Table of Contents
What is the atmosphere described as?
An atmosphere is the layers of gases surrounding a planet or other celestial body. These gases are found in layers (troposphere, stratosphere, mesosphere, thermosphere, and exosphere) defined by unique features such as temperature and pressure.
What is the best describes the atmosphere?
The atmosphere is the blanket of gases which surrounds Earth. It is held near the surface of the planet by Earth’s gravitational attraction. Without the atmosphere there could be no life on Earth.
Which best describes how the Earth’s atmosphere is heated?
Answer: The sun heats earth’s atmosphere unevenly. this causes convection currents to move in large circles in the atmosphere.
How the Earth’s atmosphere is heated?
Key Concept Heat in Earth’s atmosphere is transferred by radiation, conduction, and convection. Solar energy travels through space as radiation and passes through the atmosphere to Earth’s surface. Energy is carried through the atmosphere by radiation, conduction, and convection.
What is the basis for the division of Earth’s atmosphere?
The atmosphere can be divided into layers based on its temperature, as shown in the figure below. These layers are the troposphere, the stratosphere, the mesosphere and the thermosphere. A further region, beginning about 500 km above the Earth’s surface, is called the exosphere.
What are the top three elements in the Earths atmosphere?
Oxygen Radon Nitrogen Oxygen Radon Nitrogen
What is the function of the Earths atmosphere?
The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth’s gravity. The atmosphere of Earth protects life on Earth by creating pressure allowing for liquid water to exist on the Earth’s surface, absorbing ultraviolet solar radiation,…
Why does the Earth need atmosphere?
The atmosphere also helps to sustain life of Earth. It provides oxygen for humans and animals to breathe, and carbon dioxide for plants. Through the hydrological (precipitation) cycle, plants and animals receive the water they need to survive.
What does Earth’s atmosphere look like?
The atmosphere looks like a blanket of gas when you look at it from space or the ground. When scientists started to examine the atmosphere, they noticed that there were different parts and different layers. There are layers of different molecules, temperatures, and pressures. Overall, the atmosphere is made up of a few main molecules.