P.S. 7

Master heat transfer & phase changes! Science worksheet on conduction, convection, radiation, and temperature scales.

Jennifer left her popsicle sitting on a plate to watch it melt. How is thermal energy moving in this scenario? cold to hot hot to cold hot to hot cooler to warmer The measurement of how fast the molecules in an object moves is known as- movement energy temperature volume Which of these objects is a conductor of heat? wool copper glass cloth Which sentence explains why a cold metal spoon placed in a pot of boiling water becomes hot? Thermal energy is transferred from the spoon to the water. Thermal energy is transferred from the water to the spoon. The spoon falls in the water. Cold can never move into something, it is _ flowing out that makes us feel cold. cool air heat atoms moisture If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL _. one reaches a temperature of 0° C. they reach an equal temperature. one runs out of energy. one is absorbed into the o Hot water is added to a bathtub containing cold water. After a few minutes, what will happen to the water in the tub? the hot water will float on the top the hot water will begin warming the colder water the cold water will float on top of the hot water the cold water will get colder and the hot water will get hotter Which of the following is TRUE of the diagram shown above? it shows the pattern that heat flows most of the time it shows the pattern that heat flows some of the time it shows the pattern that heat flows all of the time none of these are correct Heat Transfer Determine if each example is radiation, convection, or conduction. food cooking in a pan conduction roasting marshmallows radiation sun tan radiation weather convection upstairs is warmer than downstairs convection burning your hand on an iron conduction Phase Changes Match each word to the correct description. evaporation liquid to gas condensation gas to liquid freezing liquid to solid sublimation solid to gas melting solid to liquid changes during a phase change heat energy changes between phase changes temperature Label the Phase Change Diagram solid melting freezing liquid evaporation condensation gas Determine which temperature scale is used for each example. Celsius freezing is at zero boiling is at 100 used in Science and is part of the SI scale -273 is absolute zero considered more accurate Fahrenheit freezing is at 32 boiling is at 212 used only in the U.S. considered less accurate