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Science Benchmark Review
Review questions for Benchmark Test
33
Science
6th Grade
02/26/2008

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Cards

Term
Eycosystem
Definition
All of the communities in an area and the abiotic factors that affect them.
Term
Biome
Definition
A large region with plants and animals well adapted to the soil and climate of the region.
Term
Biosphere
Definition
The level of biological organization that is made up of all the ecosystems on Earth.
Term
Organism
Definition
One individual from a population.
Term
Population
Definition
All of the individuals of one species that live in the same area at the same time.
Term
Community
Definition
The populations of different species that interact in some way.
Term
Selective Breeding
Definition

Breeding animals that produce a desired trait.

(Examples: Dogs, cats, horses, cows)

Term
Comet
Definition

A large body of ice and rock that travels around the sun in an elliptical pattern. 

Has three parts: nucleus, coma, tail

Term
Meteorites
Definition
Any fragments from space that survive their plunge through the atmosphere and land on Earth's surface.
Term
Hereditary
Definition
Passing on traits from parents to offspring.
Term
Trait
Definition
Physical characteristic of an organism. (Examples: nose shape, eye color, hair color, skin color)
Term
System
Definition

Collection of structures, cycles and processes that relate to and interact with each other.  

All must work together.

Term
States of Matter
Definition
Solid, Liquid, Gas, Plasma
Term
Matter
Definition
Anything that has mass and takes up space.
Term
Gene
Definition
Carries information about a trait.
Term
Thermal Energy
Definition
Energy that all objects have.
Term
Chemical Energy
Definition
The energy stored in chemical bonds.
Term
Light Energy
Definition
When light strikes something, it can be absorbed, transmitted or reflected.
Term
Electrical Energy
Definition
Energy carried by electric current that comes out of batteries and wall sockets, is generated at large power plants, and is readily transformed into other forms of energy.
Term
Nuclear Energy
Definition
Energy stored in atomic nuclei that can be transformed into other forms of energy by complex power plants.
Term
Solar Energy
Definition
Energy from the sun.
Term
Mechanical Energy
Definition
Energy of movement.
Term
Space Shuttle
Definition
The world's 1st reusable spacecraft.
Term
International Space Station
Definition

A research facility currently being assembled in space that will be shared by 16 nations.  It gets its electricity from its solar panels.

Term
Compost Pile
Definition
Organic garbage such as weeds, leaves, egg shells, fruit and vegetable leftovers to eventually turns into a moist, dark nutritious material.  The decomposition process generates heat and releases important nutrients in the process.
Term
Meteor
Definition
Fragments of asteroids that enter the atmosphere of the earth.  Friction with the air causes them to burn.  Also called shooting stars.
Term
Stream
Definition
A body of water with a detectable current, confined within a bed and banks.
Term
Asteroid
Definition
Small pieces of rock and metal that come from the Asteroid Belt between Mars and Jupiter.
Term
Hurricane
Definition
A tropical storm with winds that have reached a constant speed of 74 miles per hour or more. This forms in the tropics where the water and air are warm and moist.
Term
Cell
Definition
Basic unit of life.
Term

Watershed

Definition
The area of land where all of the water drains to the same place – this includes water that flows on the surface and water located underground.
Term
Tributary
Definition
A stream or river which flows into another river (a parent river) or body of water but which may not flow directly into the sea.
Term
Groundwater
Definition
Water beneath the earth’s surface between saturated soil and rock that supplies wells and springs.
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