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Chapter 4 Test Flashcards 11/29/12
flashcards vocabulary
39
Science
7th Grade
11/28/2012

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Term
Matter
Definition
has stuff (mass) and takes up space (volume
Term
Mass
Definition
the amount of stuff in an object
Term
Volume
Definition
takes up space
Term
Matter
Definition
has stuff (mass) and takes up space (volume
Term
Volume
Definition
takes up space
Term
Density/denisty problems
Definition
mass divided by volume
Term
Energy
Definition
the ability to do work or cause change
Term
Kinetic Energy
Definition
energy of motion; depends on mass and velocity
Term
Kinetic Theory of Matter
Definition
all matter moves
Term
Temperature
Definition
is the average kinetic energy of all the particles in an object
Term
Degrees
Definition
equally spaced units between two points
Term
Celcius/ Fahrenheit math problems
Definition
Celcius: freezing point-0 degrees boiling point-100 degrees

Fahrenheit: freezing point-32 degrees boiling point- 212 degrees
Term
Phases of Matter
Definition

Solid--> Liquid- melting

Liquid--> Solid-freeze

Solid--> Gas- sublimation

Gas--> Solid- deposition (frost)

Gas--> Liquid- condensation

Liquid-->Gas- vaporization (2 types: evaporation/boiling)



Term
Solid
Definition
vibrates; held tightly together
Term
Liquid
Definition
slide past eachother; move freely
Term
Gas
Definition
move at high speeds; move freely
Term
Thermal Expansion
Definition
makes liquid filled thermometers work; works in solids; solid expands as particle movement increases, kinetic energy increases, volume increases, mass stays same
Term
Heat
Definition
is the flow of energy from an object at a higher temperature to an object at a lower temperature
Term
Thermal Energy
Definition
is the total rendom kinetic energy of particles in an object
Term
Calorie
Definition
the amount of energy needed to raise the temperature of 1 gram of water by 1 degree celcius
Term
Joule
Definition
is the standard scientific unit in which energy is measured; 1 calorie=4.18 joules
Term
Specific Heat
Definition
the amount of energy required to raise the temperature of 1 gram of a substance by 1 degree celcius in a substance
Term
Conductors
Definition
are materials that transfer energy easily; good conductor is metal
Term
Insulators
Definition
don't transfer heat easily; poor conductorss; often have high specific heat
Term
Convection
Definition
is the process that transfers energy by the movement of large numbers of particles in the same direction within a liquid or gas
Term
Radiation
Definition
is energy that travels as electromagnets waves (EMR) which include visible light, microwaves, and infrared light; example is marshmallow
Term
Lake Effect Snow
Definition
lake hot; cool winds collids with hot air makes snow
Term
is the process that transfers energy by the movement of large numbers of particles in the same direction within a liquid or gas
Definition
is the standard scientific unit in which energy is measured; 1 calorie=4.18 joules
Term
is the process that transfers energy by the movement of large numbers of particles in the same direction within a liquid or gas
Definition
is the standard scientific unit in which energy is measured; 1 calorie=4.18 joules
Term
are materials that transfer energy easily; good conductor is metal
Definition
all matter moves
Term
equally spaced units between two points
Definition
the ability to do work or cause change
Term
makes liquid filled thermometers work; works in solids; solid expands as particle movement increases, kinetic energy increases, volume increases, mass stays same
Definition
is the total rendom kinetic energy of particles in an object
Term
lake hot; cool winds collids with hot air makes snow
Definition
slide past eachother; move freely
Term
takes up space
Definition
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