Search results for “circulation”

The function of the heart

The heart is the engine of the blood circulation. It supplies every cell in our body with oxygen and nutrients and removes end products of metabolism. The heart pumps approximately 8,000 to 10,000 liters of blood through the body per day. Author: ZDF/3sat/nano/Südkino F i l m p r o d u c t i o n Gm

Earth System: El Nino's Influence on Hurricane Formation

Warm water fuels the tropical storms that ultimately form hurricanes. In this video segment adapted from NASA's Goddard Space Flight Center, learn how El Niño events—climatic anomalies that occur periodically in the Pacific Ocean—alter the course of atmospheric circulation and lessen hurricane forma

The Coriolis Effect Due to Earth's Rotation

Learn how Earth’s rotation causes the Coriolis effect, with this video from NOVA. Use this resource to visualize the abstract concept of the Coriolis effect and to provide opportunities for students to use evidence to support a claim about the influence of the Coriolis effect on hurricanes, jet stre

Earth System: Drought and Air Quality

Droughts claim more victims each year than any other natural disaster. Depending on where it occurs and how long it persists, the cost of a drought can run into the billions of dollars. Droughts cause more than economic hardship, however. As this video segment adapted from NASA's Goddard Space Fligh

Earth System: El Nino

The climatic phenomenon known as El Niño is a disruption of the ocean-atmosphere system in the tropical Pacific that impacts weather and climate around the globe. An El Niño occurs every four to twelve years, causes die-offs of plankton and fish, and affects Pacific jet-stream winds, altering storm

Jupiter's Hot Spots | NASA Planetary Sciences

Discover dark features in Jupiter's atmosphere called "hot spots," and their connection to large-scale atmospheric waves. David Choi describes his research on hot spots clearings in Jupiter's atmosphere that appear bright in infrared light. Analysis of data from the Cassini mission in 2000 reveal ho

This is how respiration works

Every human being breathes in and out continuously. We suck air through the trachea into the lungs via the nose or mouth. Through vascular walls, oxygen can be absorbed into the blood and flows into the circulation with every heartbeat. Author: ZDF/scobel/xkopp/Daniel Sich/Maximilian Mohr Translat

What function do heart valves have

The healthy heart has two atria and two ventricles. The atria collect the blood. The larger heart chambers, the ventricles, suck up the blood and then return it to the cardiopulmonary circulation. Author: ZDF/3sat/nano/Südkino Filmproduktion GmbH/Berndt Welz/Hannah Dewies/Tim Sprado/Jochen Schmidt