Habitat | The type of environment in which a organism normally lives. |
| immigration | The movement of persons into a place. |
| Emigration | Moving from one place in order to settle in another. |
| Symbiosis | The relations between two interdependent species of organisms. |
| Demographics | A statistic charcticing human population. |
| Limiting factors | Anything that constrains a population's size and slows or stops it from growing |
| Extinction | The state of being no longer in existence. |
| Trophic level | Each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy |
| Birth rate | The ratio of live births in an area to the population of that area; expressed by per 1000 population per year. |
| Death rate | The ratio of deaths in an area to the population of that area; expressed by per 1000 population per year. |
| Life Expectancy | An expected time to live as calculated on the basis of statistical probabilities. |
| Density | The amount per unit size. |
| Carrng capacity | The number of people, other living organisms, or crops that a region can support without environmental degradation. |
Created by:
heeheee
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