English for Science, Technology, Engineering, and Mathematics, week(1-5) All Quiz Answers with Assignments.


 English for Science, Technology, Engineering, and Mathematics

Week 1 Assignment:


In your own words, define climate change and give at least one example that supports climate change. Be sure to include comparative adjectives in your definition.

Climate change refers to the change in the environmental conditions of the earth. This happens due to many internal and external factors. The climatic change has become a global concern over the last few decades. Besides, these climatic changes affect life on the earth in various ways. These climatic changes are having various impacts on the ecosystem and ecology. Due to these changes, a number of species of plants and animals have gone extinct.The climate started changing a long time ago due to human activities but we came to know about it in the last century. During the last century, we started noticing the climatic change and its effect on human life. We started researching on climate change and came to know that the earth temperature is rising due to a phenomenon called the greenhouse effect. The warming up of earth surface causes many ozone depletion, affect our agriculture, water supply, transportation, and several other problems.These include volcanic eruption, solar radiation, tectonic plate movement, orbital variations. Due to these activities, the geographical condition of an area become quite harmful for life to survive. Also, these activities raise the temperature of the earth to a great extent causing an imbalance in nature.Man due to his need and greed has done many activities that not only harm the environment but himself too. Many plant and animal species go extinct due to human activity. Human activities that harm the climate include deforestation, using fossil fuel, industrial waste, a different type of pollution and many more. All these things damage the climate and ecosystem very badly. And many species of animals and birds got extinct or on a verge of extinction due to hunting.

Week 2 Assignment:


Choose one man-made source of the Greenhouse Effect and describe one or two ways it is contributing to climate change in our world.

Greenhouse Gases These gases or molecules are naturally present in the atmosphere of the Earth. However, they are also released due to human activities. These gases play a vital role in trapping the heat of the Sun and thereby gradually warming the temperature of Earth. The Earth is habitable for humans due to the equilibrium of the energy it receives and the energy that it reflects back to space. Global Warming and the Greenhouse Effect The trapping and emission of radiation by the greenhouse gases present in the atmosphere is known as the Greenhouse effect. Without this process, Earth will either be very cold or very hot, which will make life impossible on Earth. The greenhouse effect is a natural phenomenon. Due to wrong human activities such as clearing forests, burning fossil fuels, releasing industrial gas in the atmosphere, etc., the emission of greenhouse gases is increasing. Thus, this has, in turn, resulted in global warming. We can see the effects due to these like extreme droughts, floods, hurricanes, landslides, rise in sea levels, etc. Global warming is adversely affecting our biodiversity, ecosystem and the life of the people. Also, the Himalayan glaciers are melting due to this.

Week 4 Assignment:


Describe the energy systems used in your country. Suggest a new energy system for your country and explain how it would be better for the environment.

The United States currently relies heavily on coal, oil, and natural gas for its energy. Fossil fuels are non-renewable, that is, they draw on finite resources that will eventually dwindle, becoming too expensive or too environmentally damaging to retrieve. In contrast, renewable energy resources- such as wind and solar energy-are constantly replenished and will never run out. Most renewable energy comes either directly or indirectly from the sun. Sunlight, or solar energy, can be used directly for heating and lighting homes and other buildings, for generating electricity, and for hot water heating, solar cooling, and a variety of commercial and industrial uses.The sun’s heat also drives the winds, whose energy, is captured with wind turbines. Then, the winds and the sun’s heat cause water to evaporate. When this water vapor turns into rain or snow and flows downhill into rivers or streams, its energy can be captured using hydroelectric power.Along with the rain and snow, sunlight causes plants to grow. The organic matter that makes up those plants is known as biomass. Biomass can be used to produce electricity, transportation fuels, or chemicals. The use of biomass for any of these purposes is called bioenergy.Hydrogen also can be found in many organic compounds, as well as water. It’s the most abun­dant element on the Earth. But it doesn’t occur naturally as a gas. It’s always combined with other elements, such as with oxygen to make water. Once separated from another element, hydrogen can be burned as a fuel or converted into electricity.

Week 5 Assignment:


Describe how the scientific community might work together to reduce the causes and/or impacts of climate change. Use your own research or any of the articles from the course to support your prediction and cite your source(s).

Nature has, in its own way, contributed to the cause of climate change by regular adaptations. A natural disaster like volcano releases toxic gases such as sulphur-dioxide apart from water vapor, dust and ash. The released sulphur-dioxide gets accumulated in the topmost layer of atmosphere. The released substances also obstruct sunlight from entering earth’s surface leading to earth cooling. The formed water combines with the toxic gas to result in sulphuric acid that hangs around the topmost layer of atmosphere. These have the capability to block sunlight and disrupt regular processes leading to eco-imbalance. Part of the climate change is attributed to continental drift as it changes the physical features of the land area, their location and location of water, eventually tidal currents.If nature changes the climate unintentionally, humans have multiplied the climate change effect by several notches. Industrial revolution, over-usage of resources, inefficient resource handling can be attributed to human -influential causes of climate change. This also includes greenhouse emission gases and burning of fossil fuels like oil, coal, natural gas. Excessive emission from industries has polluted the atmosphere to great levels. It is not surprising to note that developed countries contribute the maximum to atmospheric pollution through carbon emissions. Ten of the top countries in the world contribute 67% of carbon emissions [3]. However, it is the poor of the world who bear the maximum brunt due to this. A report by mongabay reveals that more than one million square kilometers of forest land was lost between 2000 and 2005 [2]. It is a well-known fact that trees absorb carbon-dioxide emitted by vehicles and industries. Hence, we should introspect the findings of the report to estimate the amount of unabsorbed carbon-dioxide and other toxic gases.

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