Lighter than air

virtually all facets of modern human life. It is not uncommon to find even groceries listing themselves as being “eco-friendly” in a bid to attract the environmentally conscious customer. The effects of global warming are not just about blowing hot air in the pursuit of delivering chilling information. This phenomenon has devastating consequences for all, regardless of geographical location. One of the most commonly known effects is the heating up of the atmosphere. Scientists have shown that there

Contemporary music is one of the most popular genres in the world, encompassing genres such as jazz, pop, rock, R&B, folk and musical theatre. Performers in this genre are often less likely to have received formal vocal training or have knowledge of healthy vocal production methods. (Gilman et al, 2009). Given this, it is also less likely that contemporary singers (particularly younger performers) are less likely to seek medical advice should problems arise. (Gilman et al., 2009) The lack of knowledge

of harmful pollutants and toxics from entering our atmosphere in the form of CO2. There are three major forms of fossil fuels: coal, oil, and natural gas. Fossil fuels are considered nonrenewable resources because fossil fuels get consumed quicker than they can reform. Fossil fuels were formed millions of years ago during the Carboniferous period. During that time period, the earth was filled with algae and other forms of plant life. As plants started to die, they sank into the depths of the ocean

high viscosity. The higher viscosity of a magma, the faster the lava will flow after eruption. A build up of rhyolitic magma prevents the release of trapped gas and the rocks then begin melting inside the Earth's crust, forming magma. The magma is lighter than the solid rocks that are surrounding and this causes it to rise and collect in magma chambers underneath the volcano (Stages of a Volcano Eruption). The second stage of a volcanic eruption begins with building pressure. The erupting force generally

Humans have always had a fascination with flying since the beginning of time. Hot air balloons were invented in 1783, one step closer to the airplane. The balloon is filled with hot air, which makes the balloon fly to the air because hot air is lighter than cool air. The only problem with the hot air balloon was that you could not control the direction it was going. The first airplane was actually a glider. This aircraft was launched from a cliff or from any high place. It rode on the wind

The American Automotive Industry had to adjust to the new emissions standards from the Clean Air Act of 1970, and the fuel economy requirements of the Energy Policy and Conservation Act, all while building cars that attracted to American consumers. These new requirements caused many Americans to lose their curb appeal for larger, higher output vehicles. The Japanese and European imports were lighter and more fuel efficient, so naturally they were better suited to meet new emission requirements

Living a life without meat is healthier, kinder to the environment and more humane than a diet with meat. I should know, I was shortening my life span by eating so much meat. I was literally killing myself, one bite at a time. After my diagnoses with high cholesterol I started researching ways to begin a healthier lifestyle. It was then that I found out about the many negative effects farmed animals have on the environment. Sufficed to say, I was ultimately mortified when I read

object. In figure 1, a hot mug of coffee will eventually cool down because of the lower surrounding air temperature. The heat leaves the warmer coffee mug temperature and enters a lower temperature because the cold surrounding gets more energy than it had before. The warmer coffee mug molecules move faster by hitting against each other and bounce apart, and so they end up further apart from each other than they were before, producing heat. In addition, some other heat sources are the sun, volcanoes, fire

cultural hazards, (b) chemical hazards, (c) physical hazards, and (d) biological hazards. Cultural: unsafe highways, assault, unsafe working conditions, poverty OR lifestyle choices like smoking, drinking, unsafe sex Chemical: harmful chemicals in air, water, food, soil, man-made products Physical: natural hazards like earthquakes, fires, volcanic eruptions, floods Biological: 1400+ pathogens that can cause disease (bacteria, fungi, viruses, parasites) What is toxicology, and how do scientists measure

this in for far too long. The air was so hot and damp in the classroom, it only made my anxiety worse and no matter how hard i tried i couldn 't focus on the lecture, all i could hope was that the teacher didn 't pick up on how i haven 't been listening since the second the class started. It was only second period and i felt like i was going insane, i had to wait till the end of the day to talk to my