Jet streams are areas of high winds that flow in a westerly direction on Earth. Occurring about 7 miles above the surface of the Earth, the jet streams do not take a consistent path because the flow of wind moves about s... More » Science Earth Science Atmosphere

The jet stream is a narrow band of fast-moving air above the Earth’s surface at a height of 10 to 15 kilometers. These winds blow in a westerly direction and are responsible for weather phenomena. There are two jet strea... More » Science Weather & Tides

Jet streams, which are rapidly moving ribbons of air 6 to 9 miles above the Earth, influence the weather by separating warm and cold air and pushing weather systems around the globe. The movement of a jet stream affects ... More »

Laminar and turbulent flows are the two major forms of fluid flow, with laminar flow being an orderly flow with all the fluid molecules moving parallel in the direction of flow, whereas in turbulent flow, different strea... More »

Wind is the flow of air above the surface of the Earth in an approximate horizontal direction. Wind is named according to the direction it comes from, so a west wind blows from the west to the east. More »

The most common wind direction in the United States is from the south, based upon data collected from 300 National Weather Service stations. Prevailing winds are defined as the most frequent wind direction observed in on... More »

Gravity does almost no work on a bowling ball rolling along an alley because the ball is not moving in the direction of gravity. Work, as defined by physics, is a function of both force and distance traveled in the direc... More »