Causes of Global Warming

Q.

What are the benefits of reducing greenhouse gas emission?

Q.

How do humans influence the cycling of matter in ecosystems?

Q.

What results in the increaase of carbon dioxide contents of earth's atmosphere?

Q.

The global warming has resulted in :

(a) the increase in yield of crops

(b) the decrease in sea levels

(c) the decrease in human deaths

(d) the increase in sea levels.

Q. Excessive combustion of fossil fuels leads to ___________.

1. global warming
2. tsunamis
3. earthquakes
4. deforestation

Q.

If CO₂ is absent in the atmosphere of earth, then

1. Temperature will decrease

2. Temperature will increase

3. Plants will flourish well

4. No effect

Q. State true or false:

Encouraging the use of refrigerators and air conditioners helps in reducing the adverse effects of global warming.

1. True
2. False

Q.

Name the hydrocarbon which is responsible for the global warming.

Q. Global warming

1. has same effect throughout the world
2. effects varies in different regions
3. increase with the increasing in pressure
4. none of the above

Q.

An increase in carbon dioxide content in the atmosphere would not cause:

1. More heat to be retained by the environment

2. Increase in photosynthesis in plants

3. Global warming

4. The abundance of desert plants

Q. Which of the following air pollutants is mainly responsible for increasing green house effect and global warming?

1. Carbon monoxide
2. Nitrogen dioxide
3. Carbon dioxide
4. Sulphur dioxide

Q. What is meant by Global warming?

Q.

______________ is responsible for the green house effect.

1. Infrared rays

2. Ultraviolet ray

3. X- rays

4. Radio waves

Q. Which of the following is correct regarding the effect of global warming on human?

1. Global warming affect on climate can adversely affect humans.
2. All of the above
3. An increase in temperature can result in a longer life cycle for diseases.
4. Global warming can affect our future ability to obtain food.

Q.

Define global warming.

Q. How will global warming effect the sea level.

1. rise
2. climate change
3. effect on whether
4. none of these

Q. Why the Ozone layer is important for existence of life on the Earth?

Q.

Will global warming cause an ice age?

Q. Assertion :Any change in the climate of an area can affect the plants and animals that live there. Reason: Some animals might adapt or move elsewhere, but others could have trouble surviving. Climate change also alters plants' and animals' life cycles. For example, some flowers are blooming earlier in the spring, while some animals are migrating at different times.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. What are the consequences of the Global Warming?

1. Decrease in Earth's temperature have resulted in Ice Ages
2. A rise in sea level
3. Stronger storms and where they occur, a change in where foods can be produced, and stress on plants that will not have had enough time to adapt
4. All of the above

Q. Without green house effect, the average temperature of earths surface would have been :

1. $-{18}^{\circ }C$
2. ${33}^{\circ }C$
3. $0^{\circ }C$
4. ${15}^{\circ }C$

Q. What do you mean by global warning?

Q. Select the greenhouse gases from the following:

1. Oxygen
2. Water vapour
3. Ozone
4. Nitrous oxide

Q. What will be the effect of global warming at the poles?

1. Decreasing of temperature
2. Increasing of temperature
3. constant of temperature
4. none of the above

Q. $\left(i\right)$ Name the gas which causes the Greenhouse effect.
$\left(ii\right)$ Which property of water makes it an effective coolant?

Q. Assertion :The greenhouse effect is a natural process that helps make the Earth warm enough for us to live. Reason: The Earth gets energy from the sun, heats up, and then gives off energy in a different form, called infrared radiation.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. State the effect of global warming in coastal regions.

Q. Excessive combustion of fossil fuels leads to .

1. deforestation
2. global warming
3. earthquakes
4. tsunamis

Q.

The earth has an average temperature of 33°C which makes life possible on earth. This is due to:

1. global warming
2. deforestation
3. soil erosion
4. natural greenhouse effect

Q. What are the 4 impacts of global warming on life on the earth? $\left[4\text{marks}\right]$