Information
AI Chat

This is a Premium Document. Some documents on Studocu are Premium. Upgrade to Premium to unlock it.

ELS Q1 Module-12 Relative-and-Absolute-Dating v2-1

ewan

Course

Science Technology and Society (STS)

80 Documents

Students shared 80 documents in this course

University

ICCT Colleges Foundation

Academic year: 2022/2023

Comments

Please sign in or register to post comments.

Preview text

CO_Q1_ ELS SHS

Earth and Life Science

Quarter 1 – Module 12:

Relative and Absolute Dating

Senior High School

Earth and Life Science Alternative Delivery Mode Quarter 1 – Module 10: Movements of Plates and Formation of Folds and Faults First Edition, 202 1

Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties.

Borrowed materials (i., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them.

Published by the Department of Education Secretary: Leonor Magtolis Briones Undersecretary: Diosdado M. San Antonio

Printed in the Philippines by ________________________

Department of Education – Region 4A CALABARZON

Office Address: Gate 2 Karangalan Village, Brgy. San Isidro, Cainta, Rizal Telefax: 02 -8682-5773/8684-4914/8647- E- mail Address: lrmd@deped.gov

Development Team of the Module Writer: Lucila Castor, Arrah Sulit Editors: Erwin R. Abrencillo Jocelyn M. Manset Reviewers: Dominic P. Almirez, Franz Kevin Manalo Princess Paolah L. De Guzman, Marissa C. Betchaida, Louie L. Alvarez Gregorio M. De Chavez, Jr., Jocelyn M. Manset, Mario B. Maramot, Elaine T. Balaogan, Job S. Zape Jr., Avelyn A. Cajayon, Victoria M. Magpantay, Fernando M. Villanueva Il lustrator: Ednelinda Robles, Cherry Amor Laroza Lovely Joy La Rosa, Charles Erick A. Jusay, Sandro Carlo B. Tablizo Layout Artist: Elizalde L. Piol, Anselma M. Ebero Jocelyn M. Manset Management Team: Francis Cesar B. Bringas Job S. Zape Jr. Eugenio S. Adrao Elaine T. Balaogan Merthel M. Evardome Nadine C. Celindro Nicolas M. Burgos Mario B. Maramot Fe M. Ong-ongowan Rosalinda A. Mendoza

Introductory Message

This Self-Learning Module (SLM) is prepared so that you, our dear learners, can continue your studies and learn while at home. Activities, questions, directions, exercises, and discussions are carefully stated for you to understand each lesson.

Each SLM is composed of different parts. Each part shall guide you step-by - step as you discover and understand the lesson prepared for you.

Pre-tests are provided to measure your prior knowledge on lessons in each SLM. This will tell you if you need to proceed on completing this module or if you need to ask your facilitator or your teacher’s assistance for better understanding of the lesson. At the end of each module, you need to answer the post-test to self-check you’re learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these.

In addition to the material in the main text, Notes to the Teacher are also provided to our facilitators and parents for strategies and reminders on how they can best help you on your home-based learning.

Please use this module with care. Do not put unnecessary marks on any part of this SLM. Use a separate sheet of paper in answering the exercises and tests. And read the instructions carefully before performing each task.

If you have any questions in using this SLM or any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator.

Thank you.

1 CO_Q1_ ELS SHS

What I Need to Know

This module was designed and written with you in mind. It is here to help you master the different methods in determining the age of stratified rocks. The scope of this module permits it to be used in many different learning situations. The language used recognizes the diverse vocabulary level of students. The lessons are arranged to follow the standard sequence of the course. But the order in which you read them can be changed to correspond with the textbook you are now using.

The module covers:

Lesson 1 – Relative and Absolute Dating

After going through this module, you are expected to:

differentiate relative from absolute dating through pictures presented; and
compare relative and absolute dating using comparison chart.

3 CO_Q1_ ELS SHS

Which was the first method used to determine ages of rock and fossils? A. Relative Dating B. Absolute Dating C. Radioactive Dating D. Radiometric Dating
What is the difference between an absolute date and a relative date? A. An absolute date refers to a year or a range of years while a relative date indicates a chronological order. B. A relative date is derived from radiometric dating techniques while an absolute date comes from guesswork. C. A relative date refers to a year or a range of years while an absolute date indicates a chronological order. D. An absolute date involves testing of sedimentary rocks while relative date involves testing of igneous rocks.

