Download Brigada Form and Twg Forms and more Lecture notes Family and Consumer Science in PDF only on Docsity!
SCIENCE - GRADE 10
Name: ______________________________________ Date: ____________________
Grade: ______________________________________ Section: ___________________
Quarter: 1 Week: 2 SSLM No. 2 MELC(s): Describe and relate the distribution of active volcanoes, earthquake epicenters, and major mountain belts to Plate Tectonic Theory (S10ES-Ia-j36.2)
Objectives :
- Define plate tectonics.
- Locate the epicenter of an earthquake using triangulation method.
- Describe the distribution of earthquake epicenters.
Title of Textbook/LM to Study : Science 10 Learner’s Module Chapter: 1 Pages: 3, 6-15 Topic: Plate Tectonics: Earthquakes: Its Focus and Epicenter
Many land characteristics, such as mountains and volcanoes, are abundant in our country. Have any of these features been spotted in our area? Minerals can be found in these characteristics, and they can also be used for agriculture.
Have you ever pondered why our country has such unique geological features? In this section, we'll look at the foundation that will help us grasp how things function.
What Is Plate Tectonics?
The crust and top section of the mantle make up the lithosphere of the Earth. This section of the module will focus solely on the Earth's outermost layer, the crust , which is divided into two types: continental crust , which is thicker but less dense, and oceanic crust , which is thinner but denser than continental crust.
Let Us Discover
The crus t is made up of sedimentary, metamorphic, and igneous solid rocks. It has a density of 2.8 g/cm3 on average and a thickness of 5 to 50 km. The crust is thickest where there are relatively young mountains and thinnest where the ocean floor is present.
Figure 1. The Earth’s Crust Lifted from: https://www.slideserve.com/havyn/tectonic-plates
The entire lithosphere of the Earth is split into several parts called plates , according to the plate tectonic model below.
Figure 2. Map of Plate Boundaries Lifted from: https://geology.com/plate-tectonics.shtml
Plate tectonics is a theory that the Earth's crust is made up of plates that interact in a variety of ways, resulting in earthquakes, mountains, volcanoes, and other geologic phenomena. Plates are single-moving, rigid portions of the lithosphere.
Figure 3. Map of the Philippines Lifted from: https://www.drivingdirectionsandmaps.com/wp- content/uploads/country-maps/rp-country-map.gif
Guide Questions:
- Where is the epicenter of the hypothetical earthquake? __________________
- What difficulty will you encounter if you have data from two recording stations? _____________________________________________________
Perform the following activity to test your knowledge about earthquake epicenters.
Activity 2. MARK THE BOUNDARIES (Earthquake Epicenters)
Objective : Describe the distribution of earthquake epicenters.
Materials : Map of earthquake distribution 2 pieces plastic sheets used for book cover, same size as the book page Marking pens (black and blue)
Procedure:
- Study the map below showing the earthquake distribution around the world.
- Place the plastic sheet over the map. Trace the approximate location of several earthquake clusters using a black marking pen on the plastic sheet.
Guide Questions:
- How are earthquakes distributed on the map? _________________________
- Where are they located? __________________________________________
- Why is it important for us to identify areas which are prone to earthquake?
Let Us Do
