P 1.5 Factors that affect the rate at which that energy is transferred Flashcards
(10 cards)
What is energy transfer?
The movement of energy from one place or object to another.
What factors affect the rate of energy transfer by heating?
Surface area, temperature difference, thermal conductivity, and thickness of material.
How does surface area affect energy transfer?
Larger surface areas increase the rate of energy transfer.
How does temperature difference affect energy transfer?
A bigger temperature difference increases the rate of energy transfer.
How does thermal conductivity affect energy transfer?
Higher thermal conductivity increases the rate of energy transfer through a material.
How does material thickness affect energy transfer?
Thicker materials reduce the rate of energy transfer.
What is the role of insulation in energy transfer?
Insulation reduces the rate of energy transfer by using materials with low thermal conductivity.
Why do metals transfer heat faster than wood or plastic?
Because metals have higher thermal conductivity.
How does energy transfer differ between dark, matte and shiny, light surfaces?
Dark, matte surfaces absorb and emit heat more quickly; shiny, light surfaces reflect heat.
Why does increasing the surface area of a hot object cool it faster?
Because more energy can be transferred per second from a larger surface.
