Hydrogen, helium, ammonia, methane, neon, coal gas and pure nitrogen are all lighter than air. A pocket of air can be made lighter than the surrounding air by heating it. More »

Gases that are lighter than air include water vapor, methane, hot air, hydrogen, neon, nitrogen, ammonia and helium. These gases have a lower density than air, which causes them to rise and float in the atmosphere. More »

Heating the gas in an air balloon makes the balloon rise because the gas in the balloon becomes lighter than natural air. The heated gas has less mass per unit of volume than that of the cool air surrounding the balloon. More »

Gases that are lighter than air include water vapor, methane, hot air, hydrogen, neon, nitrogen, ammonia and helium. These gases have a lower density than air, which causes them to rise and float in the atmosphere. More »

Saturn is believed to be comprised of hydrogen, helium, methane, ammonia, ethane and hydrogen deuteride, according to Universe Today. The rings of Saturn are made up of bits of ice, dust and rock. More »

www.reference.com Science Astronomy Planets

Some benefits of biomass energy include a marginal carbon footprint; they produce marginal sulfur and methane emissions. As of 2014, the biomass energy industry supports approximately 66,000 jobs in the United States. Th... More »

The gases that play a role in global warming include carbon dioxide, nitrous oxide, methane, chlorofluorocarbons and water vapor. These compounds are called greenhouse gases because their presence in the atmosphere can b... More »

www.reference.com Science Environmental Science