Science Portfolio Presentation - Insulation
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ihslThe document describes an experimental design lab report that tested how insulators affect temperature. The experiment tested sand, cotton, and air as insulators by measuring the temperature change of each over time. The hypothesis was that sand would be the best insulator. The results showed that sand had the lowest average temperature change of 4.67°C, supporting the hypothesis that it was the best insulator compared to air and cotton.
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The document discusses plate tectonics and describes how the Earth's lithosphere is broken into tectonic plates that move over time. It explains that there are two main types of plates - oceanic plates composed mostly of basalt beneath the oceans, and continental plates composed mostly of granite located on land. There are about 16 major tectonic plates that are in constant slow motion, generating geological events like mountain building and volcanism at their boundaries. Alfred Wegener originally proposed the theory of continental drift that recognized plates moved over time.
Nouman Ijaz Divergent Boundary Powerpoint
The document discusses tectonic plates and divergent plate boundaries. It explains that tectonic plates are large, solid pieces of Earth's lithosphere or crust. When two plates move apart at a divergent boundary, new crust is formed by magma from the mantle welling up between the separating plates. There are two main types of divergent boundaries - oceanic-oceanic boundaries which form undersea mountain ridges, and continental-continental boundaries which form rift valleys as the continents move apart.
Photographic evidence Joanne
This document provides information about different types of plate boundaries including convergent, divergent, and transform boundaries. It describes how each boundary forms different geological features like mountains, trenches, and faults. It also discusses earthquakes, seismic waves, tsunamis, volcanoes, and the structure of the Earth's interior.
Continental drift- Yalizet
The document summarizes the theory of continental drift, which was proposed by Alfred Wegener in 1912. It explains that the continents move across the ocean bed due to shifting tectonic plates at a rate of 1 to 10 cm per year. This movement of plates causes volcanic and seismic activity at plate boundaries. The document also discusses Pangaea, a supercontinent that existed 300 million years ago before breaking apart over 100 million years.
Convection currents - Yalizet
Convection currents in the Earth's interior are thought to cause folding and mountain building by dragging tectonic plates. Convection currents are driven by heat from the Earth's core and radioactive decay in the mantle and crust. Mapping of rock formations and magnetic reversals at ocean ridges provides evidence that supports plate tectonics and convection currents driving the movement of plates.
Convection currents
Convection currents in the Earth's interior are thought to cause folding and mountain building by dragging tectonic plates. Convection currents are driven by heat from the Earth's core, radioactive decay in the mantle and crust, and cooling of the mantle. Mapping of rock formations and magnetic reversals at ocean ridges provided evidence that supports plate tectonics and convection currents driving the movement of plates.
Subduction zone
Subduction zones occur at convergent plate boundaries where one tectonic plate slides under another plate. There are two types of lithosphere - oceanic and continental - and subduction zones can involve either oceanic-oceanic convergence, oceanic-continental convergence, or continental-continental convergence. Subduction zones are where one plate is pushed down into the mantle as it slides under the edge of another plate.
Photographic evidence - Plate Tectonics
The Himalaya mountain is the highest in the world and contains Mount Everest, the tallest peak. Mount Everest was first climbed in 1953 and both it and the Himalayas were formed at a convergent plate boundary when Earth plates moved toward each other, causing the land to be pushed up and creating the massive mountain range.
Tsunami - Elshaima
A tsunami is a series of huge waves caused by earthquakes or volcanic eruptions under the sea. While tsunamis appear to be only 3 feet tall in water, they can travel very quickly at over 600 mph and destroy entire coastal cities when they make landfall. The size and speed of tsunamis makes them extremely dangerous when they hit land.
Subduction zone - Elshaima
Subduction zones occur at convergent plate boundaries where one tectonic plate slides under another plate. There are two types of lithosphere - oceanic and continental - and subduction can happen between oceanic-oceanic plates, oceanic-continental plates, or continental-continental plates. When two plates converge, one plate will subduct below the other at a boundary called a subduction zone.
Seismic waves - Elshaima
There are three main types of seismic waves: P waves, S waves, and L waves. P waves are the first to arrive and move side to side, while S waves follow and move up and down. L waves, also known as surface waves, are the largest and come last, moving in a circular motion. Seismic waves are caused by the breaking of rock in earth's plates and are recorded by seismographs.
Continental drift - Elshaima
The document discusses the theory of continental drift, which was discovered by Alfred Wagner and proposes that the Earth's continents were once joined together in a supercontinent called Pangaea. The theory is supported by three main clues: geological evidence of matching rock layers across continents, evidence of changing climates in the distant past, and the discovery of the same fossils in different continents.
Mountain building - Elshaima
There are four main types of mountains: dome mountains which form when magma pushes up from below the surface; volcanic mountains, which are extinct volcanoes; folded mountains, where pressure from the sides folds and uplifts rock layers; and fault block mountains, where the movement of geological faults causes blocks of land to be uplifted.
Plate boundaries - Ping Tian
Plate boundaries are the borders between sections of the Earth's crust called tectonic plates. These boundaries can separate plates, causing land masses to break apart into smaller pieces over time. There are currently seven major tectonic plates that make up the Earth's land.
Fault - Ping Tian
The document defines three types of faults: normal faults where one land moves down, reverse faults where one land moves up, and strike-slip faults where lands move sideways relative to each other. It also asks and answers three questions: there are three kinds of faults, they are named normal, reverse, and strike-slip faults, and a fault is a break in the ground where land moves.
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Mysore WhatsApp group:- https://chat.whatsapp.com/EhqtHtCC75vCAX7gaO842N
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