All exercise S.Qs of Climate Change of Science of Global Challenges. We have gathered all S.Qs for BS/MSc Physics.
Q.1 What is the greenhouse effect?
Answer: It is a process that occurs when gases in Earth’s atmosphere trap the Sun’s heat. This process makes Earth much warmer than it would be without an atmosphere.
Q.2 What are the 4 major greenhouse gases?
Answer: The main gases responsible for the greenhouse effect include carbon dioxide, methane, nitrous oxide, and water vapor (which all occur naturally).
Q.3 What is an example of the greenhouse effect?
Answer: One example of the greenhouse effect is the warming of a car’s interior when the vehicle is left out in the sun. It has been noticed that the car is always much hotter inside than the outside temperature.
Q.4 Are glass/plastic sheet greenhouses good or bad?
Answer: They are helpful because they provide extra opportunities to grow food, which otherwise might not have existed. They usually produce a good crop, as there is less of a chance that bad weather or pests will destroy it. Therefore, overall greenhouses are more beneficial to us than detrimental.
Q.5 How do greenhouses work?
Answer: A greenhouse works by converting light energy into heat. Light enters the greenhouse and is trapped there by the glass and absorbed by the plants and other objects.
Q.6 What is carbon footprint?
Answer: A carbon footprint is the total amount of greenhouse gases (including carbon dioxide and methane) that are generated by our actions. The average carbon footprint for a person in the United States is 16 tons, one of the highest rates in the world.
Q.7 Which country is carbon neutral?
Answer: As far as early achievers go, Bhutan and Suriname are the only two countries that have achieved carbon neutrality and are actually carbon negative (removing more carbon than they emit).
Q.8 Why some gases are greenhouse gases while others are not?
Answer: A greenhouse gas like soaks up this infrared energy, it vibrates and reemits the infrared energy back in all directions. About half of that energy goes out into space, and about half of it returns to Earth as heat. Gases like Oxygen and Nitrogen are transparent to infrared light and so do not act as greenhouse gases.
Q.9 Why Ocean currents are important?
Answer: The ocean currents regulate global climate by distributing solar radiations evenly on earth surface. Without currents in the ocean, the equator would be super-hot while the poles would be colder.
Q.10 Oceans are sinks for the carbon, comment.
Answer: Oceans are considered the main natural carbon sinks, as they are capable of absorbing about 50% of the carbon emitted into the atmosphere. In particular, plankton, corals, fish, algae, and other photosynthetic bacteria are responsible for this capture.
Q.11 Which instrument is used to measure wind speed?
Answer: An anemometers can record wind speed and direction. The unit of wind speed is nautical mile per hour (1 Nautical mile = 1.15 miles = 1.85 km).
Q.12 What is an ecosystem?
Answer: An ecosystem is a system consisting of biotic and abiotic components that functions together as a unit. Thus, an ecosystem is an ecological community, consisting of different populations of organisms that live together in a particular habitat.
Q.13 What is the structure of an ecosystem?
Answer: The structure of an ecosystem is characterized by the organization of both biotic and abiotic components. It also includes the climatic conditions prevailing in that particular environment. The biotic and abiotic components are interrelated in an ecosystem.
Q.14 Differentiate between a food web and a food chain.
Answer: A food chain is a linear sequence of organisms that starts from producer organisms and ends with decomposer species. The Food web is a connection between multiple food chains. The food chain follows a single path whereas the food web follows multiple paths.
Q.15 What is a pathogen?
Answer: A pathogen is an organism that causes diseases to the host after infection.
Q.16 What is a parasite?
Answer: A parasite is an organism that lives on or in another organism of another species. It usually derives nutrients at the expense of its host.
Q.17 What is sustainability?
Answer: Sustainability means meeting our own needs without compromising the ability of future generations to meet their own needs.
Q.18 Differentiate between environment and ecosystem.
Answer: Environment refers to the surroundings, whereas, an ecosystem is an interaction between the environment and the living organisms. The environment is the area where living organisms live. An ecosystem is a community where the biotic and abiotic elements interact with each other.
Q.19 What is a general circulation model used for?
Answer: General circulation models (GCMs) are a class of computer-driven models for weather forecasting, understanding climate, and projecting climate change.
Q.20 What is precipitation?
Answer: Deposition of water on the earth in the form of hail, mist, rain, sleet, dew, or snow.
Q.21 How do clouds form?
Answer: Condensation of water vapors in the atmosphere results in cloud formation.