Refer to the diagram below and answer the questions that follow.

Which layer of the rocks follows the principle of superposition? A. Layer 1 B. Layer 3 C. Layer 4 D. Layer 6
Which layer of the rocks shows the cross-cutting relationship? A. Layer 1 B. Layer 3 C. Layer 4 D. Layer 6

4 CO_Q1_ ELS SHS

What method of Rock Dating is used in giving rocks an actual date? A. Absolute Dating B. Geological Dating C. Historical Dating D. Relative Dating
Which of the following is NOT true about Relative Dating? A. quantitative method of dating B. principles to recognize the relative ages of rocks C. used stratigraphy method (oldest found at the bottom and youngest a the top) D. us ed to arrange geological events and the rocks they leave behind in sequence
Which of the following is a principle of Relative Dating? A. Principle of Half-life B. Principle of Layering C. Principle of Superposition D. Principal of Floral Succession
Which of the following is NOT true about Absolute Dating? A. quantitative method of dating B. principles to recognize the relative ages of rocks C. used to give rocks an actual date or date range, in number of years D. use radiometric method by radioactive decay: concept of isotopes and concepts of half- life
What method of Rock Dating is using stratigraphy method? A. Absolute Dating B. Geological Dating C. Historical Dating D. Relative Dating

6 CO_Q1_ ELS SHS

What’s In

Activity 1: Solving the Earth’s Puzzle!

Directions. Find and encircle relevant words from the puzzle. Then, do the given tasks.

List of Words:

Rock
Relative
Absolute
Earth
Age

Tasks:

Using a dictionary or any reference, find the meaning of identified words.
Write sentences out of the identified words from the puzzle.
Differentiate absolute age from relative age.

A F F E N D F I N D C D R O C K S A J H T O M F S R E L A T I V E A H S A R A G L S U A B H I O T I E A T S R C G L R Z Y S Y O A T A B S O L U T E R N H D A B S P I O R Y O R E F S U L I T S O C O

Notes to the Teacher This module will help you understand the concepts about how to determine age of rocks. All parts are comprised of activities. Be guided with the instructions on how you will answer. Discuss through any mode the simple principles so the students can proceed to the next activity.

7 CO_Q1_ ELS SHS

What’s New

We have learned that geologic time is measured in two ways: relative and absolute age. Relative date or age measurement refers only to the order in which events occurred. On the other hand, absolute age is age in years. It tells the order in which events occurred and the exact amount of time that has passed since they occurred.

Activity 2: What’s in the Stack of Rock?

Directions. Look at the diagram of a rock layer. Focus on the sediment layer.

Figure 2. Sedimentation

Guide Questions:

How will you describe the rocks in the illustrations?
What is/are the use/s of this layering to the geologists?
At which pile of rock can you find the oldest? youngest? Justify your answer.
Can you determine the relative age of the rock based on the layering? How about absolute age?
What does the thickness of each layer indicate?

9 CO_Q1_ ELS SHS

Activity 3: A. Who’s the Oldest?

Directions. Use the letters in the diagram below to determine the age of rocks applying the method of relative dating. List the rock layers from youngest to the oldest relative to age.

Figure 7. Rocks layers and dikes

Guide Questions:

In the law of superposition, which layer is the oldest?

What is the relative age of igneous rock in layer H? (younger or older)
What is the youngest rock layer?
What law/principle is represented by layer H as it passes through layer M, F, B, and I?
Which rock layer is older, layer B or layer F?

10 CO_Q1_ ELS SHS

B. How many years?

Directions. Refer and analyze the diagram below to answer the provided questions.

How old was the youngest rock layer?

How about the oldest rock layer?

What method is used in determining the age of rocks a nd fossils based on the diagram?

####### Absolute Age

Since change is the only thing that is permanent, the measurement of absolute age or exact date became a challenging task to the scientists. But they found a natural process that occurs at constant rate and accumulates its record of the radioactive decay of elements in rocks.

Radioactive elements decay because they are composed of unstable isotopes that decompose spontaneously. Each atom has a certain probability of decaying at any time. It has half-life or time for it to decompose into half.

