Thermal Processes

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21 Terms

1

heat detector

A(n) ________ is placed at a constant distance away from the cube i.e.

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2

→it

________ does not need a medium for transmission.

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3

Infra red radiation

________ can travel across vacuum.

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4

absence of free electrons

The ________ mean that molecules can not easily pass on kinetic energy to their neighbors, so heat can only be transmitted through particle vibrations and collisions.

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5

Liquids

________ and non- metals are poor conductors of heat.

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6

thermometer

A(n) ________ is placed on each plate and initial reads of the ________ are recorded.

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7

Insulators

________: Materials that are very poor conductors.

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8

presence of free electrons

The ________ is the main reason why metals are great conductors.

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9

metal cube

A(n) ________ with is painted with 4 different types of surfaces: matt black, shiny black, white and silver.

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10

radiant heater

A(n) ________ is placed in the middle of two plates at equal distance away from the heater.

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11

plates

The heater is switched on and the temperatures of each of the ________ are measured in equal intervals.

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12

Ions

________ are close together, so vibrations are passed onto neighboring ________ which in turn, begin to vibrate quicker too.

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13

Matt black

________ is the best absorber and emitter of radiation.

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14

metallic structure

The ________ is composed of a lattice of metal ions, and a sea of ‘ free electrons that move throughout the structure.

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15

Infra red radiation

________ can be emitted, absorbed, or reflected.

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16

absence of free electrons

The ________ is the reason why materials are poor conductors.

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17

Infra red radiation

________ is a part of the electromagnetic spectrum, and is emitted by any hot object.

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18

Conduction

The process by which heat or electricity is directly transmitted through the material of a substance

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19

Insulators

Materials that are very poor conductors

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20

Convection

Heat transfer through liquids and gases (fluids)

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21

A metal cube with is painted with 4 different types of surfaces

matt black, shiny black, white and silver

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