Solar Power

Archive for March, 2010

Question 4
Weather is the state of the atmosphere at a moment in time and at any location, whereas climate is the

distance from the equator measured in degrees north or south of the equator.
local geography of an area, solar activity, and volcanic activity.
given temperature of an area on any particular day.
overall pattern of weather at a location recorded over a period of years.

Question 5
All of the following are environmental impacts of using pesticides EXCEPT that they

threaten human health.
increase the variety of the crops.
pollute ecosystems.
prompt the evolution of pest resistance.

Question 6
The pollution in groundwater can be difficult to remove because

groundwater recharges slowly.
pollutants cling to the materials that make up an aquifer.
water is dispersed through large areas of rock and sand.
all of the above

Question 7
The ____________ in the stratosphere works like a sunscreen to shield the Earth’s surface from most of the sun’s ultraviolet light.

chlorine
chlorofluorocarbons
ozone
particulate matter

Question 8
The major sources of ocean pollution are

fish waste, decaying plants, and other ocean organisms.
oil, toxic waste, and medical waste.
sewage, animal feces, and marine life.
sodium, fluoride, and lime.

Question 9
Chlorofluorocarbons (CFCs) damage the ozone layer when their

chemicals are broken apart.
molecules contain too many chlorine atoms.
molecules break apart in the stratosphere and absorb UV radiation.
atoms make their way into the stratosphere.

Question 10
Which of the following are human uses for land?

for houses, businesses, industry, roads
to grow plants for food and fiber
to graze livestock and wildlife
all of the above

Question 11
A major effect that water pollution has on ecosystems is

an increase in the size of the organisms within ecosystems.
to allow more diversity within ecosystems.
biomagnification.
all of the above

Question 12
Using water to manufacture goods, dispose of wastes, and generate power is called

agricultural use.
residential use.
industrial use.
individual use.

Question 13
Major causes of malnutrition include

poor body tissue and genetics.
consumption of too many calories and lack of exercise.
eating excess amino acids and fats.
poor diet and lack of food.

Question 14
All of the following are examples of traditional agricultural techniques EXCEPT

plows pulled by livestock.
irrigation by water flowing through ditches.
weeds removed by hand.
use of synthetic chemicals.

Question 15
Which of the following is a long-term effect of air pollution to humans?

emphysema
lung cancer
heart disease
all of the above

Question 16
Modern agricultural techniques consist of which of the following?

plows pushed by the farmer or pulled by livestock
machinery powered by fossil fuels, overhead sprinklers
organic fertilizers such as manure
irrigation by use of ditches

Question 17
The predicted increase in global temperature is known as

the ozone hole.
greenhouse gases.
the greenhouse effect.
global warming.

Question 18
Which of the following is NOT an effect of acid precipitation?

loss of animal and plant populations and aquatic ecosystems
acidification of soil
health problems and poisoning of the human body
increased occurrences of storms, rain, hurricanes, natural disasters

Question 19
A warmer Earth could result in which of the following consequences?

adverse impacts on human health
global rise in sea level
disruption of global weather patterns
all of the above

Question 4
… climate is the…
overall pattern of weather at a location recorded over a period of years.

Question 5
All of the following are environmental impacts of using pesticides EXCEPT that they
… DON’T increase the variety of the crops.

Question 6
The pollution in groundwater can be difficult to remove because
… all of the above

Question 7
… stratosphere … shield … ultraviolet light.
… ozone

Question 8
The major sources of ocean pollution are
… oil, toxic waste, and medical waste.

Question 9
Chlorofluorocarbons (CFCs) damage the ozone layer when their
… chemicals are broken apart.
(best)
… molecules contain too many chlorine atoms.
(would be better if it said "any" rather than "too many")

Question 10
Which of the following are human uses for land?
… all of the above

Question 11
A major effect that water pollution has on ecosystems is
… biomagnification.

Question 12
Using water to manufacture goods, dispose of wastes, and generate power is called
… industrial use.

Question 13
Major causes of malnutrition include
… poor diet and lack of food.

Question 14
All of the following are examples of traditional agricultural techniques EXCEPT
… use of synthetic chemicals.

Question 15
Which of the following is a long-term effect of air pollution to humans?
… all of the above

Question 16
Modern agricultural techniques consist of which of the following?
… machinery powered by fossil fuels, overhead sprinklers

Question 17
The predicted increase in global temperature is known as
… global warming.

Question 18
Which of the following is NOT an effect of acid precipitation?
… increased occurrences of storms, rain, hurricanes, natural disasters

Question 19
A warmer Earth could result in which of the following consequences?
… all of the above
although "adverse effects on human health" would largely only occur if they refused to yield land to the ocean…

Why not a? geothermal electric grid tie generator?
hi i got a idea for a geothermal device that would generate electric power and grid tie (feed the energy grid) the juice back into the grid.
is anybody outthere interested in developing a device like that?
if you think about solar wind those alternative fuels are weather dependent, but a geothermal device has always the same avarage output and is over 24 hours more productive than either wind or solar.

But not a powerplant size geothermal unit a residential unit you can put in your backyard like an air conditioner with either

pipes buried 6 feet below forming a grid covering your hole backyard.

or

pipes sunk into a lake

similar to this

http://www.youtube.com/watch?v=PULLXM41oj4&feature=PlayList&p=5C5190BA426EFA37&playnext=1&index=32

If there is enough heat in your backyard to turn water into steam go for it. The concept is used in Iceland. If you don’t have that much heat in your backyard you could cover the whole neighborhood in pipes and it won’t be enough to produce power.

Nowadays, seeing the dearth in the earth’s reserved energy resources, different organizations are trying to utilize the renewable energy resources like solar energy, tidal energy, wind energy etc. for different purposes. Among them Solar Energy is the most abundant and is gaining more popularity. The decline in the availability of fossil fuels and hike in the cost of electricity have paved the way for solar energy to become the alternative source of energy for all of us.

Solar heaters: more feasible for home

People are now trying to build homemade solar heater so that they get relief from the shortage of energy. New innovations are coming up for running industries and households and out of all innovations for utilizing the energy of the sun; solar heaters are the best option for household activities. Besides, converting solar energy by using solar heater takes less designs and processing in comparison to other application of solar energy.

Working of solar heaters

When the molecules are excited, their vibration causes the evolution of heat as a by-product and to stabilize themselves they have to release this energy. This happens when the sunlight falls on the highly thermal conductive substance and excites them. This movement and heat is transferred from one material to other causing an incessant flow of heat.

Application of solar heaters

Water heaters and air heaters are the best application of solar heaters used for household purpose. All varieties of solar heaters have solar panels. The mechanism is very simple, entrapment of solar energy into photovoltaic cells and converting it to electrical and heat energy.

Reasons for building a solar heater at home

Though you can get one in the market, but building one yourself at home will give you satisfaction and you can design it according to your wish. Secondly, initial cost is lessened because you can use recyclable materials like aluminum cans, which are easily available at home for making solar panels.

sidana.abhi
http://www.articlesbase.com/home-improvement-articles/homemade-solar-heater-736899.html