ICFES: Parafrasear e Identificar Información Explícita

ICFES: Parafrasear e Identificar Información Explícita

How did the Steam Engine change life?

To fully appreciate the impact of the steam engine, let us go back to the time before the steam engine, the 1600's. At that time, power could be mainly obtained from three sources:

Wind: wind power is free, and it does not involve complex machinery. The trouble with wind power is that it's not very constant and can´t be used anywhere except on extremely flat terrain. Hills, and even trees can obstruct the wind.

Animal: beasts like the horse or the ox provided animal power. It was abundant and fuel was easy to get. The trouble with animal power is that it doesn´t scale up very well. if you need two horsepower to move a wagon down a road, you tie two horses and there you go, but if you need two hundred horsepower to turn the machinery in a factory, you have a problem.

Water: more correctly, water running downhill. Find a flow of water, build a water wheel, direct the flow on top, and you have power. Unlike animal power, it can be scaled up- just find a larger stream and build a water wheel. Unlike wind power, it was reliable. There was just one problem: water running downhill only existed in certain places, usually around hills or mountains. So if you wanted to get water power, you had to locate the mountains.

with the steam engine it was possible to run a factory anywhere a person anywhere a person chose to build it. It was possible to move a ship, power a locomotive, and pull hundreds of tons at high speed. Steam power not only ran the factories of the Industrial Revolution, it also sped up and made more reliable large scale transportation.

Multiple Choice

1 According to the author, it is necessary to know the life before the steam engine invention

How did the Steam Engine change life?

To fully appreciate the impact of the steam engine, let us go back to the time before the steam engine, the 1600's. At that time, power could be mainly obtained from three sources:

Wind: wind power is free, and it does not involve complex machinery. The trouble with wind power is that it's not very constant and can´t be used anywhere except on extremely flat terrain. Hills, and even trees can obstruct the wind.

Animal: beasts like the horse or the ox provided animal power. It was abundant and fuel was easy to get. The trouble with animal power is that it doesn´t scale up very well. if you need two horsepower to move a wagon down a road, you tie two horses and there you go, but if you need two hundred horsepower to turn the machinery in a factory, you have a problem.

Water: more correctly, water running downhill. Find a flow of water, build a water wheel, direct the flow on top, and you have power. Unlike animal power, it can be scaled up- just find a larger stream and build a water wheel. Unlike wind power, it was reliable. There was just one problem: water running downhill only existed in certain places, usually around hills or mountains. So if you wanted to get water power, you had to locate the mountains.

with the steam engine it was possible to run a factory anywhere a person anywhere a person chose to build it. It was possible to move a ship, power a locomotive, and pull hundreds of tons at high speed. Steam power not only ran the factories of the Industrial Revolution, it also sped up and made more reliable large scale transportation.

• A. in order to understand better engine's influence in common life

• B. to know the advantages of other energy sources during 1600's

• because there wasn't more power sources before its inventions

Multiple Choice

2 Before the steam engine there were three main energy sources, but

How did the Steam Engine change life?

To fully appreciate the impact of the steam engine, let us go back to the time before the steam engine, the 1600's. At that time, power could be mainly obtained from three sources:

Wind: wind power is free, and it does not involve complex machinery. The trouble with wind power is that it's not very constant and can´t be used anywhere except on extremely flat terrain. Hills, and even trees can obstruct the wind.

Animal: beasts like the horse or the ox provided animal power. It was abundant and fuel was easy to get. The trouble with animal power is that it doesn´t scale up very well. if you need two horsepower to move a wagon down a road, you tie two horses and there you go, but if you need two hundred horsepower to turn the machinery in a factory, you have a problem.

Water: more correctly, water running downhill. Find a flow of water, build a water wheel, direct the flow on top, and you have power. Unlike animal power, it can be scaled up- just find a larger stream and build a water wheel. Unlike wind power, it was reliable. There was just one problem: water running downhill only existed in certain places, usually around hills or mountains. So if you wanted to get water power, you had to locate the mountains.

with the steam engine it was possible to run a factory anywhere a person anywhere a person chose to build it. It was possible to move a ship, power a locomotive, and pull hundreds of tons at high speed. Steam power not only ran the factories of the Industrial Revolution, it also sped up and made more reliable large scale transportation.

• A. It was not possible to scale them up very well in 1600's.

• B. They had some disadvantages that the steam machine solved.

• You had to locate them in the mountains to use them well.

Multiple Choice

3 What energy source was reliable and could be scaled up?

How did the Steam Engine change life?

To fully appreciate the impact of the steam engine, let us go back to the time before the steam engine, the 1600's. At that time, power could be mainly obtained from three sources:

Wind: wind power is free, and it does not involve complex machinery. The trouble with wind power is that it's not very constant and can´t be used anywhere except on extremely flat terrain. Hills, and even trees can obstruct the wind.

Animal: beasts like the horse or the ox provided animal power. It was abundant and fuel was easy to get. The trouble with animal power is that it doesn´t scale up very well. if you need two horsepower to move a wagon down a road, you tie two horses and there you go, but if you need two hundred horsepower to turn the machinery in a factory, you have a problem.

Water: more correctly, water running downhill. Find a flow of water, build a water wheel, direct the flow on top, and you have power. Unlike animal power, it can be scaled up- just find a larger stream and build a water wheel. Unlike wind power, it was reliable. There was just one problem: water running downhill only existed in certain places, usually around hills or mountains. So if you wanted to get water power, you had to locate the mountains.

with the steam engine it was possible to run a factory anywhere a person anywhere a person chose to build it. It was possible to move a ship, power a locomotive, and pull hundreds of tons at high speed. Steam power not only ran the factories of the Industrial Revolution, it also sped up and made more reliable large scale transportation.

• water.

• animals.

• wind.

Multiple Choice

4 According to the reading, the steam engine is important because

How did the Steam Engine change life?

To fully appreciate the impact of the steam engine, let us go back to the time before the steam engine, the 1600's. At that time, power could be mainly obtained from three sources:

Wind: wind power is free, and it does not involve complex machinery. The trouble with wind power is that it's not very constant and can´t be used anywhere except on extremely flat terrain. Hills, and even trees can obstruct the wind.

Animal: beasts like the horse or the ox provided animal power. It was abundant and fuel was easy to get. The trouble with animal power is that it doesn´t scale up very well. if you need two horsepower to move a wagon down a road, you tie two horses and there you go, but if you need two hundred horsepower to turn the machinery in a factory, you have a problem.

Water: more correctly, water running downhill. Find a flow of water, build a water wheel, direct the flow on top, and you have power. Unlike animal power, it can be scaled up- just find a larger stream and build a water wheel. Unlike wind power, it was reliable. There was just one problem: water running downhill only existed in certain places, usually around hills or mountains. So if you wanted to get water power, you had to locate the mountains.

with the steam engine it was possible to run a factory anywhere a person anywhere a person chose to build it. It was possible to move a ship, power a locomotive, and pull hundreds of tons at high speed. Steam power not only ran the factories of the Industrial Revolution, it also sped up and made more reliable large scale transportation.

• A. the story of the steam engine is the story of modern invention.

• B. the Industrial Revolution made transportation more reliable.

• It contributed to the development of industry and transportation.