Easy 927 likes

Question

What is global warming?

WBBSE Class X Physical Science Concerns about our Environment 02 Mark 2022

Answer

Global warming is the gradual increase in Earth’s average surface temperature due to the buildup of greenhouse gases, such as carbon dioxide (CO2) and methane (CH4), in the atmosphere. These gases trap heat from the sun, causing a rise in temperature, which leads to climate changes like melting ice caps, rising sea levels, and more extreme weather patterns.

Related Questions

More WBBSE Easy level questions

1/12
Easy
900
Q. Which type of energy is transformed to electrical energy in a dynamo?
A. In a dynamo, mechanical energy is transformed into electrical energy.
Easy
712
Q. What is the SI unit of calorific value of fuels?
A. The SI unit of calorific value of fuels is joules per kilogram...
Easy
885
Q. Write the name of a gas which increases atmospheric temperature.
A. A gas that increases atmospheric temperature is carbon dioxide (CO2) OR Ultraviolet...
Easy
888
Q. Mention one fuel which is alternative to fossil fuel
A. One alternative fuel to fossil fuels is biofuel.
Easy
898
Q. Which layer of atmosphere has the greatest density? (a) Troposphere (b) Stratosphere (c) Mesosphere (d)...
A. a. Troposphere Explanation: The troposphere is the lowest layer of Earth's atmosphere...
Easy
501
Q. Mention two possible future effects of global warming on environment.
A. Two possible future effects of global warming on the environment are: Increased...
Easy
Q. How are global warming and greenhouse effect related?
A. The greenhouse effect is the process by which greenhouse gases trap heat...
Easy
Q. Write down the formula of Fire ice. How is methane gas obtained from it? [1+1]
A. Formula of Fire Ice: CH₄·nH₂O (Methane Hydrate) Methane gas is obtained by...
Easy
Q. Explain why the ozone layer is called ‘natural sunscreen’.
A. The ozone layer is called the natural sunscreen of the Earth because...
Easy
Q. What is the concept of sustainable development?
A. Sustainable development means development that meets the needs of the present generation...
Easy
908
Q. Chlorine atom (Cl) destroys Ozone molecule (O3) – show with the help of a chemical...
A. Chlorine reacts with ozone: Cl + O3 → ClO + O2 Chlorine...
Easy
645
Q. The major constituent of Biogas is (a) CH4 (b) CFC (c) CO2 (d) CO
A. (a) CH4 Explanation Biogas primarily consists of methane (CH4), with small amounts...