Republic of the Philippines
Department of Education
Grade 8 School Grade Level 8
Daily Lesson Log Teacher Learning Areas Physics
Junior HS Science
Teaching Dates Quarter First
Date
Week No. 5 Day 1 Day 2 Day 3 Day 4
I. OBJECTIVES
Content Standard The Learners demonstrate an understanding of • The learner demonstrates understanding of The learners demonstrate an understanding of the propagation of sound through
work using constant force, power, gravitational potential energy, kinetic energy, and elastic solid, liquid and gas.
potential energy
Performance Standard
Learning Competency • Differentiate potential and kinetic energy. • Infer how the movement of particles of an object affect the speed of
• Relate speed and position of object to the amount of energy possessed by a body. sound through it.
Code (S8FE-Id--22) (S8FE-Id-23) S8FE –Ie-24
DAILY TASK Objectives: Objectives: All objectives Objective:
1. Define of Module 2 Infer that sound consists of vibrations that travel through the air.
kinetic
energy. 1. State the meaning of potential energy.
2.Relate the 2. Relate potential energy to work
speed and 3. Calculate the change in potential energy of a body
position of
object to the
amount of
energy
possessed
by a body.
3. Calculate
the kinetic
energy of a
moving body
II. CONTENT Module II: Module II : WORK, POWER AND ENERGY LONG/ Module III: SOUND
WORK, Lesson 15: POTENTIAL ENERGY UNIT TEST Lesson 16: PROPAGATION OF SOUND
POWER
AND
ENERGY
Lesson 14:
KINETIC
ENERGY
III. LEARNING
RESOURCES
Teacher’s Guide 21 21-22 49-51
Learner’s Materials 26-28 28-33 71-73
Additional Materials
Science Vocabulary Five (5) Five (5) scientific terms per day Five (5) scientific terms per day
scientific
terms per day
Science Concept of the Day One (1) One (1) science concept related to the topic One (1) science concept related to the topic
science
concept
related to the
topic
ELICIT How will What is kinetic energy? Give the formula of kinetic energy ME/NOT ME
you define Me/not Me review activity allows student to develop their Analytical thinking
skills through comparing two particular concepts. In this activity, students are ask
power?
to identify the differences between Kinetic and Potential Energy by completing
the ME/NOT ME Table.
POTENTIAL ENERGY KINETIC ENERGY
ENGAGE Picture Present the video to the class and have them watch the video Guessing game:
Analysis: about the roller coaster ride
Let the students guess the answer to the question, “ What is a vibration
(https://www.youtube.com/watch?v=JFNKyi_lzyg)
produced by a vibrating body”. They may decode the term by dialing the numbers
The student After watching the video let the students brainstorm on what 76863, in the keypad below.
will look at they have viewed. Ask them: “What science concepts are
the picture involved in the roller coaster? “Today, we will deal more on C ABC DEF
presented by the energy possessed by the roller coaster.” 2 3
the teacher.
GHI JKL MNO
4 5 6
PQRS TUV WXYZ
What kind
7 8 9
of energy
does the boy
0
possess?
Explain
your
answer.
EXPLORE Do the Do Activity on Rolling Toy - Lesson Guide Grade 8 First Do the activity on Sound, Lesson Guide G-8 First Quarter pp. 52-53
Activity on Quarter pp 47-49
Exploring
kinetic energy
with ramps,
Lesson
Guide Grade
8 First
Quarter, pp
43-44
EXPLAIN Analysis:
1. PUTTING TOGETHER
Which car Based from the discussion that every group had, they are ask to present the over -
will run all concept of what they have learned from their turn and talk norms activity. Each
fastest? Why Analysis: group will be given 3 minutes time allotment to present their output in front of the
do you think class. Each group will be grade based on the following criteria;
so?
2. Q1. What happens to the toy?
Q2. What kind of energy is ‘stored’ in the rubber band? Criteria
How does the Q3. What kind of energy does a rolling toy have?
amount of Q4. What transformation of energy happens in a rolling toy? Presentation 10 Points
energy Content 10 Points
possessed by Neatness 5 Points
each car Time Bound 5 Points
affect its Total 30 Points
speed?
ELABORATE How do Actor and actress of the day SEEING THE CONNECTION
kinetic energy This part of the lesson enhance the process skills of the students through giving
applies to Ask 5 learners to give example of potential energy inferences from their acquired learning through observation. Specifically, students
everyday life? then each them will act the given situations. The will be asked to provide answer on the following;
audience will determine if the action taken by the How do you know that there is an approaching train? If you are living near a
1.a running actor/actress is example of potential energy. railway, how does it affect your emotion?
roller coaster
2.your jaw
when you are
chewing
3.when
playing
billiard, the
energy is
transferred
from the stick
to a
ball
4.A Slinky
moving down
a set of steps
5.Snow skis
gliding down
the mountain
6.Gas
molecules
moving
around in a
room
EVALUATE Assessment: Answer a 5-item multiple choice type of question. Write TRUE if the statement is correct and FALSE if the statement is wrong.
