PPT-Chapter 25 Electric Currents and Resistance

No Class on Wednesday March 8 Labs taught by Dr Mahes on Monday and Tuesday No quiz on Friday March 10 Exam 2 on Friday March 24 study guide posted online Current from a battery flows steadily in one direction direct current DC Current from a power plant varies sinusoidally alternating current AC. Early ocean studies. For much of human history, knowledge of the ocean and its currents was not recorded for many reasons - most sailors could not write and information was passed orally.. European nations began systematic ocean explorations but kept information secret between the 15. Vocabulary. Ocean Current. Coriolis Effect. Rip Current. Upwelling. Major Ocean Currents. An . Ocean Current. is a large volume of water flowing in a certain direction.. Wind-driven currents are called surface currents.. We offer the widest selection of horse fencing, electric fences, polytapes, energizers, polyrope, fencing accessories and other equine products. We offer the widest selection of horse fencing, electric fences, polytapes, energizers, polyrope, fencing accessories and other equine products. Physics 2415 Lecture 10. Michael Fowler, UVa. Today’s Topics. First we’ll finish capacitors. Then current electricity: frogs’ legs, etc.. The lithium ion battery. Circuits and currents: Ohm’s law. Currents Currents Subject Review The following questions are based on information from the Tutorial on Currents ( http://oceanservice.noaa.gov/education/kits/cur - rent s /welcome.html ). 1. The _ Wind-driven surface currents. Figure 7-4. Ocean Circulation Animation. Ocean Currents. Ocean currents- are stream-like movements of water. Ocean currents affect our weather and climate. 2 Types:. 1) Surface Currents. http. ://oceanexplorer.noaa.gov/edu/learning/player/lesson08.. html. . . I. . Ocean . currents = Stream like movements of water. A. Surface currents. = occur near or at the surface of the ocean. Can reach 100 m deep or deeper. 6. th. Grade Earth Science. Currents. A current is a large stream of water that flows through the ocean. . Two types of currents. Surface Currents Deep Currents. What is a current?. 1. An Ocean Current . is a directed, continuous movement of ocean water generated by various forces.. 2. Currents are caused by various factors:. Temperature. Different salinity levels. Created by Winds. Coriolis Effect- The shifting of ocean currents and surface winds from their expected paths caused by the rotation of the earth. Gulf Steam – ocean current in the northern Atlantic ocean, brings warm water from Africa to the Americas. Reading assignment. : Chapter . 27. Homework 27.1, due Monday, Feb. 27:. OQ1, 5, 14 . Homework 27.2, due Wednesday, March 1:. OQ3, OQ6, 15, 21, 25, 26, 31, 33, 39, 44, 48, 53. Begin . our study of charges . How do different currents form. What is upwelling. What do ocean currents transfer. Predict. T F. Ocean currents are always cold. C. ontinents affect the direction of currents. Currents only flow near the surface of the ocean. Static Electricity. Static Electricity-. accumulation of excess electric charges on an obj. pg. 194. Protons = + electrical charge. Electrons= - electrical charge . Example of electron transfer: .