Kate gathered 3 boxes of the same size of different materials: glass, clear plastic, and aluminum painted black. She placed them on a window sill in the sun for 1 hour and
then measured the warmth of the air in each box.
In this experiment, what is the time of 1 hour

controlled variable
Independent variable
dependent variable

What type of energy conversion occurs when you place your feet near the fire place and they become warm

How many grams are in one mole of lead?

Which of these describes how heat is transferred by convection* a. sunlight travels through space without the aid of fluids or solids. b. warm air rises and takes the heat with it, eventually, it cools and sinks c. air at the equator rises and sinks at the poles. d. air molecules touch the warm ground, heating them up *not conduction