How to wrap up the problem of keeping warm at home

---

Time for an experiment!

Let’s see what happens to the warm air we create in our homes. 

Warm air (heat) always wants to move from a warm place to a colder place.

Touch a table or hard surface. Think: does the surface feel hotter or colder than your hand?

Now keep your hand still on the surface for 1 minute.

After 1 minute, lift your hand and move it quickly over the spot where it has just been.

How does the desk feel where you’ve had your hand?

That’s the heat from your hand moving to warm up the colder desk!

So what does this mean when we are trying to heat our homes?