Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
53 Cards in this Set
- Front
- Back
|
Physical Properties
|
properties of matter that can be observed or measured without changing the identity of the matter
|
|
|
Chemical Properties
|
properties of matter that describe substances based on their ability to change into new substances
|
|
|
Physical Changes
|
changes that do not change the physical properties of matter
|
|
|
Chemical Changes
|
changes that change the chemical properties of matter
|
|
|
Irreversible Changes
|
Changes that cannot be reversed
|
|
|
Reversible Changes
|
changes that can be reversed
|
|
|
Joule
|
Unit used to express work and energy.
|
|
|
Watt
|
unit used to express power
|
|
|
Lever
|
simple machine consisting of a bar that pivots at a fixed point, called a falcrum
|
|
|
Inclined Plane
|
Simple machine that is a straight, slanted surface
|
|
|
Wedge
|
Double inclined plane that moves
|
|
|
Screw
|
inclined plane wrapped around a cylinder
|
|
|
Pulley
|
simple machine consisting of a grooved wheel that holds a rope or cable
|
|
|
Wheel and axle
|
simple machine consisting of 2 circular objects of different sizes
|
|
|
Work
|
the action that results when a force causes an object to move in the direction of the force
Work= Force X Distance |
|
|
Power
|
the rate at which work is done
Power= Work/Time |
|
|
ecological succession
|
the orderly changes an ecosystem goes through as it develops or regrows
|
|
|
Machine
|
a device that helps make work easier by changing the size or direction(or both) of a force
|
|
|
energy
|
the ability to do work
|
|
|
Gravity
|
the force that pulls everyone and thing down
|
|
|
Force
|
a push or pull
|
|
|
solar system
|
the system composed of the sun(a star) and the planets and other bodies that travel around the sun
|
|
|
nebula
|
a large cloud of gas and dust in interstellar space
|
|
|
Solar nebula
|
the cloud of gas and dust that formed our solar system
|
|
|
orbit
|
the elliptical path a body follows as it travels around another body in space
|
|
|
biodiversity
|
the variety of organisms on Earth
|
|
|
biome
|
a large region characterized by a specific type of climate and the plants and animals that live there
|
|
|
Ecosystem
|
a community and its abiotic environment
|
|
|
biosphere
|
the whole area on Earth where life exists
|
|
|
biotic
|
the living factors of an environment
|
|
|
abiotic
|
the nonliving factors of an environment
|
|
|
motion
|
scientific term for "movement"
|
|
|
population
|
a group of the same species living in the same place at the same time
|
|
|
pioneer species
|
the first organisms to colonize a new site
Ex. Lichens being the first to colonize lava rocks |
|
|
Climax Community
|
a stable, mature community that undergoes little or no succession
|
|
|
climate
|
the average weather conditions in an area over a long period of time
|
|
|
weather
|
the condition of the atmosphere at a particular time and place
|
|
|
trophic levels
|
the position an organism occupies on the food chain.
Ex. primary producer, primary comsumer, etc. |
|
|
"secret service"
|
a job performed by an organism to help sustain an environment
|
|
|
energy pyramids
|
graphical models of energy flow in communities
|
|
|
food chain
|
community of organisms where each member is eaten in turn by another member
|
|
|
food web
|
community of organisms where there are several unrelated food chains(network of food chains)
|
|
|
Keystone Species
|
organism that plays a critical role in maintaining the structure of an ecolological community
|
|
|
invasive species
|
ones who mess things up of the native species, and fight with them
|
|
|
habitat
|
the place where an organism lives
|
|
|
microhabitat
|
small, specific region within a habitat
|
|
|
watershed
|
body of water that drains into a body of water
|
|
|
weathering
|
the breakdown of rock into smaller and smaller pieces by mechanical and chemical means
|
|
|
erosion
|
the process by which wind a water move soil and sediment from one place to another
|
|
|
Natural Disaster/hazard
|
any terrible event, not caused by human activity, that results in either major or minor consequences
|
|
|
turgor pressure
|
when fluid collects inside of a plant cell and pushes against the cell wall
|
|
|
Seedling emergence
|
a seed breaking through the surface to grow up
|
|
|
Geotropism
|
when a plant grows downwards; also called "gravitropism"
|
