Which Atmospheric Layer Prevents Meteoroids from Reaching Earth’S Surface
The atmosphere is divided into four main layers: the exosphere, the thermosphere, the mesosphere, and the stratosphere. The stratosphere is located between 10 and 50 kilometers above the Earth’s surface and is where most meteors burn up. This layer is heated by ultraviolet radiation from the sun, which causes a lot of turbulence. This turbulence makes it difficult for meteoroids to penetrate the atmosphere and reach Earth’s surface.
Lesson 11 AIR & WATER( grade 5)
The thermosphere is characterized by very high temperatures, due to the absorption of ultraviolet radiation from the Sun. This radiation causes the particles in this layer to become electrically charged, which creates a barrier that deflects incoming meteoroids. As a result, they never make it through to Earth’s surface.
Which Phrase Describes Air Density?
“Density” is a scientific term that describes how much mass there is in a given volume. “Air density” specifically refers to the density of air, which is the measure of how much mass of air is present in a given volume. The higher the density of air, the more mass there is in that volume.
The phrase “air density” typically describes one of two things: either the average density of air throughout the atmosphere or the local density of air at a specific location. The average density of air decreases as altitude increases; so, at higher altitudes, there are fewer molecules of air per unit volume than there are at lower altitudes. Local densities can vary significantly depending on atmospheric conditions like temperature and humidity.
For example, warm air tends to be less dense than cool air because it has more energy and thus takes up more space. There are a few different ways to measure air density. The most common method is to use a device called an anemometer, which measures both wind speed and direction.
An anemometer can be used to calculate the density of air by measuring how much mass flows through a certain area in a given amount of time. Another way to measure density is with a barometer, which measures atmospheric pressure. The pressure exerted by the weight of all the molecules in an enclosed space is direct proportional to the number of those molecules—and therefore also directly proportional to theair’sdensityin that space.
Credit: science.howstuffworks.com
Which Atmospheric Layer Prevents Meteoroids from Reaching Earth’s Surface Brainly?
The atmosphere is divided into several layers, each with its own specific characteristics. The layer that prevents meteoroids from reaching Earth’s surface is the thermosphere. This layer is located just above the mesosphere and extends from about 80 km to 600 km above Earth’s surface.
It is characterized by very high temperatures, which can reach up to 2000 degrees Celsius. This high temperature is caused by the absorption of ultraviolet radiation from the Sun. The thermosphere also has very low densities, which means that it can easily be penetrated by fast-moving objects like meteoroids.
Does the Mesosphere Protect Meteoroids?
The mesosphere is the second layer of Earth’s atmosphere. It lies above the stratosphere and below the thermosphere. The mesosphere starts at an altitude of 50 kilometers (31 miles) and extends to 85 kilometers (53 miles).
The mesosphere is a region where meteors burn up as they enter Earth’s atmosphere. The air pressure in the mesosphere is only 1/1000th of what it is at sea level. This makes it a very thin layer of our atmosphere.
The temperature in the mesosphere varies from -85 degrees Celsius (-121 degrees Fahrenheit) near the top to -30 degrees Celsius (-22 degrees Fahrenheit) near the bottom.
What are the 7 Atmosphere Layers?
There are 7-atmosphere layers. The first layer is the troposphere. The second layer is the stratosphere. The third layer is the mesosphere. The fourth layer is the thermosphere. The fifth layer is the exosphere. The sixth layer is the ionosphere, and the seventh and final layer is the magnetosphere.
What is the Mesosphere Layer?
The mesosphere is the second layer of Earth’s atmosphere. It lies above the stratosphere and below the thermosphere. The mesosphere begins at an altitude of about 50 kilometers (31 miles) and extends to 85 kilometers (53 miles).
Temperatures in the mesosphere decrease with height. The upper part of the mesosphere is sometimes called the mesopause, which is the coldest place on Earth with temperatures near -93°C (-135°F)! Themesothere is important because it protects us from meteors.
Most meteors burn up before they reach the ground, but occasionally a large one will make it through. The meteoroids that do make it to Earth usually hit somewhere in the troposphere.
Conclusion
The thermosphere is the layer of Earth’s atmosphere that lies directly above the mesosphere. It extends from about 80 km to 640 km above Earth’s surface. The thermosphere is sometimes called the ionosphere because it is here that most of the atmospheric ions are found.
The thermosphere is very thin, with only about 1% of Earth’s atmospheric molecules being found in this layer. However, despite its low density, the thermosphere has a very important role in protecting us from meteoroids. Meteoroids are small pieces of rock or metal that enter Earth’s atmosphere from space.
Most meteoroids burn up in the atmosphere before they reach the ground, but if they do make it to the ground, they can cause significant damage. The thermosphere protects us from meteoroids by providing a barrier between them and Earth’s surface. The high temperatures in the thermosphere cause most meteoroids to burn up before they can reach Earth’s surface.
