Heat is unable to easily pass through thermal insulators, as they have low thermal conductivity, which helps to maintain a constant temperature on the opposite side of the insulator.
When thermal energy is applied to ice, the ice’s temperature rises until 0° C and then stays the same for a period of time. In 1–2 sentences, explain why this takes place.
This is because the heat energy is used to break the hydrogen bonds within the ice, causing the phase change from solid to liquid, instead of increasing the temperature.
A pot of water is being heated on the stovetop. The water molecules closest to the burner rise in the pot when they gain thermal energy. In 1–2 sentences, explain why the water rises.
When water is heated, it becomes less dense as the molecules gain thermal energy and move faster, causing them to spread apart and rise to the top of the pot.
A baker uses oven mitts to open an oven, take a loaf of bread out, and place it on a plate. In 3–4 sentences, identify three examples of thermal energy transfer in the scenario.
Three examples of thermal energy transfer in the scenario are: 1) The transfer of thermal energy from the hot oven to the oven mitts when the baker opens the oven. 2) The transfer of thermal energy from the oven mitts to the baker's hands as they hold the loaf of bread. 3) The transfer of thermal energy from the hot loaf of bread to the plate as it is placed on it.
