ENGR 110: INTRODUCTION TO ENGINEERING Science, Engineering & Mathematics -Cemito

Question

ENGR 110: INTRODUCTION TO ENGINEERING Science, Engineering & Mathematics -Cemitos College Homework Assignment #8-Due March 31st, 2017 Multiple-choice guestions on global engineering issues fair qualio, including the "California Water Story" film.), aerospace engineering NASA, infrastructure. 1. Which of the following is popularly thought to be a primary contributor to global warming? a. Greenhouse gases b. Heavy snowfall & ground-covered snow that reflect sunlight c. Tilting of the Earth's axis d. Undersea volcanic activity 2. Which of the following is the most abundant greenhouse gas? a. Carbon dioxide b. Methane c. Nitrous oxide d. Water vapor 3. Which of the following air pollutants has a reddish-brown color, causing air to look "dirty?" a. Carbon dioxide b. Carbon monoxide c. Nitrogen dioxide d. Sulfur dioxide 4. Which of the following air pollutants has a foul odor? a. Carbon dioxide b. Carbon monoxide c, Nitrogen dioxide d. Sulfur dioxide 5. Which of the following air pollutants is colorless, odorless, and toxic? a. Carbon dioxide b. Carbon monoxide c, Nitrogen dioxide d. Sulfur dioxide 6. What is the world's number one cause or source of air pollution? a. Burning oil, coal & gas b. Flatulence (mostly from animals0 c. Photosynthesis d. Water vapor

Explanation / Answer

1. answer is part (a)

This is because greenhouse gases contains carbon dioxide and co2 is primary contributor to global warming.Co2 is produced from burning fossil fuel ,emitted from direct human-induced impacts etc..

2.answer is part (d)

water vapor is the most abundant greenhouse gas which contributes around 40 to 70 percent and carbo dioxide is second abundant greenhouse gas which contributes around 20-25%.

3.answer is part (c)

nitrogen dioxide is a gas of reddish brown colour which makes air dirty when it comes in contact with air.

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