Answer the following question given this paragraph: Condensation changes water vapor to liquid water. As air rises higher into the atmosphere, it cools. Cool air can hold less water vapor than warm air. So some of the water vapor condenses into water droplets. Water droplets may form clouds. Q: What changes water vapor to liquid water? Choices: - fermentation - global warming - combustion - condensation A:
condensation
(Question)
Answer the following question given this paragraph: The weight of an object is the force pulling the object downward. On Earth, this would be the gravitational force of the Earth on the object. On the moon, this would be the gravitational force of the moon on the object. The gravitational force of the moon is one-sixth the magnitude of the gravitational force of the Earth; the weight of the moon rock on the moon will be one-sixth the weight of the moon rock on the Earth's surface. Weight is measured in force unitsnewtonsby a calibrated spring scale as shown here. Q: What is the force pulling an object downward called? Choices: - momentum - density - magnetism - weight A:
(Answer)
weight
Ques: Answer the following question given this paragraph: Electromagnetic waves generally propagate out from a source in all directions, sometimes forming a complex radiation pattern. A linear antenna like this one will not radiate parallel to its length, for example. The wave is shown in one direction from the antenna in Figure 24.7 to illustrate its basic characteristics. Instead of the AC generator, the antenna can also be driven by an AC circuit. In fact, charges radiate whenever they are accelerated. But while a current in a circuit needs a complete path, an antenna has a varying charge distribution forming a standing wave, driven by the AC. The dimensions of the antenna are critical for determining the frequency of the radiated electromagnetic waves. This is a resonant phenomenon and when we tune radios or TV, we vary electrical properties to achieve appropriate resonant conditions in the antenna. Q: A current in a circuit needs a complete what? Choices: - cause - speed - stream - path A:
Ans: path
(Q).
Answer the following question given this paragraph: Density is an expression of the mass of substance in terms of the volume occupied by the substance. Q: What expresses the mass of substance in terms of the volume occupied by the substance? Choices: - velocity - frequency - diameter - density A:
(A).
density
Ques:Answer the following question given this paragraph: Concentration is the number of particles of a substance in a given volume. When the concentration of reactants is higher, the reaction rate is faster. At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react. Did you ever see a sign like the one in the Figure below ? You might see it where someone is using a tank of pure oxygen for a breathing problem. Combustion, or burning, is a chemical reaction in which oxygen is a reactant. A greater concentration of oxygen in the air makes combustion more rapid if a fire starts burning. Q: What kind of reaction do you see when the concentration of reactants is higher? Choices: - regular reaction rate - slow reaction rate - constant reaction rate - faster reaction rate A:

Ans:faster reaction rate
Answer the following question given this paragraph: Cellular respiration that proceeds in the presence of oxygen is aerobic respiration. Q: What is cellular respiration that proceeds in the presence of oxygen known as? Choices: - kinetic respiration - digestive respiration - anaerobic respiration - aerobic respiration A:
aerobic respiration