Task: Question Understanding
Input (English): Question: A student is studying the conduction of heat through different materials. He places each of three identically-sized blocks of rubber, copper, and wood on three different hot plates. On top of each block, he places a 2-gram piece of ice and then turns each hot plate on to warm. Based on the given scenario, what variable would the student measure to determine which material is the best conductor of heat? (A) Density of each material (B) Temperature of each material when the ice begins to melt (C) Time required for the ice to completely melt (D) Temperature of each hot plate?
Output (English): conduction, heat, materials., identically-sized, blocks, wood, hot, plates., top, piece, ice, hot, plate, variable, measure, determine, material, conductor, of