Answer the following question given this paragraph: A chain of volcanoes form as an oceanic plate moves over a hotspot. This is how it happens. A volcano forms over the hotspot. Since the plate is moving, the volcano moves off of the hotspot. When the hotspot erupts again, a new volcano forms over it. This volcano is next to the first. Over time, there is a line of volcanoes. The youngest is directly above the hotspot. The oldest is the farthest away ( Figure below ). Q: A chain of what structures form as an oceanic plate moves over a hotspot? Choices: - ridges - earthquakes - outcrops - volcanoes A:
volcanoes
(Question)
Answer the following question given this paragraph: Chemistry is the study of matter and the changes it undergoes. Q: What science is the study of matter and the changes it undergoes? Choices: - biology - geology - astronomy - chemistry A:
(Answer)
chemistry
Ques: Answer the following question given this paragraph: Metals are elements that can conduct electricity. Most elements are metals. Q: Metals are elements that can conduct what? Choices: - cycle - orchestras - pollution - electricity A:
Ans: electricity
(Q).
Answer the following question given this paragraph: Farsightedness, or hyperopia, is the condition in which distant objects are seen clearly, but nearby objects appear blurry. It occurs when the eyeball is shorter than normal (see Figure below ). This causes images to be focused in a spot that would fall behind the retina (if light could pass through the retina). Hyperopia can be corrected with convex lenses. The lenses focus images farther forward in the eye, so they fall on the retina instead of behind it. Q: What is the condition in which distant objects are seen clearly, but nearby objects appear blurry? Choices: - synthesise , or hyperopia - nearsightedness or hyperopia - gleam , or hyperopia - farsightedness, or hyperopia A:
(A).
farsightedness, or hyperopia
Ques:Answer the following question given this paragraph: Gasoline and oils are complex chemical mixtures designed to burn in a way that will efficiently produce energy while emitting a minimal amount of air pollution. The refining of gasoline has improved engine performance but is much more complicated than simply using the crude products extracted from oil wells, as was common in the late 1800s. Most gasoline contained lead at one time, because this additive helped the engine run more smoothly. However, this caused lead contamination in the environment, so new "unleaded" formulations were created that could be burned smoothly without the addition of poisonous heavy metals. Oils for lubrication have special additives that reduce engine wear. Some special fuel blends have also been created to generate more power in race car engines. Q: Why did people stop adding lead to gasoline? Choices: - bad smell - to expensive - explosions - environmental pollution A:

Ans:environmental pollution
Answer the following question given this paragraph: Making Connections: Cosmology and Particle Physics There are many connections of cosmologyby definition involving physics on the largest scalewith particle physicsby definition physics on the smallest scale. Among these are the dominance of matter over antimatter, the nearly perfect uniformity of the cosmic microwave background, and the mere existence of galaxies. Matter versus antimatter We know from direct observation that antimatter is rare. The Earth and the solar system are nearly pure matter. Space probes and cosmic rays give direct evidencethe landing of the Viking probes on Mars would have been spectacular explosions of mutual annihilation energy if Mars were antimatter. We also know that most of the universe is dominated by matter. This is proven by the lack of annihilation radiation coming to us from space, particularly the relative absence of 0.511-MeV rays created by the mutual annihilation of electrons and positrons. It seemed possible that there could be entire solar systems or galaxies made of antimatter in perfect symmetry with our matter-dominated systems. But the interactions between stars and galaxies would sometimes bring matter and antimatter together in large amounts. The annihilation + radiation they would produce is simply not observed. Antimatter in nature is created in particle collisions and in decays, but only in small amounts that quickly annihilate, leaving almost pure matter surviving. Particle physics seems symmetric in matter and antimatter. Why isn't the cosmos? The answer is that particle physics is not quite perfectly symmetric in this regard. The decay of one of the neutral K -mesons, for example, preferentially creates more matter than antimatter. This is caused by a fundamental small asymmetry in the basic forces. This small asymmetry produced slightly. Q: The lack of annihilation radiation coming to us from space proves that the universe is dominated by what? Choices: - vacuum - energy - space - matter A:
matter