Q: What is it called when plants release water vapor through their leaves? Read this paragraph and choose the correct option from the provided answers: Transpiration is like evaporation because it changes liquid water to water vapor. In transpiration, plants release water vapor through their leaves. This water vapor rises into the atmosphere. Choices: - propagation - evaporation - respiration - transpiration A:
transpiration

Q: What process converts the sun's hydrogen nuclei into helium? Read this paragraph and choose the correct option from the provided answers: Figure 32.19 Nuclear fusion in the Sun converts hydrogen nuclei into helium; fusion occurs primarily at the boundary of the helium core, where temperature is highest and sufficient hydrogen remains. Energy released diffuses slowly to the surface, with the exception of neutrinos, which escape immediately. Energy production remains stable because of negative feedback effects. Choices: - solar fission - nuclear fission - combustion - nuclear fusion A:
nuclear fusion

Q: The direct conversion of a solid to a gas, without an intervening liquid phase, is called what? Read this paragraph and choose the correct option from the provided answers: The direct conversion of a solid to a gas, without an intervening liquid phase, is calledsublimation. The amount of energy required to sublime 1 mol of a pure solid is theenthalpy of sublimation (Hsub). Common substances that sublime at standard temperature and pressure (STP; 0C, 1 atm) include CO2 (dry ice); iodine (Figure 11.18 "The Sublimation of Solid Iodine"); naphthalene, a substance used to protect woolen clothing against moths; and 1,4-dichlorobenzene. As shown in Figure 11.17 "The Three Phases of Matter and the Processes That Interconvert Them When the Temperature Is Changed", the enthalpy of sublimation of a substance is the sum of its enthalpies of fusion and vaporization provided all values are at the same T; this is an application of Hess's law. (For more information about Hess's law, see Chapter 5 "Energy Changes in Chemical Reactions", Section 5.2 "Enthalpy"). Equation 11.3. Choices: - amplification - isolation - insertion - sublimation A:
sublimation