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Answer:
In science 10 Unit 1 module 1, activity 2, the title of the activity is “Let’s Mark the boundaries”. This activity talks about the geological features provides data for the scientist in dividing the earth’s lithosphere. It talks about the distribution of earthquake, active volcanoes, and mountain ranges as the major geological features formed along plate boundaries. Land masses will move in a certain direction in each type of plate boundary.
Here are the answers of the different questions in the activity.
Q5. Earthquake epicenter are scattered but are not randomly distributed over the earth’s surface. They tend to be concentrated in narrow zones along the plate boundaries boundaries.
Q6. Some are located near the edges of the Continents of western North and South America, some are in mid-continents, some surrounds the pacific ocean.
Q7. Large part of the pacific ocean, northernmost Asia, most areas in Europe, eastern region of North America and South America and Western Africa.
Q8. Identifying areas which are prone to earthquakes are important so that necessary precautions could be done to prevent loss of life and other casualties.
Q9. Volcanoes are not randomly distributed. Majority of them are found along the edges of western North and South America and also it surrounds the pacific ocean.
Q10. Majority are found along the edges, particularly in the western coast of North and South America. Some are located at East and South East Asia.
Q11. Eastern North and South America, Russia, in the middle of Australia, majority of Europe and Africa and Western Asia will not experience volcanic eruption.
Q12. All areas with volcanoes and mountain ranges have earthquake epicenter, but not all areas with earthquake epicenter have active volcanoes and mountain ranges.
Q13. Mountain ranges are situated in areas with volcanoes and earthquake epicenter are also located.
Q14. The distribution of earthquake epicenter, active volcanoes and mountain ranges are the basis of the scientist in dividing the Earth’s lithosphere.
Lithosphere
Is the rock portion of the earth. It is composed of the crust and the upper mantle which are both solid that are made up of rocks. Tectonic plate are also called as lithospheric plate.
Two Types of Lithospheric Plates
Oceanic Plate
Continental Plate
Oceanic Plate
Are thinner and have a higher density compared to continental plate. Examples are: Pacific plate, Antarctic Plate
Continental Plate
Thicker and have a lesser density compared to oceanic plate. Examples are: Eurasian plate, African plate, North American plate, South American plate, Australian plate.
Three Types of Plate boundary
Convergent Boundary
Divergent Boundary
Transform Fault Boundary
Convergent Boundary
Occurs when two plates moves towards each other. It can be continental to continental convergence, oceanic to oceanic convergence, continental to oceanic convergence. This is also the type of plate boundaries where all the geological features that serves as basis for the scientist in dividing the earth's lithosphere are present.
Divergent Boundary
Occurs when plates moves away from each other.
Transform Fault Boundary
Occurs when the plate slide past each other.
Three Geological Features that Serves as basis for the Scientist in Dividing the Earth's Lithosphere:
Earthquake
Volcanoes
Mountain Ranges
Earthquake
Slippage along the fault or the plate boundary, releases tremendous amount of energy which causes vibration on the surface of the Earth which is commonly known as Earthquake.
Volcanoes
Are formed along convergent boundaries wherein when two plates collide, denser plate will subduct beneath the other and move towards the mantle. When the subducted plate reaches the mantle, it melts and turns into a magma which rise up on the surface creating Volcanoes. Some volcanoes are formed on divergent boundary particularly on the mid-Atlantic ridge. Some Volcanoes are formed over the hot spot like the Volcanoes on the Hawaiian Islands.
Mountain Ranges
Are formed between between the collision of continental-to-continental convergence. Collision zone is created in this type of collision, no trench, no volcanoes but only large group of tall mountains are created known as mountain ranges. One very good example is the Himalayas mountain