Answer the following question given this paragraph: Evaporation occurs when water on the surface changes to water vapor. The sun heats the water and gives water molecules enough energy to escape into the atmosphere. Q: What occurs when water on the surface changes to water vapor? Choices: - oxidation - photosynthesis - condensation - evaporation A:
evaporation
(Question)
Answer the following question given this paragraph: When an earthquake will occur is much more difficult to predict. Stress on a fault builds up at the same rate over time. So earthquakes should occur at regular intervals. But, so far, scientists cannot predict when quakes will occur even to within a few years. Around Parkfield, California, an earthquake of magnitude 6.0 or higher occurs about every 22 years. So seismologists predicted that one would strike in 1993. But that quake came in 200411 years late ( Figure below ). Q: Stress building up at the same rate over time at a fault causes what phenomenon? Choices: - erosion - volcanoes - storms - earthquakes A:
(Answer)
earthquakes
Ques: Answer the following question given this paragraph: Distillation is an effective method to separate mixtures comprised of two or more pure liquids. Distillation is a purification process in which the components of a liquid mixture are vaporized (transformed from liquid to gas) and then condensed (transformed from gas back to liquid) and isolated. In a simple distillation, a mixture is gradually heated. The solution with the lowest boiling point will change into a gas first. This gas, or vapor, then passes through a cooled tube (a condenser) where it condenses back into its liquid state. This condensed liquid is called the distillate. Figure below illustrates this. Q: Distillation is an effective method to separate mixtures comprised of two or more what? Choices: - solutes - ionic compounds - elements - pure liquids A:
Ans: pure liquids
(Q).
Answer the following question given this paragraph: The process in which a solid changes directly to a gas is called sublimation . It occurs when the particles of a solid absorb enough energy to completely overcome the force of attraction between them. Dry ice (solid carbon dioxide, CO 2 ) is an example of a solid that undergoes sublimation. Figure below shows a chunk of dry ice changing directly to carbon dioxide gas. Sometimes snow undergoes sublimation as well. This is most likely to occur on sunny winter days when the air is very dry. What gas does snow become?. Q: What is the process in which a solid changes directly to a gas called? Choices: - condensation - solidification - vaporization - sublimation A:
(A).
sublimation
Ques:Answer the following question given this paragraph: Sperm are released into the surrounding water through the osculum. If they enter a female sponge through a pore, they may be trapped by collar cells. Trapped sperm are delivered to eggs inside the female body, where fertilization takes place. The resulting zygote develops into a larva. Unlike the adult, the larva is motile. It is covered with cilia that propel it through the water. As the larva grows, it becomes more similar to an adult sponge and loses its ability to swim. Q: Unlike an adult sponge, what stage is motile due to cilia that propel it through water? Choices: - parasite - zygote - pupa - larva A:

Ans:larva
Ques: Answer the following question given this paragraph: A circuit breaker is a switch that automatically opens a circuit if too much current flows through it. This could happen if too many electric devices are plugged into the circuit or if there is an electric short. Once the problem is resolved, the circuit breaker can be switched back on to close the circuit. Circuit breakers are generally found in a breaker box that controls all the circuits in a building. Q: What type of switch automatically opens a circuit if too much current flows through it? Choices: - toggle switch - regulator switch - kill switch - circuit breaker A:
Ans:
circuit breaker