Heat Flashcards
1
Q
If an object is hotter than its surroundings:
A
It radiates heat (even an ice cube)
2
Q
What colour and shinyness radiates best:
A
Matte black
3
Q
Why aren’t radiators black:
A
Because they’d get too hot - in a circuit, almost all the heat would be lost at the first radiator
4
Q
Everything colder than its surroundings:
A
Absorbs heat (even a hot coal)
5
Q
Everything at the same temperature as its surroundings:
A
Absorbs and radiates at the same rate
6
Q
Many computers are black because:
A
Then they cool faster so they don’t overheat (this goes for other devices too)
7
Q
What are two experiments used to measure the effect of colour on heat loss and gain:
A
Coloured beakers and Leslie cubes
