Impact of Global Warming

Q.

What are some benefits of global warming?

Q.

Discuss the causes and effects of global warming. What measures need to be taken to control global warming ?

Q.

Write a short note on global warming.

Q.

What are 3 environmental issues?

Q.

What is the use of a catalytic converter in automobile exhaust systems?

Q.

Name the major sources of carbon dioxide in the atmosphere?

Q.

Excessive burning of fossil fuels is a major cause of __________.

Q. The UN conference of parties on climate change in the year 2012 was held at:

1. Warsaw
2. Durban
3. Lima
4. Doha

Q. What is global warming? Mention any four measures to control global warming.

Q.

In a catalytic converter, what are the catalysts?

Q.

In vehicles, catalytic converters are used to

1. To increase the mileage of vehicles

2. To convert ${\mathbf{CO}}_{\mathbf{2}}$ into carbonates

3. To increase the efficiency of lead mixed petrol

4. To convert CO to ${\mathbf{CO}}_{\mathbf{2}}$

Q. Which one of the following is a wrong statement?

1. Greenhouse effect is a natural phenomenon
2. Eutrophication is a natural phenomenon in freshwater bodies
3. Most of the forests have been lost in tropical areas
4. Ozone in upper part of atmosphere is harmful to animals

Q. Read the following statements (A - D) related to the depletion of the ozone layer by CFCs and select the correct option stating true (T) and false (F).

A. CFCs are the most damaging agents of the ozone layer.
B. Chlorine atoms are released due to the activity of UV radiation on CFCs.
C. The active chlorine converts ozone into hydrogen atoms.
D. Cl atoms are consumed in the process of degradation of ozone.

1. A - T, B - F, C - T, D - T
2. A - F, B - T, C - T, D - F
3. A - T, B - T, C - F, D - F
4. A - F, B - F, C - T, D - T

Q.

Give one point of difference between the following pairs on the basis of what is given in the brackets.

1. Cobalt chloride paper and goats bladder (the process where it is used)
2. ACTH and IAA
3. Greenhouse gases and ozone-depleting substances. (explain the function)
4. Transpiration and guttation (define the terms).
5. Synapsis and synapse (explain the terms).

Q. Name the radiations absorbed by greenhouse gases.

Q.

Why is global warming also known as the greenhouse effect?

Q.

How does afforestation prevent the greenhouse effect?

Q. Global warming is caused by greenhouse effect. Justify.

Q. How burning of fossil fuels leads to increase in global warming?

Q. State whether true or false:
Melting of ice caps is a normal phenomenon.

1. True
2. False

Q. List out the effects of global warming and efforts to control global warming.

Q. Snow-blindness in Antarctic region is due to

1. High reflection of light from snow
2. Damage of retina caused by infrared rays
3. Freezing of fluids in the eye by low temperature
4. Inflammation of cornea due to high dose of UV-B radiation

Q. What is Global Warming? Write their main five reasons.

Q.

How much do humans contribute to global warming?

Q. Write two harmful effects of green house effects.

Q. Give two ways in which we can all helps to reduce global warming. Write a catchy slogan to create awareness about it.

Q. Wetlands and oceans release a large amount of methane into the atmosphere. What is the relative contribution of methane to total global warming?

1. 20%
2. 90%
3. 57%
4. 75%

Q. What are the disadvantages of global warming?

Q.

Name the gas that is responsible for the greenhouse effect.

Q. During the past century, the temperature of the earth has increased by ${0.6}^{o}C$ , most of it during the last few decades. Rise in temperature causes deleterious changes in the environment, thus leading to increased melting of polar ice caps as well as other places like Himalayan snow caps. Suggest any two control measures that will reduce global warming?