Essays Tagged: "heat energy"


anes appear in late summer orearly fall, when sea temperatures are at their highest. The warm watersheats the air above it, and the updrafts of warm, moist air begin to rise.Day after day the fluffy c ... rst step in the birth of a hurricane.With the lid off, the warm, moist air rises higher and higher. Heatenergy, released as the water vapor in the air condenses. As it condensesit drives the upper dra ...

(2 pages) 143 0 4.2 Oct/1995

Subjects: Science Essays > Environmental Science

Nucelar Energy

ey may be more easily captured by the fissionable atoms; and (3) a cooling system that extracts the heat energy produced. The fuel is sometimes enriched--i.e., its concentration of fissionable isotope ...

(1 pages) 45 0 5.0 Jan/1996

Subjects: Science Essays > Physics

Nuclear Power--Our Future

mmon practice of burning coal or oil. For comparison, coal combustion produces about 20-30 MJ/kg of heat energy while uranium, in a fast breeder reactor, produces more than 24,000,000 MJ/kg (Energy 27 ... ehind about 25 tons of spent fuel. This product is highly radioactive and gives off a great deal of heat. However, it can be reprocessed so that 97% can be recycled. The remaining 3%, about 700kg, is ...

(5 pages) 109 0 4.2 Mar/1997

Subjects: Science Essays > Physics

CIrculation systems over China

this motion which carries water from the ocean to the continents to provide precipitation and moves heat energy from the tropical regions toward the poles, warming the high latitudes. It is this circu ... eastern parts and easterlies over the Northwest.In contrast with the Mongolian High in winter, the heat low in July is quite thick. In 500-hPa level, the low pressure cell still exists, which is abou ...

(7 pages) 52 0 3.8 Mar/1997

Subjects: Science Essays > Earth Sciences > Meteorology

Wind Power by, Yang

st apparently "inexhaustible" sources like fusion involved the generation of large amount of wasted heat (energy) -enough to place damaging stress on even a robust ecosystem like Earth'sWe are engaged ...

(4 pages) 155 1 3.8 Aug/2002

Subjects: Science Essays > Technology

Internal Combustion Engine

An internal-combustion engine is a heat engine that burns fuel and air inside a combustionchamber located within the engine proper. Sim ... at burns fuel and air inside a combustionchamber located within the engine proper. Simply stated, a heat engine is an engine thatconverts heat energy to mechanical energy. The internal- combustion eng ... d stroke the compressed mixture is ignited--either by compression ignition or byspark ignition. The heat produced by the combustion causes the gases to expand within thecylinder, thus forcing the pist ...

(5 pages) 76 0 3.0 Jan/1996

Subjects: Science Essays > Technology

Nuclear Waste Management

tNuclear energy harnesses the energy released during the splitting or fusing of atomic nuclei. This heat energy is most often used to convert water to steam, turning turbines, and generating electrici ... e primary way of storing the nuclear waste is storage. Since spent fuel continues to be a source of heat and radiation after it is taken from the reactor, it can be stored underwater in a deep pool at ...

(5 pages) 82 0 4.0 Dec/1997

Subjects: Science Essays > Environmental Science

Atmosphere and characteristics of Jupiter

erature. It is believed that the belts represent descending areas of low pressure. Jupiter radiates heat energy out to space by way of convection. The zones carry energy to the surface and then cool, ...

(3 pages) 65 0 4.2 Mar/2003

Subjects: Science Essays > Astronomy

Phase changes of a water molecule.

ur empty cup. I guess you liked the lemonade very much! Now going from a solid to a liquid requires heat energy, which will result in melting. Since it is a hot day outside the heat is able to break t ... the ice. Watch closely as we ice molecules start to melt. This is because the ice is absorbing the heat energy. The bonds of the solid ice are slowly breaking down and soon we molecules become free t ...

(3 pages) 27 0 4.5 May/2003

Subjects: Science Essays > Chemistry

Specific Heat of Metal and Water - To determine which substance has higher heat capacity; water or metal.

PhysicsSpecific Heat of Metal and WaterPurpose: To determine which substance has higher heat capacity; water or meta ... nformation:1)Temperature: Quantity that tells how hot or cold something is compared to a standard.2)Heat: Energy that transfers from one object to another because temperature difference. It is energy ... temperature.3)Mass: measure of an object's inertia or the amount of matter in an object.4)Specific heat is the amount of heat needed by 1 gram of a substance so that it changes by 1 degree Celsius.5) ...

