Mini-Quiz: Heat Transfer with Hot Coffee

1. How does the paper cup get heated by the hot coffee?

   They usually put the cup in an oven to heat it up before serving the coffeeSorry, not correct. Try another button. The hot liquid in contact with the cup heats it by conductionThat is correct. You know about heat transfer. Paper reacts with coffee causing it to heat and sometimes even start on fireGood try, but not right. Select another answer.

2. Does heat get transferred through the cardboard holder?

   Some heat is transferred but usually not enough to burn your fingersCorrect. You are doing great! No heat gets through and the holder even feels somewhat coolOops! Wrong answer. Re-read the question and try again. All of the heat is transferred, but you do not notice it once you start drinking the coffeeSorry, not correct. Try another button.

3. Why does the lid have a hole in it?

   So you can peek inside the cup to see if there is any more coffee leftOops! Wrong answer. Re-read the question and try again. So that the cup doesn't explode from all the pressure insideGood try, but not right. Select another answer. To allow you to drink the coffee in situations where you might spill itThat is correct. You know about heat transfer.

Pick an answer to see instant feedback. Re-read the lesson if you miss one.