Earth and Space Sciences Plate Tectonics Year 9 Earth and Space sciences: The theory of plate tectonics explains global patterns of geological activity and continental movement (ACSSU180) Science as Human Endeavour Scientific models, theories, processes, applications (ACSHE157). Technological advances through science (ACSHE158) Use of science in improving people’s lives, generating new careers, and meeting societal needs. (ACSHE161) Use science to evaluate claims or predictions (ACSHE160) Values of society influence research (ACSHE228) Scientific Inquiry Processes Formulate questions or hypotheses to investigate. (ACSIS164) Plan, select and use appropriate investigation methods e.g. field and laboratory work. (ACSIS165) Select and use appropriate equipment, to systematically collect and record data (ACSIS166) Analyse patterns and trends in processing data e.g. relationships between variables (ACSIS169) Use knowledge of scientific concepts to draw conclusions that are consistent with evidence (ACSIS170) Evaluate conclusions, including possible alternative explanations. (ACSIS171) Critically analyse the validity of information in secondary sources and evaluate the approaches used to solve problems (ACSIS172) Communicate scientific ideas and information, including using appropriate scientific language. (ACSIS174) Knowledge and Understandings Plate tectonics Marine fossils can be found in the rocks of mountainous regions indicating that the land was once under water. The formation of mountains and fossils could be related to the cooling of the Earth. This can also be related to the movement of the continents or continental drift. The earth's crust consists of a number of plates that are constantly moving. This means that new surface rocks are continually being formed. The moving of crustal plates is associated with volcanoes and earthquakes. Heat from the outer core causes convection currents in the mantle resulting in the movement of the crustal plates. The continental plates consist of huge masses of lighter rock that float on the denser mantle rock. The oceanic plates consist of rock that is more dense but still able to float on the mantle. Learning Program Plate tectonics Purpose: Students understand how the movement of plate tectonics change the geography of the Earth and create certain geographical formations. Inform – Motivation: Have you ever travelled to inland areas where sea shells and the remains of other marine creatures can be found? These remains are often found in cliffs and very dry areas such as the opal fields in South Australia. How would you guess that these fossilised remains came to be in these areas? What does this action tell us about the movement of the Earth's surface? The crust of the Earth is constantly moving. Find out what is meant by the terms 'continental drift', 'crustal plates' and 'the theory of plate tectonics' Examine Figure 6.2 on page 28 Science Outcomes Book 3. Describe what this figure illustrates. Research: Research what causes the plate movements on the Earth's surface. Compare the structure and features of continental and oceanic plates. Refer to pages 29-34, Science Outcomes Book 3. Prepare a report on the types of movement of plates- colliding, separating and sliding past. Refer to diagrams to describe the location, resulting changes and examples of these forms of plate movement. Include a description of the movements of the continents in your report. Carry out the activity on page 34 Science Outcomes Book 3. Summary questions 1-3, Interpretation questions 2, 3, Thinking About questions 1, 2, Investigating questions 1-3, page 35 Science Outcomes Book 3. © Education Research Solutions T: 1300 669 810 E: contactus@educationresearch.com.au W: www.educationresearch.com.au This is an ERS plan and is NOT endorsed by ACARA. Green font is ACARA sourced materials. Go to: http://www.australiancurriculum.edu.au * © Education Services Australia Plate Tectonics Students will identify the three layers of the earth: core, mantle and crust and demonstrate knowledge of the concepts of convergent and divergent motions of the earth. The Indian and the Eurasian continental plates are in collision. Rocks between the two plates are forced upwards to form the Himalayan mountain chain. When an oceanic plate is in collision with a continental plate the oceanic plate is forced beneath the continental plate. This is called subduction and it occurs in a subduction zone. Separation zones are where plates are moving apart. Separation of oceanic plates occurs along the mid-ocean ridges. In some areas of the world plates are moving past each other. The movement occurs along fault lines. Along time ago the present continents were joined together. As a super continent called Pangaea. The movement of the crust