Science Final

Front 1

Acceleration

Back 1

The rate of change in speed or velocity

Front 2

Albedo

Back 2

A measurement of the percentage of light that an object reflects

Front 3

Atmosphere

Back 3

A blanket of air and moisture that surrounds the earth

Front 4

Average velocity

Back 4

The result displacement divided by the total time from start to finish

Front 5

Biodiversity

Back 5

The number of species in an ecosystem, and the variety within those species

Front 6

Biotic

Back 6

A factor in an ecosystem created by the presence and roles off other living things

Front 7

Biotic potential

Back 7

The maximum number of offspring that a species could produce, if resources were unlimited

Front 8

Bohr diagram

Back 8

A diagram used to represent the arrangement of electrons for an element; the elector tons are drawn in a series of concentric circles around the nuclear

Front 9

Carbon cycle

Back 9

The cycle in which carbon atoms move

Front 10

Carnivore

Back 10

An animal that feeds off other animals

Front 11

Catalyst

Back 11

A substance that increases the rate of a chemical reaction without being consumed by the reaction

Front 12

Cellular respiration

Back 12

The process by which most living things generate useful energy, by composing sugars and oxygen to produce carbon dioxide and water

Front 13

Chemical change

Back 13

The alteration of a substance into one more different substances with different properties

Front 14

Climate

Back 14

Weather conditions of an area averaged over many years

Front 15

Constant acceleration

Back 15

A rate of change in speed or velocity that does not change during the acceleration

Front 16

Constant speed

Back 16

Travelling the same distance over a successive equal time intervals

Front 17

Constant velocity

Back 17

Motion in which both the direction and speed remain unchanged

Front 18

Consumer

Back 18

A heterotroph; an organism that must eat producers or other consumers survive

Front 19

Covalent bonds

Back 19

A bond formed by two or more nonmetal atoms sharing one or more pairs of electrons

Front 20

Decomposers

Back 20

An organism that feeds on detritus

Front 21

Density dependant factor

Back 21

A factor in an ecosystem that affects population based on the density of the population

Front 22

Density of independent factors

Back 22

A factor that affects population that does not vary according to the density of the population

Front 23

Detritus

Back 23

Waste from plants and animals including dead remains

Front 24

Distance

Back 24

Length of path travelled a scalar quantity

Front 25

Electron

Back 25

A negatively charged particle

Front 26

Element

Back 26

A pure substance that can not be broken down into a simpler substance

Front 27

Food chain

Back 27

A step by step sequence that connect organisms that feed on earth other.

Front 28

Fossil fuel

Back 28

A fuel formed over millions of years as organic materials decay

Front 29

Habitat

Back 29

The conditions required for the survival of a species

Front 30

Heat sink

Back 30

An object or a material that absorbs energy and gets warmer.

Front 31

Herbivore

Back 31

An organism that eats plants.

Front 32

Hydrosphere

Back 32

All earths water. Both fresh and salt. Liquid and ice.

Front 33

Inorganic

Back 33

Compounds that don't contain a combination of carbon and hydrogen atoms.

Front 34

Ionic charge

Back 34

The numerical value of electric charge of an ion.

Front 35

Ionic compound

Back 35

A compound consisting of positive and negative ions.

Front 36

Law of conservation of mass

Back 36

A scientific law that states the total mass of the reactants in a chemical reaction is always equal to the total mass of the products.

Front 37

Lithosphere

Back 37

The soil

Front 38

Neutron

Back 38

A neutral partial found in the nucleus of an atom.

Front 39

Nitrogen cycle

Back 39

Atoms move from nitrogen gas in the atmosphere, to inorganic form in the soil, to inorganic form in the soil, to organic form in living things, and then back to inorganic form in the soil and nitrogen gas in the atmosphere.

Front 40

Nitrogen fixation

Back 40

2 processes in which atmospheric or dissolved nitrogen is converted into nitrogen ions; part of the nitrogen cycle. Both lightning and some bacteria can fix nitrogens.

Front 41

Omnivore

Back 41

An animal that eats both plants and animals.

Front 42

Organic

Back 42

Compound that contain atoms of both carbon and hydrogen.

Front 43

Photosynthesis

Back 43

The process by which green plants and some other organisms use sunlight energy, carbon dioxide, and water to produce carbohydrates

Front 44

Physical change

Back 44

A change in size or form of a substance, which does not change the chemical properties of the substance

Front 45

Polyatomic ion

Back 45

A group of atoms that tend to stay together and carry an overall ionic charge

Front 46

Product

Back 46

A substance produced in a chemical reaction

Front 47

Reactant

Back 47

The starting material in a chemical reaction.

Front 48

Proton

Back 48

A positively charged particle that is found in the nucleus of an atom

Front 49

Producer

Back 49

An autotroph; an organism that uses photosynthesis or another form of chemical synthesis to make food.

Front 50

Significant figure

Back 50

An indication of the certainty of a measurement.

Front 51

Slope of the line

Back 51

On a graph, represents the steepness of the line. The relationship between the 2 variables

Front 52

Uniform motion

Back 52

A constant speed or constant velocity

Front 53

Velocity

Back 53

Speed in a stated direction; displacement divided by time interval; a vector quantity

Front 54

Weather

Back 54

The conditions outside considered from day to day; compare with climate.