Tag: heat and energy

When we are nearer to the ice, our body temperature is higher than the surrounding temperature. So heat flows from out body to the surrounding resulting in lowering the body temperature. Thus we feel cold when being nearer to the ice.

Two major mechanisms are causing sea level to rise.
First, shrinking land ice, such as mountain glaciers and polar ice sheets, is releasing water into the oceans.
Second, as ocean temperatures rise, the warmer water expands. 
The warming of the atmosphere caused by increases in greenhouse gases is melting glaciers and causing ocean water to warm and expand thermally. Both effects increase the volume of the ocean, raising its surface level.
Thus Option D is correct.

During winter, our body temperature is higher than the surrounding temperature. So heat flows from out body to the surrounding resulting in lowering the body temperature. Thus we feel cold during winter.

Cold air tries to carry body heat away. Blankets form a barrier between the body and cold air. Hence heat doesn't transfer through the blankets as air will not flow through the blankets.

If an ideal thermally conductive black body were the same distance from the Sun as the Earth is, it would have a temperature of about 5.3 C. However, since the Earth reflects about 30% of the incoming sunlight, this idealized planet's effective temperature (the temperature of a black body that would emit the same amount of radiation) would be about 18 C. The surface temperature of this hypothetical planet is 33 C below Earth's actual surface temperature of approximately 14 C. The mechanism that produces this difference between the actual surface temperature and the effective temperature is due to the atmosphere and is known as the greenhouse effect.
Thus Option A is correct.

    Due to global warming the temperature of earth's atmosphere in increasing , and the temperature at poles and high mountains is also increasing . This increase in temperature will melt the ice on poles and peaks of mountain and will melt the glaciers . This will result in rise in the level of sea .

Due to global heating temperature of the atmosphere increases,which inturns requires its controlling measures that consequently involves new technologies and hence becomes a burden in terms of money.

A hurricane is a large rotating storm with high speed winds that forms over warm waters in tropical areas. According to 2006 studies by the National Oceanic and Atmospheric Administration, the strongest hurricanes in the present climate may be upstaged by even more intense hurricanes over the next century as the Earth's climate is warmed by increasing levels of greenhouse gases in the atmosphere. Hurricanes will get worse and hurricanes like katrina will be common on the coastal area. It is predicted that the global temperature would increase by $2.5^0F$ to $10^0F$. 

A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range. Greenhouse gases cause the greenhouse effect on planets. The primary greenhouse gases in Earth's atmosphere are water vapour $(H _2O)$, carbon dioxide $(CO _2)$, methane $CH _4)$, nitrous oxide $(N _2O)$ and ozone $(O _3)$.