(2 pages) 35 0 3.5 Aug/2003

Subjects: Science Essays > Physics

Coursework...on how much energy content is in food.

it. This energy is released slowly in our bodies but more quickly if the food is burnt it air. This heat energy can be used to heat water. Some foods store and can release a lot more energy than other ... also keep the food the same distance away from the boiling tube, keep the bunsen burner on the same heat and use the same measuring cylinder each time I measure out the water.Apparatus·Boiling ...

(3 pages) 29 0 2.4 Nov/2003

Subjects: Science Essays

The birth and death of stars.

the material together in the center, accelerating the atoms, increasing the density and generating heat, creating what is called a protostar. As the heat intensifies, the speed of the contraction slo ... , the speed of the contraction slows as the hot gases resist gravity. The star radiates some of the heat energy out to space and the star continues to contract. The internal temperature continues to r ...

(4 pages) 126 1 3.0 Apr/2004

Subjects: Science Essays > Astronomy

The combustion of Alcohols investgation: Investigate the heat energy in a range of alcohol's used as fuels.

Combustion of AlcoholsTHE COMBUSTION OF ALCOHOLSPROBLEMInvestigate the heat energy in a range of alcohol's used as fuels.HYPOTHESISI predict that octanol will release the ... H20OCTANOL2C8H15OH + 24O2(r) 16C02 + 18H20We can see from the table above Octanol releases the most heat energy. This clearly shows that there is a correlation between the number of bonds in the molec ... of bonds in the molecules and how much total energy was released.I also predict that the amount of heat energy released will increase with the number of carbon atoms in the alcohol. I can show this o ...

(5 pages) 36 0 3.0 May/2004

Subjects: Science Essays > Chemistry

Do the risks of our continued use of fossil fuels at the current levels outweigh the benefits?

rbon dioxide, a greenhouse gas. This emission of CO2 is a contributor of global warming as it traps heat energy within the atmosphere. This induces numerous environmental problems: polar ice cap melti ...

(1 pages) 51 0 2.3 Jul/2004

Subjects: Science Essays

Tkink green,live green! a essay about the main enviromental problem of the society

lation will grow to about 9-10 billion. Meeting the basic needs of all these people- food, housing, heat, energy, clothing, and consumer goods-places tremendous demands on the earth's natural resource ...

(6 pages) 155 0 4.7 Oct/2004

Subjects: Science Essays > Environmental Science

Meteorological Disaster Research Paper

Meteorological Disasters are a byproduct of the Earth's atmospheric and oceanic attempts to balance heat energy uniformly throughout the planet. An example of a common meteorological disaster is thund ...

(5 pages) 58 0 5.0 Jan/2005

Subjects: Science Essays > Earth Sciences > Meteorology

Working of Electric Filament Heaters:

Appliances that heat up, such as a hair dryer, a clothes iron, toaster, electric toaster oven, or an electric space ... aster oven, or an electric space heater all work on the same idea. They change electrical energy to heat energy.The devices all plug into a source of electricity. Electric current runs from your wall ... chrome wire is an alloy of nickel and chromium. It has two features that make it a good producer of heat:Nichrome wire has a fairly high electrical resistance compared to something like copper wire, s ...

(1 pages) 18 1 2.5 Jun/2005

Subjects: Science Essays > Technology


ed; it can be changed from one form to another.b. In an engine, chemical energy of coal converts to heat; heat energy converts to kinetic energy.c. In human body, chemical energy in food is converted ... of usable energy.b. 25% of chemical energy of gasoline is converted to move a car; rest is lost as heat.c. When muscles convert chemical energy in ATP to mechanical energy, some is lost as heat.d. He ...

(2 pages) 45 0 4.0 Nov/2005

Subjects: Science Essays > Biology

Plate Tectonics: History

and time, the mechanism moving the plates is unknown, but is most likely applied by the transfer of heat energy or convection in the earth's mantle. Ice ages are also due to the plate tectonics. Geolo ...

(2 pages) 52 0 4.5 Apr/2006

Subjects: Science Essays > Earth Sciences

GCSE, Physics: What affects the resistance of a piece of wire?

ance is a property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current. Resistance involves collisions of the current-carrying cha ... direction and current is formed.The factors affecting resistance are:- Temperature; when a wire is heated, the atoms in the wire vibrate because of their increased energy. This causes more collisions ...

(10 pages) 30 0 5.0 Sep/2006

Subjects: Science Essays > Physics