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IGCSE STUDYING > physics chapter 9-11 > Flashcards

physics chapter 9-11 Flashcards

1
Q

kinetic paricle model of matter

A

a model in wich matter consists of moving particles

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2
Q

absolute zero

A

the temperature at wich particles have no kinetic energy

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3
Q

Brownian motion

A

the motion of small particles suspended in a liquid or gas, caused by molecular bombardment.

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4
Q

temprature

A

the avarge energy of particles in a substance

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5
Q

what is preussure to volume

A

inversely proportional

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6
Q

thermal expansion

A

the increase in volume of a material when its temperature rises

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7
Q

what 2 things are bad conductors of thermal energy

A

air and water

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8
Q

convection

A

the transfer of thermal energy through a material by the movement of the material itself

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9
Q

what is the main difference between convection and conduction

A

convection energy transferred from hot to cold through the movement of the material
in conduction energy transfered from hot to cold without the material moving

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10
Q

what is density

A

the ratio of mass to volume in a substance

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11
Q

whats diffrent about radiotion compared to the other types of energy tansfer

A

it doesnt need moving particles( can move through a vacum)

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12
Q

what is infrared radition produced by

A

hot or warm objects

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13
Q

what color abosrbed infared the best

A

black

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14
Q

what color reflects infared the best

A

white

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15
Q

low heat capacity

A

heats up faster

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16
Q

high heat capacity

A

heats up slower

17
Q

what is the equation for specific heat capacity

A

ENERGY =
MASS (X)
SPECIFIC HEAT CAPACITY (X) TEMPERATURE CHANGE

18
Q

what is the defition of specific heat capacity

A

THE ENERGY NEEDED TO RAISE THE TEMPERATURE OF 1KG OF THE SUBSTANCE BY 1°C.

19
Q

equation 1 multiplication to find pressure (liquid)

A

density of liquid times gravity times height

20
Q

equation 2 division to find pressure

A

Force
area

21
Q

equation for thermal heat capacity

A

mass times specific heat capacity

IGCSE STUDYING (27 decks)

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