7.3.1/ Anthony

Question 1

Atmosphere

Answer 1

An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth’s atmosphere is composed of about 78 nitrogen, 21 oxygen, and one percent of other gases.

Question 2

Altitude

Answer 2

like elevation, is the distance above sea level. Areas are often considered “high-altitude” if they reach at least 2,400 meters (8,000 feet) into the atmosphere

Question 3

Density

Answer 3

Density is the number of things—which could be people, animals, plants, or objects—in a certain area. To calculate density, you divide the number of objects by the measurement of the area. The population density of a country is the number of people in that country divided by the area in square kilometers or miles

Question 4

Troposphere

Answer 4

The troposphere provides oxygen that we can breathe, keeps Earth at a livable temperature, and allows for weather to occur, making it a very important part of the atmosphere

Question 5

Stratosphere

Answer 5

we have the stratosphere. “Strat” means layer. This layer of our atmosphere has its own set of layers. There are no storms or turbulence here to mix up the air, so cold, heavy air is at the bottom and warm, light air is at the top

Question 6

Mesosphere

Answer 6

Image result for Mesosphere
The mesosphere lies between the thermosphere and the stratosphere. “Meso” means middle, and this is the highest layer of the atmosphere in which the gases are all mixed up rather than being layered by their mass. The mesosphere is 22 miles (35 kilometers) thick