https://padlet.com/1413096/8khqvx0zxte5efsq Made by Jodee en-us 2022-01-15 00:21:16 UTC 2024-10-15 03:20:55 UTC hello@padlet.com 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993157697 2022-01-15 00:25:04 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993157697 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993686929 References: BC Science 8 Textbook and 4.1 Notes

]]> 2022-01-15 17:49:37 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993686929 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993691363 German scientist Alfred Wegner proposed a theory that all the continents on Earth were once connected millions of years ago and called it 'Pangea'. He found that the continents fit like a puzzle and even found evidence to support his claim
References: BC Science 8 Textbook and 4.1 Notes


]]> 2022-01-15 17:57:46 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993691363 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993729770 Identical plant and animal fossils were found on several different continents and some of those fossils were not supposed to be there because it wasn't possible for the animal/plant to live in that area. 
He found glacial deposits in hot places where ice can't form, and also found that some mountain ranges matched up, indicating they were once together.
References: BC Science 8 Textbook and 4.1 Notes]]> 2022-01-15 19:06:21 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1993729770 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1994850694 Geologist Harry Hess suggested that new ocean crust is being made at mid-ocean-ridges and plate tectonics are moving away from each other in a proccess called sea-floor spreading. 
References: 4.1 Notes]]> 2022-01-17 00:59:33 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/1994850694 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2005747390 The proccess begins when there's a rift/crack at the center of the valley in the mid-ocean ridge and magma from inside the Earth rises to fill in the crack. Then the magma cools and hardens into new rock, pushing older rock away from the ridge. This led to the understanding of how continents can move because they can be carried by the ocean floor widening during sea-floor spreading. This also provided support to Alfred's continental drift theory.
Reference: Mr. Chong's 4.1 notes]]> 2022-01-21 20:14:21 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2005747390 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2005860581 Scientists study the energy waves during earthquakes to infer about the different layers of the Earth. The speed and behaviour of the waves are affected by the materials they pass through. 
References: 4.1 Notes]]> 2022-01-21 22:12:29 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2005860581 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2005864961 Crust: A thin layer of rock surrounding the Earth. The oceanic crust is thinner and mostly basalt while the continental crust is mostly granite. 
Upper Mantle: The top part of the upper mantle is solid, but the bottom part is made of rock that is soft-like taffy and can flow. 
Lower Mantle: It's denser and has more solid material than the upper mantle.
Outer Core: The only layer that is liquid.
Inner Core: It's the deepest and hottest layer and it's solid because of the extreme pressure it's under in.
References: 4.1 Notes

