Formations in Limestone Caves Most caves are formed in limestone, a type of rock that easily dissolves over time. Caves form when rainwater seeps through cracks in the limestone. Sometimes, the water drips down through cracks. Other times, the woater gushes. Over a long period of time, the limestone wears away, leaving a large empty space called a cave. As water drips from the ceiling of a limestone cave, formations that look like icicles may appear. These formations are called stalactites. The stalactites grow in size and continue to drip water down to the ground of the cave. On the ground, a cone-shaped piece of rock begins to form. This formation is called a stalagmite. Sometimes a stalactite and stalagmite grow together. They form a kind of post called a pillar. Limestone pillars are a beautiful rock formation. How does one remember which formation hangs down from the ceiling and which grows up from the ground? Note that the word stalactite includes the letter c. Think of c as standing for ceiling. The word stalagmite contains the letter g. Think of g as standing for ground. Thus, a stalactite hangs from the ceiling and a stalagmite grows from the ground.

Which statement about limestone caves is an opinion?

1.Limestone pillars are a beautiful rock formation.

2.Limestone is a type of rock that dissolves over time.

3.Cracks in limestone allow rainwater to seep through.

4.Limestone caves have formations called stalactites.

answer: this problem has only trivial solutions, with all points on the same line. x=5 or x=7/5.

step-by-step explanation:

there are three triangles, and three unknowns: x, y=length of middle segment, and z=cos(angles marked with red arc).

we need

and law of cosines,

the three equations are

see attached image for solution.

zheng he was a chinese explorer who lead seven great voyages on behalf of the chinese emperor. his seven total voyages were diplomatic, military, and trading ventures, and lasted from 1405 – 1433. however, most historians agree their main purpose was to promote the glory of ming dynasty china.

explanation:

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from thales, who is often considered the first western philosopher, to the stoics and skeptics, ancient greek philosophy opened the doors to a particular way of thinking that provided the roots for the western intellectual tradition. here, there is often an explicit preference for the life of reason and rational thought. we find proto-scientific explanations of the natural world in the milesian thinkers, and we hear democritus posit atoms—indivisible and invisible units—as the basic stuff of all matter. with socrates comes a sustained inquiry into ethical matters—an orientation towards human living and the best life for human beings. with plato comes one of the most creative and flexible ways of doing philosophy, which some have since attempted to imitate by writing philosophical dialogues covering topics still of interest today in ethics, political thought, metaphysics, and epistemology. plato’s student, aristotle, was one of the most prolific of ancient authors. he wrote treatises on each of these topics, as well as on the investigation of the natural world, including the composition of animals. the hellenists—epicurus, the cynics, the stoics, and the skeptics—developed schools or movements devoted to distinct philosophical lifestyles, each with reason at its foundation.

with this preference for reason came a critique of traditional ways of living, believing, and thinking, which sometimes caused political trouble for the philosophers themselves. xenophanes directly challenged the traditional anthropomorphic depiction of the gods, and socrates was put to death for allegedly inventing new gods and not believing in the gods mandated by the city of athens. after the fall of alexander the great, and because of aristotle’s ties with alexander and his court, aristotle escaped the same fate as socrates by fleeing athens. epicurus, like xenophanes, claimed that the mass of people is impious, since the people conceive of the gods as little more than superhumans, even though human characteristics cannot appropriately be ascribed to the gods. in short, not only did ancient greek philosophy pave the way for the western intellectual tradition, including modern science, but it also shook cultural foundations in its own time.