Grade 10 SCIENCE | Quarter 1 Module 1 [NEW!] | Lithosphere: The Rocky Skin of Earth

Summary

In this engaging Grade 10 science lesson, Miss Deya El Mundo introduces the lithosphere, Earth's rocky skin, focusing on plate tectonics. She explains the distribution of active volcanoes, earthquake epicenters, and major mountain belts in relation to plate boundaries. The lesson delves into the continental and oceanic lithospheres, their differences in age, thickness, density, and rock composition. Students learn to identify primary and secondary plates and understand the scientific basis for plate division, using data on geological events to trace plate boundaries.

Takeaways

• 📘 The lesson is about the lithosphere, which is the rocky skin of Earth, and is part of a division made module for grade 10 science.
• 🌏 The lithosphere is divided into tectonic plates, which are the smaller sections of the lithosphere, and plate boundaries are the edges that separate these plates.
• 🔍 The two main types of lithospheric plates are continental and oceanic, with the continental lithosphere being thicker and composed of granite, while the oceanic lithosphere is thinner and made up of basalt.
• 📊 Continental lithosphere has an average thickness of 25 to 70 kilometers and a lower density (2.7 g/cm³), whereas oceanic lithosphere is 7 to 10 kilometers thick with a higher density (3.0 g/cm³).
• 🏔 The Earth's lithosphere includes both the crust and the upper mantle, and the lesson aims to differentiate between oceanic and continental crust.
• 🌳 The lesson's essential learning competency is to describe and relate the distribution of active volcanoes, earthquake epicenters, and major mountain belts to plate tectonics.
• 🌐 There are seven primary lithospheric plates and eight secondary plates, with primary plates being larger and named after continents, except for the Pacific plate.
• 📈 Scientists determine the divisions of lithospheric plates based on the distribution of geological events and features such as earthquakes, volcanic activities, and mountain ranges, which often occur along plate boundaries.
• 🌋 The Pacific Ring of Fire is a significant area where many earthquakes and volcanic activities occur, highlighting the relationship between geological activity and plate tectonics.
• 📊 The basis for dividing lithospheric plates includes gathering data on earthquake epicenters, volcanic eruptions, and the presence of mountain ranges to plot plate boundaries.
• 📚 The lesson encourages students to understand the scientific basis for plate divisions and to identify major lithospheric plates and their characteristics.

Q & A

What is the main topic of the first lesson for grade 10 science in this script?

The main topic of the first lesson for grade 10 science is the lithosphere, specifically discussing its distribution, types, and the concept of plate tectonics.

What is the lithosphere?

The lithosphere is the rigid outermost shell of a planet, consisting of the crust and uppermost part of the mantle. It is often referred to as the 'rocky skin of the Earth'.

What are the two types of lithospheric plates mentioned in the script?

The two types of lithospheric plates are the continental lithosphere and the oceanic lithosphere.

How is the continental lithosphere characterized in the script?

The continental lithosphere is characterized as being thicker, with an average thickness of 25 to 70 kilometers, composed of old rocks, and having an average density of 2.7 grams per centimeter cube. It is usually made up of granite rock.

What are the main differences between continental and oceanic lithospheres?

The main differences are that continental lithosphere is older, thicker, and less dense than the oceanic lithosphere. Continental lithosphere is made up of granite, while oceanic lithosphere is made up of basalt.

What is the average thickness of the oceanic lithosphere?

The oceanic lithosphere has an average thickness of 7 to 10 kilometers.

How many primary and secondary plates are there according to the script?

There are seven primary plates and eight secondary plates.

What is the basis for dividing the lithospheric plates as discussed in the script?

The basis for dividing lithospheric plates is the distribution of geological events and features such as earthquake epicenters, active volcanoes, and major mountain ranges, which are found near or along plate boundaries.

What is the Pacific Ring of Fire, and how is it related to plate boundaries?

The Pacific Ring of Fire is a region around the Pacific Ocean where many volcanic eruptions and earthquakes occur. It is related to plate boundaries because these geologically active areas are often found along the edges of tectonic plates.

How do scientists determine the shape and boundaries of lithospheric plates?

Scientists determine the shape and boundaries of lithospheric plates by gathering data on geological events such as earthquakes, volcanic eruptions, and the locations of major mountain ranges, which help them plot the plate boundaries.

What is the role of the division made module of SDO Kalookan for grade 10 science in this lesson?

The division made module of SDO Kalookan for grade 10 science serves as the educational framework for the lesson, providing the essential learning competencies and guiding the exploration of the lithosphere and plate tectonics.