HEAT ABSORPTION AND EMISSION

Oil tanks are painted with shiny aluminium paint because...

• Aluminium paint is a poor heat absorber but a good heat reflector

• Aluminium paint is a good heat absorber but a poor heat reflector

The silver surface of the teapot retains heat longer. This is because

• The silver is a weak heat radiator

• The silver is a good heat radiator

Walls of a house are painted with bright colours because

• Bright surface are a good heat absorber

• Bright surface are a poor heat absorber

Why is avoiding black coloured shirt during activities under the hot Sun a good idea?

• Black are weak heat absorber

• Black are good heat absorber

What is the feature of the wall of a thermos flask that allows it to maintain the temperature of hot water for a long time?

• The outer walls are usually painted with black colours to avoid heat emission from the inside

• The inner walls are usually made out of shiny material such as aluminium to avoid heat loss

• The inner walls are usually made out of dark and dull material to avoid heat loss

• The outer walls are usually painted with black colours to absorb heat

Which can is a better heat absorber and radiator

• The dark can

• The white can

Which car absorbs more heat if place under the Sun?

• The car on the right

• The car on the left

If we filled both glass with hot coffee, which cup of coffee will probably cools down faster, given thay both cup made up of the same material?

• The black cup

• The white cup

Which surface is a better heat absorber and radiator

• Dark, dull surface

• White, shiny surface

Which surface is a better heat reflector?

• Dark, dull surface

• White, shiny surface