Description : Name one other green house gas.
Last Answer : methane
Description : Explain how global warming can lead to the flooding of low lying areas.
Last Answer : Global warming will cause the ice caps at the Poles to melt which in turn will cause the sea level to rise, thus causing a change in weather patterns: more flooding will occur in the lowlying parts of the world.
Description : Explain how fossil fuel cause air pollution.
Last Answer : Ans: When fossil fuels are burnt they produce harmful substances that cause air pollution and, in turn harm the environment.
Description : a) What does crude oil look like? b) Explain why crude oil is a fossil fuel.
Last Answer : a) Crude oil is thick and black. b) Crude oil is a fossil fuel because it was made from the dead bodies of microscopic plants and animals that once lived in the sea.
Description : Suggest a good place to establish a wind farm.
Last Answer : Ans: b) A good place to establish a wind farm would be a windy location on land or out at sea.
Description : What is the wind farm?
Last Answer : Ans: a) A wind farm has a large number of wind turbines in one place.
Description : What is the main problem with wind power?
Last Answer : Ans: The energy produced by wind is difficult to store, and electricity is only produced when the turbines are rotating.
Description : Give two examples of renewable energy sources.
Last Answer : b) The Sun, wind, and tides.
Description : What is a renewable energy source?
Last Answer : Ans: a) A renewable energy source is a natural energy source which can supply energy for millions of years without becoming exhausted.
Description : What is a global warming?
Last Answer : Ans: a) An increase in the amount of carbon dioxide in the air is increasing the greenhouse effect, which is causing the temperature of the Earth to rise. This is global warming.
Description : What happen to the heat energy that reaches Earth from the sun?
Last Answer : Ans: The layer of air which surrounds the Earth acts as an insulating layer. Carbon dioxide gas in the atmosphere absorbs the heat from the Sun and keeps it in thereby maintaining a specific temperature for life on Earth.
Description : Name three gases that cause rain to be acidic.
Last Answer : Ans: carbon dioxide, sulphur dioxide, nitrogen dioxide
Description : Why are gases deposits found on top of oil deposit?
Last Answer : Ans: Gas deposits collect above the oil because they are less dense.
Description : What does porous mean?
Last Answer : Ans: Porous means something having sponge-like holes through which liquid or gas can seep.
Description : Suggest why there are no human fossil in coal.
Last Answer : Ans: There were no human beings living on the Earth at that time.
Description : What is a fossil fuel?
Last Answer : Ans: A fossil fuel is formed from the remains of living things. Coal, oil, and natural gas are fossil fuels.
Description : Give three uses for oil products.
Last Answer : Ans: Oil products are used in vehicles, for heating homes and in power stations.
Description : List five common fuels that could be used in the home
Last Answer : Ans: coal, natural gas, kerosene oil, wood, charcoal
Description : Give the meaning of the following words a) combustion b) ignition
Last Answer : a) The chemical reaction which takes place when a fuel reacts with oxygen to give out thermal energy (heat) is called combustion. b) The small amount of energy needed to light a fuel is called ignition.
Description : Where most of the world’s energy does comes from?
Last Answer : Ans: Most of the world’s energy comes from burning fuels.
Description : Which one of the following is not a 'green house gas'? (1) Chlorofluorocarbons (2) Methane (3) Carbon dioxide (4) Nitrogen
Last Answer : (4) Nitrogen Explanation: The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. The anthropogenic compound of Chlorofluorocarbons is also a greenhouse gas, with a much higher potential to enhance the greenhouse effect than CO2.
Description : The gas which is mainly responsible for the green house effect is: (1) Ozone (2) Oxygen (3) Carbon dioxide (4) Carbon monoxide
Last Answer : (3) Carbon dioxide Explanation: A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental ... the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone.
Description : Which one amongst the following is not a Green House gas? (1) Nitrogen (2) Carbon dioxide (3) Carbon Monoxide (4) Chloro fluoro carbons
Last Answer : (1) Nitrogen Explanation: A greenhouse has (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone.
Description : Green House gas is A. Nitrogen B. Oxygen C. Methane D. Carbon dioxide
Last Answer : D. Carbon dioxide
Description : Which one of the following is not a ‘green house gas’ ? (1) Chlorofluorocarbons (2) Methane (3) Carbon dioxide (4) Nitrogen
Last Answer : Nitrogen
Last Answer : Carbon dioxide
Description : Which one of the following is a major green house gas? (1) Carbon dioxide (2) Chloro fluorocarbon (3) Carbon monoxide (4) Freon
Description : The effect of increase in carbon dioxide level of the atmosphere and its profound effect on our climate is called the (A) Catalytic conversion (B) Green house effect (C) Global warming (D) Both (B) and (C)
Last Answer : (D) Both (B) and (C)
Description : The Green House Effect is caused by an excess of _____ A. Carbon dioxide B. Carbon monoxide C. Carbon tetrachloride D. None of the above
Last Answer : ANSWER: A
Description : 'Green House Effect' means – (1) Pollution in houses in tropical regions (2) Trapping of solar energy due to atmospheric oxygen (3) Trapping of solar energy due to atmospheric carbon dioxide (4) Cultivation in green houses so as to check pollution
Last Answer : (3) Trapping of solar energy due to atmospheric carbon dioxide Explanation: The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric ... fuels and clearing of forests, have intensified the natural greenhouse effect, causing global warming.
