Heat transfers and formulas

Question 1

What is the equation for specific heat capacity?

Answer 1

ΔE = m x c x Δθ

Question 2

How do you transfer heat through solids?

Answer 2

Conduction

Question 3

How do you transfer heat through liquids and gases (fluids)?

Answer 3

Convection

Question 4

How do you transfer heat through empty space?

Answer 4

Radiation

Question 5

How does an object’s colour or finish affect radiation?

Answer 5

Light and shiny surfaces will reflect radiation whereas dark and matte surfaces will absorb radiation.

Question 6

What is meant by ‘specific heat capacity’?

Answer 6

It is the amount of energy needed to raise the temperature of a 1kg substance by 1°C.

Question 7

Rearrange the specific heat capacity formula to make mass the product.

Answer 7

m = ΔE ÷ (c x Δθ)

Question 8

Find the formula for the starting temperature using the specific heat capacity if you didn’t know what the change in temperature was.

Answer 8

Δθ = ΔE ÷ (m x c)
End temperature – Δθ