DETAILED LESSON PLAN
SCIENCE 10
CONTENT STANDARD
The learner demonstrates the understanding of the relationship among the location of volcanoes, earthquake
epicentres, and major mountain belts.
PERFORMANCE STANDARD
The learners should be able to demonstrate ways to ensure disaster preparedness during earthquakes,
tsunamis, and volcanic eruptions.
MOST ESSENTIAL LEARNING COMPETENCY
Explain the different processes that occur along the plate boundaries. S9ES- Ia-j-36.3
Objectives:
At the end of the lesson, the students should be able to:
 Identify and describe the different types of seismic waves.
 Explain the motion caused by different types of waves.
 Recognize the importance of seismic waves in the study of the Earth’s interior.
I.
II.
Subject Matter
a. Topic: SEISMIC WAVES
b. Reference: DepEd K-12Science 10 Learner’s Manual
Unit 1- Module 2, pp. 43-46
c. Science Skills: Critical Thinking
d. Materials
Television, laptop, chalk, visual aids, pictures
Learning Procedure
a. Preliminary
Teacher’s Activity
1. Classroom Conditioning
(let the teacher count 1,2,3)
2. Prayer
Let us pray.
3. Greetings
Good morning class!
Please be seated
4. Checking of attendance
Raven, do we have any absent today?
Student’s Activity
( As the teacher counts, the students will:
1 – arrange the chairs
2-Pick up the pieces of paper and
3- are now ready to pray)
(the students will pray)
Good afternoon ma’am! It’s nice to see you.
Thank you!
No ma’am
b. Recall
Teacher’s Activity
Yesterday we have discussed about the plate
boundaries.
Student’s Activity
What is a plate boundary?
Plate boundary is gigantic pieces of the Earth's
crust and uppermost mantle. They are made up
of oceanic crust and continental crust.
Very good. What are the three type of plate
boundaries?
Convergent, Divergent and Transform Boundary.
C. Motivation
Teacher’s Activity
Student’s Activity
(Video Presentation about Seismic Waves)
Let us have a “Charade Game”
One volunteers each group. Your leader will pick
a type of wave and the rest of your group mates
will guess what type of waves it is based on the
acting of your leader.
Yes mam.
Ready?
(Each representative of the group will go to the
front and let their group mates guess the word)
(finishes the activity)
Thank you everyone.
c. Lesson Proper
Teacher’s Activity
A. Pre-activity
I have prepared an activity sheet for you to do
entitle “The Amazing Waves”. You will be going
to fill up the graphic organizer by writing the
necessary information to complete the concept
about seismic waves and answer the guide
questions below.
Student’s Activity
I will be giving you 5 minutes to finish the
activity. Am I clear class?
Are you done?
Yes mam.
(The students do the activity)
Yes mam
B. Discussion
Okay class, Earthquake is a vibration of the
Earth produced by the rapid release of energy
most often because of the slippage along a fault
in the Earth’s crust. This energy radiates from
the focus in the form of waves called seismic
waves, which are then recorded in
seismographs.
Now, what are the two types of seismic waves?
Any representative from Group 1?
The two types of seismic waves are body waves
and surface waves.
Very good. What is a surface waves?
Yes, from Group 2 representative?
Surface waves can travel through the surface of
the earth only.
How about the body wave? Group 4?
Body waves are waves that travel at the interior
layers of the Earth mam.
Very good, What are the two types of surface
waves? Group 3?
The two types of surface waves are Love waves
and Rayleigh waves.
Excellent. What is the characteristic of a Love
wave? Anybody from Group 1?
It is faster than the Rayleigh wave and It moves
the ground in a side to side horizontal motion
like that of a snake’s causing the ground to twist.
Excellent. This is why Love waves can the most
damage to structures during an earthquake. It is
name after A.E.H. Love, a British mathematician
who worked out the mathematical model for this
kind of wave in 1911.
What are the characteristics of a Rayleigh wave?
It travels along the free surface on an elastic
solid such as the earth. A Rayleigh wave rolls
along the ground just like a wave rolls across a
lake or an ocean. Since it rolls, it moves the
ground either up and down or side to side similar
to the direction the wave is moving.
That’s correct! It was name after John William
Srutt, Lord Rayleigh, who mathematically
predicted the existence of this kind of waves in
1885.
And the other type of seismic wave is the body
waves. What are the two types of body wave?
From Group 2?
Very good. What are the characteristics of a Pwave? Any member of Group 3?
Excellent! How about the Secondary wave?
Yes from Group 4?
Very good. Now in your math class you have
discussed about parallel and perpendicular lines
or elliptical and wave zigzag line. Who can draw
on the board the lines I have mention?
The two types of body waves are Primary waves
and Secondary waves.
They are the first wave to arrive first at seismic
stations. They can travel through solid, liquid and
gas. They are also called compressional wave
because they travel by particles parallel to the
direction the wave is travelling,
The s-waves moves as a shear or transverse
waves and force the ground to sway from side to
side in rolling motion that shakes the ground
back and forth perpendicular to the direction the
wave is moving. It can travel through solids only.