Description : 'Green House Effect' means - (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution
Last Answer : (2) trapping of solar energy due to carbon dioxide gases Explanation: Green House Effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases and is re-radiated in all directions.
Description : Which of the following green house gases has the greatest heat trapping ability? (1) Chlorofluoro carbon (2) Methane (3) Carbon dioxide (4) Nitrous oxide
Last Answer : (1) Chlorofluoro carbon Explanation: Gases that trap heat in the atmosphere are called green house gases. Global Warming Potentials (GWPs) are used to compare the abilities of different green house gases to trap ... 1.2. The higher the GWP, the more heat the specific gas can keep in the atmosphere.
Description : Which one of the following group of gases contribute to the "Green House Effect"? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetrailouride and Nitrous oxide
Last Answer : (1) Carbon dioxide and Methane Explanation: The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When ranked by their direct contribution to the greenhouse ... 72 %, Carbon Dioxide: 9- 26 %, Methane: 4-9 % and Ozone: 3-7 %.
Description : Which one of the following contributes largely to the ‘green house effect’? (1) Ozone (2) Carbon monoxide (3) Carbon dioxide (4) Water vapour
Last Answer : (4) Water vapour Explanation: The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When these gases are ranked by their direct contribution to the ... dioxide: 9-26 per cent; Methane: 4-9 per cent; and Ozone: 3-7 per cent.
Description : The ‘Green House effect' is produced due to the presence of excess amount of – (1) Sulphur dioxide (2) Nitrogen dioxide (3) Carbon monoxide (4) Methane
Last Answer : (4) Methane Explanation: By their percentage contribution to the greenhouse effect on Earth the four major gases are: Water vapour (36-70%), Carbon dioxide (9-26%), Methane (4-9%) and Ozone (3- 7%).
Description : Oceans act as sinks for atmospheric gases including carbon dioxide whose concentration in the atmosphere is increased by the (A) Forestation (B) Rain (C) Green house effect (D) Vegetation
Last Answer : (C) Green house effect
Description : The following are green house gases a. Methane, carbon dioxide, carbon monoxide b. Methane, water vapour, carbon sulphide c. Carbon dioxide, hydrogen sulphide, hydrogen cyanide d. Carbon dioxide, Carbon monoxide, hydrogen cyanide
Last Answer : a. Methane, carbon dioxide, carbon monoxide
Description : Which one of the following green house gases has the shortest residence time in the atmosphere? (A) Chlorofluorocarbon (B) Carbon dioxide (C) Methane (D) Nitrous oxide
Last Answer : (C) Methane
Description : Which of the following green house gases has the greatest heattrapping ability? (1) Chlorofluoro carbon (2) Methane (3) Carbon dioxide (4) Nitrous oxide
Last Answer : Chlorofluoro carbon
Description : ‘Green House Effect’ means (1) cultivation of crops in green house to conserve heat (2) trapping of solar energy due to carbon dioxide gases (3) trapping of solar energy by earth upper surface (4) increase of heat due to atmospheric pollution
Last Answer : trapping of solar energy due to carbon dioxide gases
Description : Which one of the following group of gases contribute to the “Green House Effect”? (1) Carbon dioxide and Methane (2) Ammonia and Ozone (3) Carbon monoxide and Sulphur dioxide (4) Carbon tetraflouride and Nitrous oxide
Last Answer : Carbon dioxide and Methane
Description : The ‘Green House effect’ is produced due to the presence of excess amount of (1) Sulphur dioxide (2) Nitrogen dioxide (3) Carbon monoxide (4) Methane
Last Answer : Methane
Description : Which one of the following contributes largely to the ‘green house effect’ ? (1) Ozone (2) Carbon monoxide (3) Carbon dioxide (4) Water vapour
Last Answer : Water vapour
Description : 'Green House Effect' means (1) Pollution in houses in tropical regions (2) Trapping of solar energy due to atmospheric oxygen (3) Trapping of solar energy due to atmospheric carbon dioxide (4) Cultivation in green houses so as to check pollution
Last Answer : Trapping of solar energy due to atmospheric carbon dioxide
Description : The gas used for artificial ripening of green fruit is - (1) ethane (2) ethylene (3) carbon dioxide (4) acetylene
Last Answer : (2) ethylene Explanation: Ethylene gas is used for artificial ripening of green fruit. Ethylene is a natural ripener, but it is also used as an artificial fruit ripener.
Description : The gas used for artificial ripening of green fruit is - (1) Acetylene (2) Ethylene (3) Ethane (4) Carbon dioxide
Last Answer : (2) Ethylene Explanation: Fruits such as apples and pears emit a greater amount of ethylene gas in fruits, which affects their ripening.
Description : Which one of the following is a major green gas? (1) Carbon dioxide (2) Chloro fluorocarbon (3) Carbon monoxide (4) Freon
Last Answer : (1) Carbon dioxide Explanation: A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the ... System, the atmospheres of Venus, Mars, and Titan also contain gases that cause greenhouse effects.