led to the formation of two continents called Gondwana and Laurasia. Investigate: Moving Earth investigation: 3 pieces of different coloured sponge rubber 10 cm x 30 cm, 2 thin strips of polystyrene foam 6.0 cm x 30 cm, 3 different coloured plasticine strips, 2 sheets of paper, talc powder. Procedure: Place one hand on each end of a flat piece of paper. Push the hands towards each other. What do you observe? Grasp a piece of polystyrene at each end and stretch it outwards. What happened? Weaken the sheet with a row of pin holes across it and repeat the action. Why did the sheet break at that point? Weaken the other sheet and apply a compression force by pushing from both ends. Compare the results from these two actions. Place three strips of different coloured foam one on top of each other. Which layer of foam represents the layer of oldest rock? The youngest layer of rock? Fold the layers in the ways shown in the diagrams. What happens to the youngest layer in each case? Which layer is on the bottom in the last example? Place three layers of different coloured plasticine one on top of each other. Sprinkle talc powder between each layer to prevent them from sticking together. Remember the order in which you laid them. Fold the layers in any way that you wish but remember how many folds you make. Cut the ends off the layers so that the order of folding can not be seen. Challenge another group to determine how the layers were folded. Image a volcano has formed. Push a pencil up through the folds from the below until a bulge appears on the surface. Fill the pencil hole with different coloured plasticine. Questions: What is the result of applying forces to brittle rocks? Compare this result with what happened when a force was applied to a more flexible rock. Use diagrams to show the direction of the forces acting and the movement that occurs in a normal fault, a reverse fault, a lateral fault, a step fault, a horst and the formation of a rift valley. Modelling Plate Tectonics Activity: Students investigate the four different ways tectonic plates interact at their boundaries. Using simple available materials, they create models to simulate these interactions present at plate boundaries. Generalize Plate Tectonics: Movin’ and Shakin’ Lesson Plan: Students are introduced to the causes of plate movements and the hazards they present. They plot the location of 50 earthquakes and 50 volcanic eruptions on a map and explore the relationships between plate tectonics, earthquakes, and volcanoes. In the final activity, they test the effect of volcanic gases on the growth of plants. L10327 Tectonics investigator: plate movement: assessment Learning Object Education Services Australia The Le@rning Federation Test your understanding of tectonic plate movement. Use animations and images to help you answer a series of questions dealing with evidence of plate movement. Interpret data from magnetic surveys of divergent zones, as well as patterns derived from hotspot traces. View and print a report on your © Education Research Solutions T: 1300 669 810 E: contactus@educationresearch.com.au W: www.educationresearch.com.au This is an ERS plan and is NOT endorsed by ACARA. Green font is ACARA sourced materials. Go to: http://www.australiancurriculum.edu.au * © Education Services Australia work. This assessment object is one in a series of two objects. * http://www.scootle.edu.au/ec/objectLink.action?action=content&id=L10327 Assessment: Perform a simulation of plate tectonics Standards http://www.australiancurriculum.edu.au/Science/Curriculum/F-10?y=9&s=SU&s=HE&s=IS&layout=1 Teacher Resources IWB T Earth Science Website with a large menu of useful information The ABCs of Plate Tectonics Earth's Continental Plates Earthquakes & Plate Tectonics Earth Floor: Plate Tectonics This Dynamic Earth Volcanoes Online: Plate Tectonics games, lessons and links. Student Resources IWB S Plate Tectonics Interactive student activities Geography World - Plate Tectonics/Continental Drift Flashcards, matching, and word search games - plate tectonics. © Education Research Solutions T: 1300 669 810 E: contactus@educationresearch.com.au W: www.educationresearch.com.au This is an ERS plan and is NOT endorsed by ACARA. Green font is ACARA sourced materials. Go to: http://www.australiancurriculum.edu.au * © Education Services Australia Lesson Planner Lesson Teacher Notes Student Activities Resources Title: 1 Date Time Title: 2 Date Time Title: 3 Date Time Title: 4 Date Time Title: 5 Date Time © Education Research Solutions T: 1300 669 810 E: contactus@educationresearch.com.au W: www.educationresearch.com.au This is an ERS plan and is NOT endorsed by ACARA. Green font is ACARA sourced materials. Go to: http://www.australiancurriculum.edu.au * © Education Services Australia