science test

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what is true about the Celsius scale

0 degrees is the freezing point of water

most gasoline engines are ____ stroke engines

4

the addition or loss of thermal energy changes the arrangement of the particles during

a change of state

a refrigerator requires

a refrigerant

a device that uses an outside energy source to transfer thermal energy from a cool area to a warm area is

a refrigerator

one common application of thermal expansion is

a thermometer

no more energy can be removed from matter at

absolute zero

boiling is vaporization that takes place at or _____ the surface of a liquid

below

heat is transferred from one particle of matter to another without the movement of matter itself is a process called

conduction

the handle on a spoon in a bowl of soup becomes warm due to heat transfer by the process of _____

conduction

bare feet feel colder on a tile floor than on a rug because the tile floor is a better ____ of heat

conductor

heated air moves from baseboard heaters to the rest of the room in the process called

convection

a thermometer uses the fact that liquids such as mercury and alcohol ____ when heated

eexpand

vaporization that only takes place only at the surface of a liquid is called

evaporation

the bimetallic strip in a thermostat bends as it is heated because the two metals in the strip ____ at different rates

expand

a steam engine is an example of a

external combustion engine

water freezes at 32 degrees on which scale

fahrenheit

true or false during the power stroke of a four stroke engine the fuel mixture is squeezed into a smaller volume

false; compression

true or false as most substances are cooled, they expand

false; contract

true or false; during conduction heat is transferred by the movement of currents within a fluid

false; convection

true or false a student lists 3 temperatures 100d f 100d c and 100 k the highest is 100k

false; highest is 100c

true or false; trapped air is a good conductor because it reduces within a fluid.

false; insulator

true or false particles of matter in the solid state are held together but can move around eachother

false; liquid

true or false a material gains thermal thermal energy as it freezes

false; loses

true or false heat is is kinetic energy moving from a warmer object to a cooler object

false; thermal energy

the most unorginized state of matter is the _____ state

gaseous

what is true of gases

gases expand to fill all the space available

if ____ is transferred from object A to object B the thermal energy of object A decreases

heat

the movement of thermal energy from a warmer object to a cooler object is

heat

the conversion of thermal energy into mechanical energy requires a

heat engine

a material that does NOT conduct heat well is

insulator

fiberglass is a common ____ which is a material the transfer of heat

insulator

the SI unit of heat is the

joule

heat, like work is an energy transfer measured in

joules

a one-degree change in temp on the celcius temp scale is equal to a one degree temp change on the ____ temp scale

kelvin

absolute zero is shown at 0 on which scale

kelvin

an increase in the total energy of the particles of a substance results in an increase in the ____ energy of the substance

kinetic

a refrigerator uses ____ energy to transfer thermmal energy from a cool area to a warm area

mechanical

heat transfer occurs

only from warm objects to cooler ones

stars transfer thermal energy by the process of____

radiation

the transfer of energy by electromagnetic waves is called

radiation

iron has a higher specific heat than silver. if 1 kg of silver absorb equal amounts of heat, the temp of the ____ will increase by a greater amount

silver

what is a good conductor

silver

the amount of energy required to raise the temperature of 1 kilorgram of a substance by one kelvin is called its

specific heat

the joule per kilogram kelvin is the SI unit for

specific heat

in an internal combustion engine each up or down movement by a piston is called

stroke

any temp on the kelvin scale can be changed to celcius by

subtracting 273 from it

as a substance changes state, there is no change in the _____ of the substance

temperature

the temperature at which a solid changes into a liquid is called

the melting point

the more particles a substance has at a given temperature

the more thermal energy it has

during a change of state the addition or loss of ___ energy changes the arrangement of the particles in the substance

thermal

if two classes of water are at the same temp the average _______ energy of the particles of water in each glass is the same

thermal

a measure of the average kinetic energy of the individual particles in an object is

thermal energy

even tho the water in a filled bathtub may be as the same temp as water in a tea cup, the water in the bathtubb has more _____ because it contains a greater number of water molecules.

thermal energy

the total energy of all the particles in a substance is called

thermal energy

the expanding of matter when it is heated is known as

thermal expansion

how many forms, states does matter on earth exist in

three

a change in the thermal energy of an object is related to the objects specific heat, temperature change and mass

true

true or false the more particles a substance has at a given temperature the more thermal energy it has

true

substance with highest specific heat

water


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