Peltier Plate: One Side Hot, One Cold

One side cools while the other warms. Ask students to predict what will happen. Power module briefly and compare both sides. Key idea: Electric current transports heat across junctions in the semiconductor device. Ask: Where is the heat going? Safety and cleanup: Teacher-only; always use heat sink; prevent condensation on electronics. https://www.google.com/search?q=%22Peltier+Plate%3A+One+Side+Hot%2C+One+Cold%22+science+demonstration+experiment