Question 1:
What is the benefit of wearing bright coloured clothing in hot weather?
Answer:
Bright colours are poor heat absorbers, therefore we feel cooler.
What is the benefit of wearing bright coloured clothing in hot weather?
Answer:
Bright colours are poor heat absorbers, therefore we feel cooler.
Question 2:
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?
Answer:
The shiny inner surface enables heat from the hot water to be reflected again inside and the temperature of the hot water is maintained.
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?
Answer:
The shiny inner surface enables heat from the hot water to be reflected again inside and the temperature of the hot water is maintained.
Question 3:
State two good heat absorbers and radiators that can be used in our daily life.
Answer:
Heat absorber: The cooling agent of the car engine and ice pack
Heat radiator: Candles and pots
(Any other answers are accepted)
State two good heat absorbers and radiators that can be used in our daily life.
Answer:
Heat absorber: The cooling agent of the car engine and ice pack
Heat radiator: Candles and pots
(Any other answers are accepted)