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Physics > P2 > Flashcards

P2 Flashcards

1
Q

Specific heat capacity definition

A

Energy needed to raise the temperature of a 1 kg substance by 1 degrees Celsius

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2
Q

Specific heat capacity equation

A

Change in thermal energy = Mass (kg) X specific heat capacity (J/Kg) X change in temperature (degrees Celsius)

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3
Q

Ways to insulate a building

A

Loft insulation
Double glazed windows
Thicker bricks 

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4
Q

What happens to the Infrared radiation When temperature increases? 

A

Hotter = more infrared radiation

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5
Q

Is infrared radiation visible

A

No

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6
Q

How to test for infrared radiation

A

Beam of light with prism and thermometer

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7
Q

What do greenhouse gases do to infrared radiation

A

Absorb longer wavelengths of infrared radiation from the Earth preventing it from escaping/ Re-emitting radiation to the ground resulting in eart heating

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8
Q

When an object emits infrared radiation at the same rate it absorbs it its temperature is…

A

Constant

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9
Q

When an object absorbs radiation faster than it admits radiation the temperature …

A

Increases

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Physics (7 decks)

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