Essays Tagged: "gases"

Human vs cetacean divers

urface. At this depth, pressure on the diver's chest cavity, lungs, and air within the lungs causes gases such asnitrogen in that air to dissolve in the blood of lung tissue. Dissolved nitrogen at hig ... yond that level, cetacean lungs collapse and air within them is shifted to various bodyspaces where gases fail to dissolve in the blood. Why don't cetaceans display decompression sickness when they as ...

(2 pages) 32 0 3.0 Dec/1996

Subjects: Science Essays > Biology > Human Biology

Greenhouse Effect

at certain variable constituents of the Earth's lower atmosphere have onsurface temperatures. These gases--water vapor (H2O), carbon dioxide (CO2), andmethane (CH4)--keep ground temperatures at a glob ... t 15 degreesC (60 degrees F). Without them the average would be below the freezing point ofH20. The gases have this effect because as incoming solar radiation strikes thesurface, the surface gives off ...

(2 pages) 124 0 3.6 Nov/1996

Subjects: Science Essays > Environmental Science

The History Of Flight. Speaks of the Wright brothers and Leonardo da Vinci

ttempts were doomed to fail.Aerodynamics: (Definition of) is the study of the flow of air and other gases and of the forces acting on bodies moving through the gases. It is a branch of fluid mechanics ...

(8 pages) 85 0 4.5 Jan/1996

Subjects: Science Essays > Engineering > Mechanical Engineering

CFC'S detroy the Ozone

re is a blanket of air that surrounds the planet. This atmospheric air is made up of many different gases, 78% nitrogen, 21% oxygen, and 1% of a dozen or more other gases like carbon dioxide, helium, ... osphere is created by the acidification if salt spray.However, for the first objection, atmospheric gases do not segregate by weight in the troposphere and the stratosphere. This is because vertical t ...

(9 pages) 72 0 3.8 Jan/1996

Subjects: Science Essays > Environmental Science

An Ecosystem's Disturbance by a Pollutant

osystem's disturbance by a pollutant.Some of the most frequent pollutants in our ecosystem include: gases such as sulphur dioxide, elements such as mercury and arsenic, and even pollution by nutrients ... osystem's disturbance by a pollutant.Some of the most frequent pollutants in our ecosystem include: gases such as sulphur dioxide, elements such as mercury and arsenic, and even pollution by nutrients ...

(83 pages) 282 0 3.7 Jan/1996

Subjects: Science Essays > Environmental Science

Acid Rain

ere and when itrains it brings the pollution down with it. Sulfur dioxide and nitrogen oxide are thegases that form the acid rain. When these gases mix with moisture it can makerain, snow, hail, or ev ...

(6 pages) 63 0 2.7 Sep/1997

Subjects: Science Essays > Environmental Science

El petroleo

e;n de las fracciones obtenidas, con lo que se separan así los siguientes productos:· Gases o líquidos muy fácilmente volátiles, que a veces se aprovechan como combu ...

(2 pages) 24 0 3.0 Jan/1996

Subjects: Science Essays > Chemistry

Global Warming

96 that Earth has been warmed by a blanket of gasses (This is called the "greenhouse effect."). The gases--water vapor (H2O), carbon dioxide (CO2), and methane (CH4)--keep ground temperatures at a glo ... degrees C (60 degrees F). Without them the average would be below the freezing point of water. The gases have this effect because as incoming solar radiation strikes the surface, the surface gives of ...

(3 pages) 113 0 3.0 Feb/1996

Subjects: Science Essays > Environmental Science

"Gas Law Variables" It describes volume, pressure, and amount of gas.

Volume:All gases have to be enclosed in a container that can be sealed with no leaks. The space in that contain ...