]]> 2022-01-21 22:18:03 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2005864961 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006090904 References: BC Science 8 Textbook and 4.2 notes]]> 2022-01-22 04:59:04 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006090904 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006599072 Tectonic plates can move in different directions at different rates. When plates interact at their edges, they're called plate boundaries. There are three types of plate boundaries:]]> 2022-01-22 18:49:22 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006599072 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006601490 Divergent Plate Boundaries: Tectonic plates move apart in these boundaries during sea-floor spreading. This process can also happen in the middle of contients, which is known as continental rifting. 
Convergent Plate Boundaries:Tectonic plates collide in a proccess called subduction. Subduction is a proccess where a denser crust goes below a less dense crust and causes deep sea trenches, volcanoes, and mountains to form. Earthquakes also happen in these boundaries. 
Transform Plate Boundaries: Tectonic Plates slide past each horizontally, and earthquakes are also common in these boundaries.]]> 2022-01-22 18:53:24 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006601490 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006758042 Energy from radiocative decay of some elements in the Earth's interior and from the core, heat up parts of the mantle. Warmer, less dense material rises, and cooler, denser material, sinks. This causes very large convection currents within the mantle, called mantle convection. As the material moves, it drags the tectonic plates along with it. There are 2 important processes of mantle convection.]]> 2022-01-23 00:41:22 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2006758042 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007435193 Slab pull happens at convergent boundaries. It's the pulling of a tectonic plate due to gravity and suduction. As the leading edge of the plate sunks, it pulls the rest of the plate with it, almost like a conveyer belt. ]]> 2022-01-23 18:36:05 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007435193 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007437269 Ridge push lifts the lithosphere and pushes tectonic plates apart at divergent plate boundaries. The old material gets pushed aside by new material, which pushes the plates apart, and rising material spreads out as it reaches the upper mantle. ]]> 2022-01-23 18:38:23 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007437269 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007443565 References: BC Science 8 Textbook and 4.3 notes]]> 2022-01-23 18:45:14 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007443565 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007508721 The movements in the Earth's crust can squeeze, stretch, or twist, which applies pressure to the rock. When too much pressure is applied, a break in the crust (called a fault) occurs, and the stored energy is released as an earthquake. ]]> 2022-01-23 20:02:58 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007508721 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007510225 There are 3 different types of faults:
Reverse Fault: It forms when rocks are squeezed together and one block overlaps another block. and the crust is shortened horizontally. 
Normal Fault: Normal faults form when rocks are pulled apart and one block slips downward, and the crust is lengthened.
Strike-Slip Fault:It forms when blocks of rock move past each other horizontally. ]]> 2022-01-23 20:04:46 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007510225 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007518363 The release of energy from earthquakes can cause vibrations called seismic waves, and there are 3 types:
Primary Waves (P Waves):
These waves move the fastest and are usually the first ones detected in an earthquake. They can cause rock particles to move forward and backwards, and can travel through liquids and solids.
Secondary Waves (S Waves):
These waves move slower than P waves and cause rock particles to move up and down. However, they can only travel through solids.
Surface Waves (L Waves):
These waves are the slowest among the three waves but often cause the greatest damage. They can only travel along the surface of the Earth and cause rock particles to move up, down, and side to side.]]> 2022-01-23 20:15:27 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2007518363 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009544627 Mountain ranges can form when two plates of continental crust collide. Since continental crusts are not easily subducted, the impact can cause a large area to be pushed up, forming mountains. ]]> 2022-01-24 18:44:15 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009544627 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009552915 Volcanoes are an opening in the Earth’s surface where magma and other materials are released. Most volcanoes occur at convergent boundaries when oceanic crust collide with another plate. ]]> 2022-01-24 18:47:42 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009552915 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009561999 This is when an oceanic crust collides with another oceanic crust. A denser plate subducts a less dense plate and an oceanic trench forms. Magma rises to the upper plate and some lava is released onto the surface. Overtime, erupted lava and ash build up and form volcanic islands. ]]> 2022-01-24 18:51:55 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009561999 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009577712 This is when an oceanic crust has collided with a continental crust. Volcanoes form on the surface of the continental crust and magma can rise to the surface, causing an eruption. ]]> 2022-01-24 18:58:28 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009577712 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009586793 Hot spots are hot, fixated regions of the Earth’s mantle where magma rises to the surface and break through the weak parts of the lithosphere. Tectonic plates move over those hot spots and form volcanoes from magma rising and melting through the crust. ]]> 2022-01-24 19:02:28 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2009586793 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2012046816 Tectonic plates are huge slabs of rock (plates) that make up the Earth’s surface. Most tectonic plates are oceanic and continental crust, but some are ONLY oceanic crust.
References: 4.1 Notes]]> 2022-01-25 19:21:07 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2012046816 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2012055807 Lithosphere: The Earth’s lithosphere is composed of crust and parts of the upper mantle, and consists of tectonic plates. 
Asthenosphere: Tectonic plates move and float slowly on the Asthenosphere. The Asthenosphere is a layer that’s made up of extremely hot material. It enables the plates to move because the hot material can flow (like toothpaste)
References: 4.1 Notes

]]> 2022-01-25 19:25:20 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2012055807 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2014262472 Seismic waves are measured by a device called a seismograph. Seismographs detects ground motion and records a signal. The information taken from seismographs are used to determine the strength and location of the earthquake. 
Magnitude: Magnitudes are numbers that represent the strength of an earthquake, and it uses the Richter scale. ]]> 2022-01-26 18:38:58 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2014262472 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2014314706 https://www.nationalgeographic.org/media/plate-tectonics/
This video from national geographic can help further explain the theory of tectonic plates. ]]> 2022-01-26 19:01:24 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2014314706 1413096 https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2014350155 2022-01-26 19:17:17 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2014350155 pcchong https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2024101036 Learning Outcomes -5
Ideas - 4.5
Communication - 5
Effort - 5

19.5/20

Amazing Job!

If you want additional feedback, please come see me.

]]> 2022-02-01 19:16:19 UTC https://padlet.com/1413096/8khqvx0zxte5efsq/wish/2024101036