Dynamic Earth Interactive Web Quest PDF
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Neel
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This document is an interactive web quest about plate tectonics and geology. It includes questions and activities to guide students through the material.
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Name: Neel Dynamic Earth Interactive Web Quest irections: Go to Google Classroom to access thelink or type in D https://www.learner.org/wp-content/interactive/dynamicearth/drift.html 1.) R ead theIntroduction. Then click on the red arrow...
Name: Neel Dynamic Earth Interactive Web Quest irections: Go to Google Classroom to access thelink or type in D https://www.learner.org/wp-content/interactive/dynamicearth/drift.html 1.) R ead theIntroduction. Then click on the red arrowwhere it saysStart your exploration withPlate Tectonics(tab located at the top of thepage). 2.) Follow the directions on theP late Tectonicspage. Read the information on the page and then click on How Do We Know This? a. What evidence did Alfred Wegner discover along the coastlines of continents? i. He studied the coastlines along Africa and South America looked like they might fit together ii. He also discovered that the same plants and animal fossils can be found on the coasts of both continents, although oceans separated them iii. He also noticed that the geologic formations of the two continents match up b. What isPangaea? i. Pangaea is a Greek word that means “all the earth”. According to Wegner he believed that earth was once a large land mass and over time it split apart. The different landmasses, or continents, then drifted to their current locations on the globe. c. What is thetheory ofplate tectonics? i. The theory of plate tectonics states that 1. Earth's outer layer, or lithosphere, is broken into several large slabs called plates. 2. These plates, which hold the continents and oceans, are slowly but constantly moving around the planet. 3. The movement of the plates not only supports our understanding that continents are not fixed and moved over time, but also explains how and why earthquakes, volcanoes, and other geologic events occur. 3.) L ocate the red arrow at the bottom of the page and click onContinents Over Time. Follow the directions on the next page and complete the activity. COMPLETED 4.) Move on to the next chapter,P late Boundaries, tolearn how plates interact. Carefully read the entire page and answer the following questions as you read: a. Are the earth’s continents constantly moving? Why? i. Yes, Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth's crust. b. Fill in the chart below. Type of Plate Boundary Draw 2 arrows to What is it and provide an represent example Convergent boundaries are when two plates come Convergent together The boundary between the Eurasian Plate and the Indian Plate at the Himalayas A divergent boundary occurs when two tectonic plates Divergent move away from each other. The boundary between the African Plate and the Arabian Plate in the Red Sea Transform boundaries are places where plates slide Transform s ideways past each other. The boundary between the Pacific Plate and the Australian Plate, crossing New Zealand 5.) Use the map at the bottom of the page to see where the three types of plate boundaries are found throughout the world. COMPLETED 6.) Locate the red arrow at the bottom of the page and click onP lates & Boundaries Challenge. Complete the challenge. COMPLETED 7.) Read theSlip, Slide, & Collidepage and answer thefollowing question: a. Give examples of geological phenomena we experience on Earth that are caused by the s lipping, sliding, and colliding of tectonic plates. i. Himalayan mountains grow taller every year - Plate Collision, Indian and Eurasian plate ii. Mid Ocean Ridges - At divergent boundaries, plates move apart and magma from the mantle rises to fill up the gap iii. Earthquakes/Volcanoes - Tectonic plates slipping 8.) Locate the red arrow at the bottom of the page and click onSee what happens at different plate boundaries. Read and view the diagrams. Plates in Motion Impacts W hat will happen if two continental plates collide? Continent - Continent Collision → Because the rock making up continental plates is generally lighter and less ense than oceanic rock, it is too light to get pulled under the earth and turned into magma. Instead, a d collision between two continental plates crunches and folds the rock at the boundary, lifting it up and leading to the formation of mountains and mountain ranges. Example: T he Himalayan range in southern Asia - This process began after the breakup of Pangaea, when India became an island continent and began traveling northward toward Asia. The island of India slammed into Asia about 40 to 50 million years ago near modern-day Tibet, crushing and folding the plates to form the Himalayan mountain range. Indian Plate is continuing its northward movement into Asia, Himalayas continue grow higher each year by 5 to 20 mm or 1 inch per year. W hat will happen if a continental plate collides with an oceanic plate? Continent - Oceanic Crust Collision → Oceanic crust tends to be denser and thinner than continental crust T his means that the denser oceanic crust gets bent and pulled under, or subducted, beneath the lighter and thicker continental crust. This forms what is called asubduction zone. As the oceanic crust sinks, a deep oceanic trench/valley, is formed at the edge of the continent. T he crust continues to be forced deeper into the earth, where high heat and pressure cause trapped water and other gasses to be released from it. This, in turn, makes the base of the crust melt, forming magma Example: Band of active volcanoes that encircle the Pacific Ocean, often referred to as the Ring of Fire. W hat will happen if two oceanic plates collide? ceanic - Oceanic Collision →A subduction zone isalso generated when two oceanic plates collide — O the older plate is forced under the younger one — and it leads to the formation of chains of volcanic islands known asisland arcs. Since the collisionand subduction of plates is not a smooth process, large, powerful earthquakes are another phenomenon that result from this type of interaction. Earthquakes generated in a subduction zone can also give rise to tsunamis. Example: T he Mariana Islands in the western Pacific Ocean The Aleutian Islands, off the coast of Alaska What is a Subduction Zone? Provide an example and describe what happens here, and provide a diagram. subduction zone is generated when two oceanic plates collide — the older plate is forced under the A younger one — and it leads to the formation of chains of volcanic islands known asisland arcs. Oceanic crust tends to be denser and thinner than continental crust his means that the denser oceanic crust gets bent and pulled under, or subducted, beneath the T lighter and thicker continental crust. This forms what is called asubduction zone.