(students draw on the board the lines mention)
Thank you. So that is how waves move class. Its
energy and its direction is either parallel like the
p-waves or perpendicular like an s-wave,
elliptical like a Love wave or zigzag wave like a
Rayleigh wave.
Okay pass your activity paper don’t forget to
write your name and group number.
Scientist class gained information about the
Earth’s internal structure by studying how
seismic waves travel through the earth.
Yes mam. ( students pass their activity paper)
Which type of wave do you think were useful to
seismologist in their study of the Earth’s
interior?
Body waves is the most useful type of seismic
wave in regards to studying the interior of the
earth because they travel inside the earth, we all
know that P waves can travel through solid,
liquid and gas and s-waves can travel through
solids only. That shows the outer core is liquid
because s- waves cannot travel through it while
p-waves can,
(video presentation about Shadow zone)
P –waves can travel through liquids while Swaves cannot. During an earthquake the seismic
wave radiates from the focus. Based on the
figure the waves bend due to change in density
between the crust and mantle. The boundary
between the two is called Mohorovicic
discontinuity in honour of the person who first
found out that the velocity of seismic wave’s
changes and increases at a distance below 50 km
in the earth. This led to an idea that there is a
difference in density between the two layers.
As the depth increases, the density also
increases. P-waves are detected on the other
side of the Earth as opposite the focus. A shadow
zone from 103 degrees to 142 degrees from p
waves is shown here. Then it will disappear from
103-142 degrees then re appear again. The
existence of a shadow zone could only b
explained if the Earth contained a core
composed of different material from that of a
mantle causing the P-waves to bend.
From the epicentre, where are s-waves can be
detected only?
S-waves can be detected until 103 degrees mam.
Very good. From that point S-waves can longer
be detected.
This observation tells us class that S-waves do
not travel all throughout the Earth’s body. There
is a portion inside the earth that does not
conduct the propagation of S-waves. This portion
must be the outer core which is liquid.
Do you understand our lesson today class?
Before we proceed to our next activity, let us
discuss first the rubrics for the activity.
Rubrics for Differentiated Instruction
50
40
30
20
10
Concept
Cooperation
Presentation
Yes mam.
For Concept:
50 – concept is clearly evident; contains all
necessary information.
40– concept is evident; contains most of the
necessary information
30 – concept is acceptable; contains some
necessary information
20 – concept is limited; insufficient necessary
information
10-Lack of concept; does not contain necessary
information
For cooperation
.
50 – all members of the group cooperate well
with each other
40 – only 5-6 members cooperate with each
other
30 – only 3-4 members cooperate with each
other
20– only 2 members cooperate with each other
10- only 1 member of the group do the work
For presentation
50- execute the work competently; well
prepared
40- executes the work adequately; prepared
30-executes the work fairly; somewhat prepared
20-Executes the work incompetently;
unprepared
10-executes the work poorly
Do you have any clarification on our rubrics?
Since I have already presented you with the
activity that you will be doing today,
If your group is ready, kindly do a ready clap.
C. APPLICATION/ GENERALIZATION
Group 1 – Write a Song/ Jingle about
Earthquakes and Seismic waves
Group 2- Write a graphic organizer in Seismic
Waves and explain /present in class.
Group 3- Draw scenes/picture about
earthquakes happening in our country and
explain in class.
Group 4- Role play about earthquakes and what
to do during earthquakes.
The students will do the activity.
D. Post Activity:
Are you ready for the presentation?
Each group will present their assigned task.
Very good, class! Give yourself a:
1. Love clap
2. Mommy Dionisia clap
3. Frog clap
4. Pakbet clap
D. Evaluation
Analyse the statements below and give the correct answer
1. What are the types of body waves?
a. Surface waves and P-waves
c. Love waves and Rayleigh waves
b. P-waves and S-waves
d. S-waves and Love waves
2. Which type of seismic wave that can travel only to the mantle but not on the outer core?
a. P-waves
b. S-waves
b. Love waves
d. Rayleigh waves
3. Whish of the following is the correct order for the layers of the Earth?
a. Crust, Core, Mantle
c. Mantle, Crust, Core
b. Core, Mantle, Crust
d. Crust, Mantle, Core
4. Which of the following statements is correct?
a. Secondary waves are faster than P-waves
b. Secondary waves are slower than P-waves
c. Primary waves are slower than secondary waves
d. Primary waves have the same speed as secondary wave.
5. Which type of seismic waves do you think are useful to scientist in their study of Earth’s internal
structure?
a. Body wave
c. Surface waves
b. Primary waves
d. Love waves
E. Agreement
As a reward for today’s well participative discussion and activity. Your assignment is, you rest and
have a goodnight sleep.
Goodbye class , See you again tomorrow.
Prepared by:
RACHELL E. FERREr
Teacher I
Checked by:
ELSA G. PASTRANA
Head Teacher III, Science Department