Radioactivity is not affected by geologic process and easily measured in the laboratory. Aside from those, daughter isotopes accumulate in rocks. The longer the rock exists, the more daughter isotopes accumulate. The process of determining the absolute ages of rocks and minerals by measuring the relative amounts of parent and daughter isotopes is called radioactive dating.

Figure 8. Rock Layers and Fossils

12 CO_Q1_ ELS SHS

What’s More

Activity 4: Relative vs. Absolute

Age of rocks can be determined through using two methods. These methods are absolute and relative dating.

Directions. Complete the concept map to show the differences between the two methods of dating.

Used to arrange geological events, and the rocks they leave behind in sequence

Relative Dating

________ method of dating

Used ___________

method (oldest found at the bottom and youngest at the top)

Absolute Dating

Used absolute dating methods, sometimes called numerical dating,to give rocks an actual date,or date range, in number of years.

________ method of dating

Use _________ method by radioactive decay: concept of isotopes and concepts of half- life

13 CO_Q1_ ELS SHS

Activity 5: Read and Fill!

Directions. Place the missing letters that best complete the term being described by each statement.

b l u e D __ __i__g

It is used to determine the age of a material by using numeric values.

C__o__s C__t__i __g

It states that the geologic feature which cuts another is younger of the two features.

R__la__ i __ e __a__i__g

It is used to determine the relative age of rock layers.

__up__r__o__i__i__n

This law states that the younger layer is at the top and older layer of rocks are at the bottom.

Se__im__nt__ry __ o__ks

These are rocks that usually form deposits that files up and hardened.

What I Have Learned

In determining the age of rocks in relative dating, it follows the different principles such as: , , and.
____________ dating is used to arrange geological events, and the rocks they leave behind in sequence.
dating is used to give rocks an actual date, or date range, in number of years.
Relative dating uses stratigraphy method while absolute dating uses method by radioactive decay.
The of a radioactive decay process is the time taken for half the original parent atoms to decay.

WORD POOL

Relative Absolute Superposition Original Horizontality Radiometric Crosscutting Stratigraphy Lateral Continuity Doubling Half-life Isotopes Faunal Succession

15 CO_Q1_ ELS SHS

Assessment

Directions. Read the following questions and choose the letter of the correct answer. Write the chosen letter on a separate sheet of paper.

Which type of dating method can be used on rock layers by applying the Law of Superposition? A. Absolute Dating B. Relative Dating C. Radioactive Dating D. Radiometric Dating
Which was the first method used to determine ages of rock and fossils? A. Absolute Dating B. Relative Dating C. Radioactive Dating D. Radiometric Dating
What is the difference between an absolute date and a relative date? A. An absolute date refers to a year or a range of years while a relative date indicates a chronological order. B. A relative date is derived from radiometric dating techniques while an absolute date comes from guesswork. C. A relative date refers to a year or a range of years while an absolute date indicates a chronological order. D. An absolute date involves testing of sedimentary rocks while relative date involves testing of igneous rocks.
What method of rock dating is used in giving rocks an actual date? A. Absolute Dating B. Geological Dating C. Historical Dating D. Relative Dating
Which of the following is NOT true about Relative Dating? A. quantitative method of dating B. principles to recognize the relative ages of rocks C. used to arrange geological events and the rocks they leave behind in sequence D. used stratigraphy method (oldest found at the bottom and youngest at the top)

16 CO_Q1_ ELS SHS

Refer to the diagram below and answer the questions that follow.

Which layer of the rocks follows the principle of superposition? A. Layer 1 B. Layer 3 C. Layer 4 D. Layer 6
Which layer of the rocks shows the cross-cutting relationship? A. Layer 1 B. Layer 3 C. Layer 4 D. Layer 6
Which of the following is NOT principle of Relative Dating? A. Superposition B. Floral Succession C. Original Horizontality D. Cross-cutting Relationship
Which of the following is NOT true about Absolute Dating? A. It is a quantitative method of dating. B. It uses simple principles to recognize the relative ages of rocks. C. It is used to give rocks an actual date, or date range, in number of years. D. It uses radiometric method by radioactive decay: concept of Isotopes and concepts of half- life.
What method of rock dating is using stratigraphy method? A. Absolute Dating B. Geological Dating C. Historical Dating D. Relative Dating

Multiple Choice

Multiple Choice

Was this document helpful?

Premium

This is a Premium Document. Some documents on Studocu are Premium. Upgrade to Premium to unlock it.