1. Sound is a mechanical waves propagating in space.
2. Sound does not need a medium to propagate.
Tell
3. Sound wave is a longitudinal wave.
whether 4. Particles of the medium vibrate in the direction of wave
each motion.
5. Sound carries energy.
statement is
true or
false:
1. When work
that is done
on a body
increases
its velocity,
then, there
is an
increase in
the kinetic
energy of
the body.
2. The kinetic
energy of a
more
massive
object at
rest is
greater than
that of a
less
massive
moving
object.
3. If the
velocity of
a moving
object is
doubled, its
kinetic
energy is
also
doubled.
4. The unit of
kinetic
energy is
the same as
the unit of
work.
5. The unit kg
m2/s2 is
also a unit
of energy.
EXTEND Journal entry:
What is Write a short paragraph on how potential and kinetic energy is
potential related to your life.
energy?
V. REMARKS
VI. REFLECTION
8 8 8 8A 8B 8C 8 8 8 8A 8B 8C
A B C A B C
From the evaluation,
No. of Learners who
earned:
80% and Above:
Below 80%:
Did the remedial lessons
work? No. of Learners
who:
have caught
up with the
lesson
continue to
require
remediation
Which of my teaching
strategies worked well?
Why did this work?
What difficulties did I
encounter which my
Principal/ Supervisor can
help me solve?
Grade 8, Quarter 1 Prepared by: Checked by: Noted by:
Daily Lesson Log Teacher: Head Teacher: Principal:
Week 5 Signature: Signature: Signature:
Date Submitted: Date: Date:
II. ASSESSMENT
Direction: Read the questions below and choose the letter of the correct answer.
1. A roller coaster climbing the first hill is an example of
A. building kinetic energy.
*B. building potential energy.
C. gravitational forces.
D. nuclear energy.
2. Of the following units, the one that is a unit of potential
energy is?
A. Newton
*B. Joule
C. Meter
D. Liter
3. A stationary object may have
*A. potential energy
B. velocity
C. kinetic energy
D. acceleration
4 . A 50 kilogram object is located 5 meters above the
ground level. Find its potential energy.
*A. The object's potential energy is 2450 J.
B. The object's potential energy is 24.50 J.
C. The object's potential energy is 2.450 J.
D. The object's potential energy is 245.0 J.
5. A 12 kg cat who is resting on a tree has a potential
energy of 50 Calculate its position (height) relative to the
ground.
A. The cat is located 0.43 m above the ground.
*B. The cat is located 0.43 m above the ground.
C. The cat is located 0.43 m above the ground.
D. The cat is located 0.43 m above the ground.
III. ASSESSMENT
Direction: Choose the letter of the correct answer.
1. In which situation is there NO work done in the system?
a. A monkey climbing a tree
b. A person in an ascending elevator
c. A weight lifter lifting a barbell in the air
d. A stone whirled around the horizontal circle
2. Describe the energy changes that take place when the ball is
thrown upward.
a. Potential to Kinetic
b. Kinetic to Potential
c. Both a and b
d. Cannot be determined
3. What happens to energy when it is transferred from one body to
another?
a. Energy is gained.
b. Energy is destroyed.
c. It loses energy.
d. Both a and c
For numbers 4 and 5, Show complete solutions.
4. A ball with mass of 2 kg is dropped from a height of 60 m. What is the potential energy of the ball? Assume that the reference position is the ground.
5. A book weighs 5.0 newtons when it is raised 1.5 meters.
Calculate its increase in potential energy.
IV. ASSESSMENT
Direction: Choose the letter of the correct answer.
1. Which of the following statements indicates the best way to
increase power?
*A. increase the amount of work done in a given amount of
time, or do a given amount of work in less time
B. increase the amount of work done in a given amount of
time, or do a given amount of work in more time.
C. decrease the amount of work done in a given amount of
time, or do a given amount of work in less time .
D. decrease the amount of work done in a given amount of
time, or do a given amount of work in more time.
2. What does the power of a machine measures?
A. the work it does
*B. its rate of doing work
C. the force it produces
D. its strength
3. A girl carries a heavy suitcase quickly up a flight of stairs. A
boy of the same weight carries the same suitcase slowly up
the flight of stairs. Which statement is true?
A. The girl did less work and had less power than the boy.
B. The girl had less power than the boy.
C. The girl did more work and had more power than the boy.
*D. The girl had more power than the boy
4. What is the power develop by a jumbo jet that cruises at 200
m/s when the thrust of its engine is 100,000 N?
A. 20,000 W B. 200,000W
C. 20,000,000W D. 2000 W
5. The following the units to express power. Which is not
included?
A. N.m/s B. J/s C. watt D. N.m/s2