(1 pages) 44 0 3.5 Dec/2002

Subjects: Science Essays > Physics

The Kyoto Protocol

A majority of scientists agree that global warming, caused by higher levels of gases that trap heat in the Earth's atmosphere, could lead to catastrophic consequences. Among them: ... levels in the "commitment period" 2008-2012. The targets cover emissions of the six main greenhouse gases: Carbon Dioxide (CO2), Methane (CH4), Nitrous Oxide (N2O), Hydro Fluorocarbons (HFCs), Per Flu ... gas emissions. It would apply to all entities that emit more than 10,000 metric tons of greenhouse gases per year. The bill is a market-based system that allows companies and national governments to ...

(2 pages) 123 0 4.0 Mar/2003

Subjects: Law & Government Essays

Question: What are the 3 main kinds of rocks?

grained, coarse grained, or porphyritic. Volcanic rocks sometimes have holes in them from escaping gases (called vesicles). Sometimes the holes are filled with minerals, and then the rock is amygdalo ...

(9 pages) 158 0 3.8 Mar/2003

Subjects: Science Essays > Earth Sciences > Geology & Geosciences

Nitric Acid

entigrade. An exothermic reaction takes place producing nitrogen monoxide and steam. The mixture of gases is cooled and nitrogen monoxide reacts with further oxygen in the air to produce nitrogen diox ...

(1 pages) 34 0 4.8 Apr/2003

Subjects: Science Essays > Chemistry

Acid rain.

n USA, has 62 percent sulphuric acid, 32 percent nitric acid and 6 percent hydrochloric acid. These gases are produced entirely from burning fossil fuels, mainly in power stations and road transports. ...

(2 pages) 54 1 2.0 Apr/2003

Subjects: Science Essays > Environmental Science

Acid Rain and the effects on the environment.

acidic rain, fog and snow, sleet or hail. Dry acid deposition refers to acidic particles or acidic gases.Acid rain is measured on a point system of 0 to 14.0=maximum acidity7=neutral point14=maximum ...

(2 pages) 89 3 4.2 Apr/2003

Subjects: Science Essays > Earth Sciences

Outline for Dalton and his work in Chem(outline only).

Partial Pressures*Dalton's law of partial pressure is defined as the total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gasesDalton's Atomic Theory*Matt ...

(3 pages) 66 1 3.0 May/2003

Subjects: Science Essays > Chemistry

This essay is about the different types of volcanoes and how they are made. Includes a works cited page.

A volcano is an opening in the earth's surface through which lava, hot gases, and rock fragments erupt. These openings are formed when melted rock from deep in the earth b ...

(5 pages) 88 1 4.3 Oct/2003

Subjects: Science Essays > Earth Sciences

Ozone Layer Depletion.

leting, but it was important it is that we work together reduce the amount of harmful chemicals and gases, which we release into the atmosphere, which depletes this protective layer. However, I was cl ...

(7 pages) 115 0 3.4 Oct/2003

Subjects: Science Essays

The Ozone hole,what causes the hole, what are some of the effects that it has on humans and animals,and what is being done to try in slow down the process.

S) are emitted into the atmosphere. Winds efficiently mix the troposphere and evenly distribute the gases. CFCs are extremely stable, and they do not dissolve in rain (Haas 2001). So, after a period o ...

(4 pages) 65 0 4.7 Nov/2003

Subjects: Science Essays > Earth Sciences > Geography

Global Warming.

els, cutting down forest, and by taking part in other activities that release certain heat trapping gases into the air.One major cause of global warming is the use of fossil fuels. Fossil fuels like c ... nt that enters the air when the fuel made from the plants is burned.If we can reduce the greenhouse gases going into the atmosphere, we probably can slow the rate of global warming and climate. There ...

(9 pages) 186 0 4.5 Dec/2003

Subjects: Social Science Essays

GCSE Chemistry - Sodium Thiosulphate Coursework

the collision theory of reacting particles: temperature, concentration (of solution), pressure (in gases), surface are (of solid reactants), and catalysts. I have chosen to investigate the effect tem ...

(10 pages) 83 1 4.1 Jan/2004

Subjects: Science Essays > Chemistry