1. ________ production is a direct conversion of solar energy to electricity. 2.
ID: 291113 • Letter: 1
Question
1.________ production is a direct conversion of solar energy to electricity.
2. ________ is a metal with a wide range of uses; it has received considerable attention in recent years because of its growing importance in batteries used in cell phones, laptop computers, and hybrid and electric-powered vehicles.
3.Water resources are nearly uniform across the Earth's surface.
4.Since the 1960s, as a result of automobile modifications (as well as other factors), carbon monoxide emissions in the U.S. have declined by more than three-fourths and ________ emissions by more than 95 percent.
Renewable energy Ethanol energy Photovoltaic electric Solar constant Fast-acting electricExplanation / Answer
1) Photo voltaic
the photo voltaic effect is the production of electric current in a material when it expose to light, the fundamental theory of this phenomenon was proposed by Albert Eienstein known as the photoelectric effect.
the photo voltaic system consist of solar cell which made of silicon, and theelectric current produces when the sunlight incident on it.
2)Lithium
Lithium battery is a rechargeable, and it is very popular for portable electronic devices, like laptops, Mobile phones.
lithium is a light metal, which has high electro chemical potential and large specific energy per weight, this properties makes it very useful and popular.
3) False.
water resources varies with the location over the earth surfaces in a wide range. there are different sources like lakes, rivers underground water, glaciers. there are method for desalination of water. so the water resources are not uniform but the same from of resource can found most of the areas which are under same geographical locations.
4) Hydrocarbon and sulphur dioxide
Hydrocarbons emmission occurs due to the incomplete burning of fuels and the sulphur dioxide in the exhaust is due to the presenc of sulphur in the fuel, so this emission depends on the sulphur content of the fuel.
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