Answer the following question given this paragraph: Q: In contrast to mammals and birds, freshwater fishes produce large volumes of very dilute what? Choices: - nitrogen - feces - blood - urine A:
urine
Answer the following question given this paragraph: Some materials are natural permanent magnets. The most magnetic material in nature is the mineral magnetite, also called lodestone (see Figure below ). The magnetic domains of magnetite naturally align with Earth's axis. The picture on the left shows a chunk of magnetite attracting small bits of iron. The magnetite spoon compass shown on the right dates back about 2000 years and comes from China. The handle of the spoon always points north. Clearly, the magnetic properties of magnetite have been recognized for thousands of years. Q: Also called lodestone, the mineral magnetite is the most powerful what? Choices: - material on Earth - synthetic magnet - healing magnet - natural permanent magnet A:
natural permanent magnet
Q: Answer the following question given this paragraph: At higher latitudes, the Sun's rays are less direct. The farther an area is from the Equator, the lower its temperature. Q: The farther an area is from the equator, what happens to the temperature? Choices: - it fluctuates - it increases - it stabilizes - it gets lower A:
A: it gets lower
Question: Answer the following question given this paragraph: There are many examples in the chemical world of changes in entropy. Phase transitions are one obvious example. When a substance makes a transition from the liquid state to the gaseous state, the particles have many more possible arrangements, because they are no longer confined to a specified volume in which they are close to each other; gas particles can move freely throughout their container. Vaporization represents an increase in entropy. In the opposite direction, a liquid loses entropy when it freezes to a solid. Because solids have very ordered structures, there are fewer possible arrangements of particles that would result in the properties associated with a solid. Q: The phase transition of a substance changing from a liquid state to a gaseous state is an example of what? Choices: - trichina - spirogyra - catostrophy - entropoy A:
Answer: entropoy
*Question*
Answer the following question given this paragraph: A friend whispers to you in class in a voice so soft that you have to lean very close to hear what he's saying. Later that day, your friend shouts to you across the football field. Now his voice is loud enough for you to hear him clearly even though he's many meters away. Obviously, sounds can vary in loudness. Loudness refers to how loud or soft a sound seems to a listener. The loudness of sound is determined, in turn, by the intensity of sound. Intensity is a measure of the amount of energy in sound waves. The unit of intensity is the decibel (dB) . Q: What is the measure of the amount of energy found in sound waves? Choices: - decibels - density - frequency - intensity A:
**Answer**
intensity
(Question)
Answer the following question given this paragraph: The elements in Group 2 (beryllium, magnesium, calcium, strontium, barium, and radium) are called the alkaline earth metals (see Figure below ). These elements have two valence electrons, both of which reside in the outermost s sublevel. The general electron configuration of all alkaline earth metals is n s 2 . The alkaline earth metals are still too reactive to exist in nature as free elements, but they are less reactive than the alkali metals. They tend to be harder, stronger, and denser than the alkali metals, and they also form numerous compounds with nonmetals. Q: The elements in group 2 are called what? Choices: - halogens - metal alloys - noble gases - alkaline earth metals A:
(Answer)
alkaline earth metals