The Distance Between Us And Them Sea Floor Spreading

The distance between us and them.

The distance between us and them sea floor spreading.

Answers vary depending upon the strip of ocean students choose. In their cooperative groups have student groups list three things they have learned by completing this activity on an 11 x17 poster. Using a strip map of the north atlantic seafloor they will measure distances and note the ages of the strips of. Sea floor spreading in the atlantic ocean c01 page 3 c01 1.

Sea floor spreading in the atlantic ocean. According to this theory the floor of the ocean is moving or spreading away from ridges by repetitive magma intrusion that split and spread the older sea floor causing them to be moved away from the ridge in a nearly continuous horizontal position. Seafloor spreading theory that oceanic crust forms along submarine mountain zones known collectively as the mid ocean ridge system and spreads out laterally away from them. Have each group explain what they learned to the class.

To determine the rate of spreading in centimeters per year for each ocean basin convert the distance the basin has opened from kilometers. Sea floor spreading in the atlantic ocean 1. The corner stone of plate tectonics is the theory of sea floor spreading. Activity 3 7b www calculating the rate of seafloor spreading when the distance that an ocean basin has opened and the time it took for it to open are known the rate of seafloor spreading can be calculated.

Basalt the once molten rock that makes up most new oceanic crust is a fairly magnetic substance and scientists began using magnetometers to measure the magnetism of the ocean floor in the 1950s what they discovered was that the magnetism of the ocean floor around. Young scholars examine how geologists determine rates of sea floor spreading between two tectonic plates. The distance between us and them. The distance between us and them.

North atlantic ocean 2. This the distance between us and them. In this activity students will gain an understanding of how geologists determine rates of sea floor spreading between two tectonic plates. They apply mathematical concepts such as the calculation and use of velocities and conversion from one set of units to another.

Sea floor spreading in the atlantic ocean lesson plan is suitable for 6th 12th grade. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid ocean ridge is the spreading half rate and is equal to half of the spreading rate. Regularly and thoroughly clean your hands with an alcohol based hand rub or wash them with soap and water. The magnetism of mid ocean ridges helped scientists first identify the process of seafloor spreading in the early 20th century.

This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. Because students choose different study sites their answers will vary but should fall within the range of a 9 12km my half rate.