By pondering what earth would be like without an atmosphere, students gain a better perspective of its purpose and function plan your 60-minute lesson in science or atmosphere (science) with helpful tips from drewe warndorff. Earth is the third planet from the sun and the fifth largest planet in the solar system the planet is around 45 billion years old, and life appeared on its surface around 35 billion years ago. The physics of its interactions with the atmosphere, and the biology of its organisms unit 6 examines the composition of earth's atmosphere the combined effects of earth's motions and energy. Chapter 3: introduction to the atmosphere i size of earth's atmosphere a air 1 air: a mixture of gases, mainly nitrogen and oxygen 2 pure air is invisible gases in it are colorless, odorless, and tasteless. The atmosphere introduction structure of the atmosphere solar radiation and the atmosphere states of water humidity air pressure and condensation clouds and cloud.
A zone of atmosphere extending from earth's surface to about 80 kilometers that is uniform in terms of the proportions of its component gases hydrosphere the water portion of our planet one of the traditional subdivisions of earth's physical environment. Atmosphere as a series of six semicircles, starting with earth at the bottom and making each layer's thickness proportional to its actual thickness have them draw and label key. The earth is enveloped by an atmosphere that is composed of five layers, namely troposphere, stratosphere, mesosphere, thermosphere, and ionosphere read on to know the significance of each layer of the earth's atmosphere.
Earth's atmosphere is a layer of gases surrounding the planet earth and retained by the earth's gravity it contains roughly 78% nitrogen and 21% oxygen 097% argon and carbon dioxide 004% trace. The exosphere is the outermost layer of earth's atmosphere (ie the upper limit of the atmosphere) it extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km (6,200 mi 33,000,000 ft) where it merges into the solar wind. The troposphere is the lowest layer of the atmosphere in it, temperature decreases with altitude in it, temperature decreases with altitude the troposphere gets some of its heat directly from the sun.
Atmosphere exosphere-- the last layer of the atmosphere, difficult to tell where it stops and space begins, very few atoms in this layer of the atmosphere thermosphere-- the air is really thin that high up. From the perspective we get on earth, our planet appears to be big and sturdy with an endless ocean of air from space, astronauts often get the impression that the earth is small with a thin, fragile layer of atmosphere. Its first layer, the stratosphere, is closest to earth and serves as the activity spot for weather production and cloud formation it contains an ozone layer, which prevents dangerous sun rays from passing through clouds and modifies temperature, letting life exist. Earth's atmosphere extends more than 560 kilometers (348 miles) above the planet's surface and is divided into four layers, each of which has distinct thermal, chemical, and physical properties (fig 1. The earth's crust is the layer with which we are familiar it is the thinnest layer of the planet, varying from about 5 to 10 kilometres on the ocean beds to 30 to 50 kilometres beneath continental land masses.
• the geosphere is the layer of earth under both the atmosphere and the oceans it includes the core, the mantle, and the crust chapter 1 introduction to earth. The earth has layers not unlike an onion and can be dissected to understand the physical and chemical properties of each layer and its influence on the rest of the earth generally speaking, earth. Earth's atmosphere is a very thin layer of gases covering a very thin layer just above the surface of the planet this layer of gases comprises a thickness of approximately 150 km (93 miles) and is held in place by the force of gravity this layer is subsequently divided into five main layers: the.
The earth has four different layers surrounding us: the atmosphere, troposphere, and stratosphere each layer has something special about it the troposphere is where all our weather occurs. The atmosphere is a huge protective layer around the earth its different layers are like a filter, keeping the sun's harmful radiations from reaching the surface of the earth it allows only a part of the sun's heat to reach us, thus preventing the earth from getting too hot. Directions introduction tell students that they are going to use a model to explore how far the earth's atmosphere extends above the surface of the earth and will learn about the thickess of the different layers of the atmosphere.
For this reason, atmospheric scientists and meteorologists give the different parts of the earth's atmosphere different names the average temperature profile for the first 120 kilometres and the names given to these regions are shown in figure 1. The atmosphere is layered, there are layers in the earth's crust, and there are layers below the crust until one arrives at the center of the earth the atmosphere may be thought of as a column of air (fig 85 . The atmosphere is the air that plants and animals breathe to survive the atmosphere is made up of mostly nitrogen (78%) and oxygen (21%) there are lots of other gases that are part of the atmosphere, but in much smaller amounts.