Heat goes only from hot to cold. But it has three ways of going. Through things, on the air, and on nothing at all.
I left a metal spoon and wooden chopsticks standing in a bowl of soup
A board to run
Which will get hot first? Run time.
The stove is on, but only the top of the room is warm
A board to adjust
Watch how the air moves.
In which box does ice last longest?
A board to run
Tin, glass, polystyrene, cotton wool. Run twelve hours.
From here we work out the temperature where they meet
What comes next in middle school · heat in everyday life
Where will they meet?
Mix hot water and cold water: what temperature do you get? Heat goes from hot to cold and stops when the two are the same. Where they meet is decided by the amounts.
Mix hot water and cold water: what temperature do you get?
A board to run
Change the amounts, and try cold iron in place of the cold water.
