NAME: DATE: PERIOD: SeaFloor Spreading Lab INTRODUCTION In the late 1950s, considerable research was conducted to nd a means of detecting large steel objects beneath the ocean surface (submarines).
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Filling out the Sea Floor Spreading Worksheet online can be a straightforward process with the right guidance. This document is designed to help users understand each section of the worksheet and provide clear instructions for completing it accurately.
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- Go to the introduction section of the worksheet. Read carefully to understand the background of sea-floor spreading and its significance in Earth Science.
- Proceed to the procedures section, where you will learn about creating a model of the Mid-Atlantic Ridge. Ensure you grasp the concepts before moving to the questions.
- Navigate to the data table. You will need to plot the provided AGE and LONGITUDE data points on a graph. Remember not to connect the dots and to use different colors to circle the N and S polarity dots.
- After plotting the data, complete the analysis and conclusion section. Answer each question with thorough explanations, referring back to the information provided in the introduction and procedure sections.
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How do you calculate sea floor spreading?
It is possible to calculate the spreading rate of one side of a mid-ocean ridge by dividing distance by time (Distance/Time = Rate). This is called a half-spreading rate. Multiply it by 2 to get the full spreading rate for both sides of the ridge.
How can we determine the rate at which the Atlantic Ocean is growing?
How Old Is the Atlantic Ocean? The rate at which the Atlantic Ocean floor formed and moved the continents apart can be calculated. Dividing the current distance between the two continents by the number of years they have been moving apart will tell how much wider the Atlantic Ocean has grown each year.
How does sea floor spreading occur?
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.
What are the three types of seafloor spreading?
There are three types of plate-plate interactions based upon relative motion: convergent, where plates collide, divergent, where plates separate, and transform motion, where plates simply slide past each other.
Where is active seafloor spreading occurring today?
Where is active sea floor spreading occurring today? Seafloor spreading is the movement of old rock that is being pushed by the new young oceanic crust. This would be a divergent since the plates are separating from each other. Active seafloor spreading is occurring at mid-ocean ridges.
In which direction does the ocean floor move in the process of sea floor spreading?
What is the process of sea-floor spreading? In sea-floor spreading, the sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added. As a result, the ocean floors move like conveyor belts, carrying the continents along with them.
What happens to old oceanic crust as new molten material rises from the mantle?
What happens to old oceanic crust as new molten material rises from the mantle? It is recycled back into the mantle through the process of subduction. The process of subduction also plays a role in the new molten material rising from the mantle (see page 132). 31.
How does seafloor spreading occur quizlet?
What is seafloor spreading? The process of molten material from the mantle being pushed upward to the surface of the earth and spreading apart creating new earth.
What is the evidence for sea floor spreading?
Several types of evidence supported Hess's theory of sea-floor spreading: eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves. This evidence led scientists to look again at Wegener's hypothesis of continental drift.
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