Wind is created by the uneven heating of Earth's surface and atmosphere. Different substances on the planetary surface absorb solar radiation at different rates. Warmer air expands to create a pressure difference that produces wind, the movement of air that occurs as this difference seeks to equalize.Know More
As the sun heats Earth, land absorbs solar radiation more readily than water, which allows it to heat at a much faster rate. Heat radiates out from the planet's surface to warm the atmosphere through a process known as convention. Wind is created when the air above landmasses absorbs heat from the surface until it begins to expand and rise, drawing in heavier, cooler air from over the oceans to take its place. This process is reversed at night when air above the land cools more rapidly than air above the planet's oceans.
Wind patterns and atmospheric currents are formed on a global scale because air near the planet's equator is heated more rapidly than the air found in polar regions. Global wind patterns include trade winds as well the jet stream, a river of air that forms a boundary between polar air masses and the warmer air found closer to the equator.Learn more about Atmosphere
Earth’s atmosphere protects life on the surface by filtering deadly ultraviolet radiation, destroying most meteors that pass through it and retaining heat. The atmosphere also provides oxygen to humans and carbon dioxide to plants.Full Answer >
The uneven heating of the Earth's surface creates hot and cold spots, creating the potential for convective currents. Air above a warm spot rises, creating a low pressure zone near the surface. Colder, denser air near the surface in a higher pressure zone then flows in, creating wind.Full Answer >
Weather is caused by uneven heating on the surface of the Earth, which results in atmospheric change. Differences in temperature are caused by the Sun heating parts of the Earth more than others. Clouds, rain and winds are all caused by these temperature differences.Full Answer >
The northern lights are created when a cloud of gas, also called a coronal mass ejection, explodes from the sun and collides with Earth's magnetic field. This collision creates charged particles, which interact with the gases in the upper atmosphere, creating the colorful northern lights.Full Answer >