Determining The Rate Of Ocean Floor Spreading Worksheet Answers

The pacific ocean basin s spreading rate is 8 0 cm yr.

Determining the rate of ocean floor spreading worksheet answers. Use the above equation to calculate spreading rate. 1cm yr to 10 cm yr. The numbers give the ages in millions of years for the rocks on the ocean floor located along the lines. Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean ridge.

Part 1 studies spreading of plates from a mid ocean ridge. Sea floor spreading answer key. This worksheet has 2 multiple choice 7 fill in the blank and 5 short answer questions. This sea floor spreading worksheet is suitable for 6th 10th grade.

Evidence of sea floor spreading. For background go to the basics page on plate tectonics paleomagnetism. Some are spreading apart at the same rate that your fingernails grow. In this plate tectonics worksheet students review mid ocean ridges sea floor spreading subduction and convection currents.

Displaying top 8 worksheets found for sea floor spreading answer key. E the color band widths are approximately equal then 112 of this answer is the average rate at which the south american plate is moving west and the african plate is moving east. The diagram on the next page represents a section of the ocean floor in the north atlantic. If the plates are moving apart symmetrically at the same rate i.

Go further the fastest spreading rate is the northern part of. Student answers however may vary here somewhat depending on the sea floor strip they use. No large basins such as the pacific ocean basin are spreading at various rates along their spreading ridges. The average spreading rate in the atlantic is around 2 cm yr.

There are three parts to this lab. Express your average spreading rate answer for problem 3 in terms of cm per year. Determine the length of time that the plate has been moving 65 million years 65 000 000 years 6 5 10 7 years. R d t or r 9 5 10 7 cm 6 5 10 7 years 1 46 cm yr.

It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. Calculate the age of crust from its distance from where it originated. It is possible to calculate the spreading rate of one side of a mid ocean ridge by dividing distance by time distance time rate. Answers vary based on students ages and calculated rates but answers should be calculated by multiplying the rate from 9 by age.

This is a mid ocean ridge. This creates new ocean crust. The north atlantic ocean basin s spreading rate is 3 7 cm yr. In geologic time this is very fast.

When completing the worksheet you will analyze magnetic profiles of the ocean floor. Seafloor spreading atlantic ocean. Some of the worksheets for this concept are sea floor spreading work inside earth work name date sea floor spreading l 1 2 3 a model of seafloor spreading sea floor spreading sea floor spreading modeling sea floor spreading chapter 8 plate tectonics. Seafloor spreading is happening at b.

Ranges of spreading throughout the world s oceans. In this activity you will observe the pattern and learn to calculate the rate of sea floor spreading.