science 7

3. third QUARTER- Week 1-2(a)
Melc-based

4. Most Essential Learning Competencies
After going through this lesson, you should be
able to:
Describe the motion of an object in
terms of distance or displacement,
speed or velocity, and acceleration.
(S7FE-IIIa-1)

5. Activity 1: My Road Map
Directions: Below is a road map showing two routes from home to
school. Which route will you choose and why? Write your answers in
your Science activity notebook.

6. About two centuries ago, people used animals
like horses and donkeys to transport people
and goods.

7.  In 1860, the internal combustion engine was developed by
Nicolaus Otto that led the way to the invention of motor
cars, trains, ships, airplanes and jets which enabled people
to travel faster. All of these involved motion.

8. Motion is the change in
position for a particular time
interval. If a body has
changed its position, we can
say that it has moved with
respect to its original
position.
Thus, the original position
serves as the reference
point.

9.  An object may be moving with respect to another
reference. For example, when you are inside a bus, you
are not moving with respect to the other passengers, but
you are moving with respect to the ground.

10.  Motion can be described by measuring the total
length of the path travelled by the object, and by
measuring the distance between the initial position
and final position of the object.

11. Example:
A car ran 100 meters from point A to point B, then 50
meters from point B to point C, and another 100
meters from point C to point D.

12. To solve the total length of path
travelled you can simply add the
length of path from points A to B, B
to C and C to D.
Total length of path =
length A to B + length B to C +
length C to D.
= 100 meters + 50 meters + 100
meters
Total length of path = 250 meters

13. The length of the entire path
that the object travelled is
referred to as distance.
Based on the example above,
the total length of path is equal
to 250 meters. This means
that the distance travelled by
the car is equal to 250 meters.

14. Displacement is the shortest distance between the
object’s initial and final positions.

15. To solve the displacement
of the car, simply subtract
the final position by the
initial position.
Displacement = Final
position – Initial position
= 50 meters – 0
Displacement = 50 meters

16. Activity 2: My Travel
Directions: Trace the distance and displacement using the figure below
and answer the questions that follow.
Situation: You are told to buy some foods in the market. You
walked 12 m East from home, 12 m North, 6 m West, 6 m
South, 6 m West, and finally, 8 m North to reach the market.
Questions:
1. What is your total distance
travelled?
2. Do you have a displacement?
3. What is your displacement?
4. How did you determine the
distance and displacement?

17. REFERENCE
 Modules from DEPED Region 10
 Books
 Asuncion, Alvie J., et. al, Department of Education –Instructional
 Materials, Council Secretariat (DepEdIMCS), First Edition, 2013
 Asuncion, Alvie J. et. al. Science- Grade 7 Learner’s Material. FEP Printing
 Corporation. PasigCity, 2017.
 Bentillo, Eulalia N., et. al, National Institute for Science and Mathematics
 Department of Education DevelopmentTeam Leader, Revised Edition, 2004
 Department of Education. Science- Grade 7 Learner’s Material, First
 Edition, 2017
 Department of Education-Science andTechnology IV, PhysicsTextbooks,
 Social Expenditure Management Project (SEMP), First Edition, 1992
 Padua, Alicia L., and Ricardo M. Crisostomo. Science andTechnology Series:
 Practical and Explorational Physics Modular Approach.Vibal Publishing

18. REFERENCE
 Modules from DEPED Region 10
 House, Inc.: Metro Manila, 2003.
 Project EASE- Physics. Module 9: Going Places. Department of Education.
 Rabago, Lilia M., Hideliza L. Portugal, Alicia L. Padua, Emma F. Fondevilla
 FMM, and Ricardo M. Crisostomo. SEDP Series: Science and
 Technology 4 Physics.Vibal Publishing House, Inc.: Metro Manila, 1997.
 Social Expenditure Management Project (SEMP), First Edition, 1992
 Teaching guide for Junior High School, First Edition, 2013
 Links/Websites
 “Average Speed &Velocity: Lesson for Kids.” Study.com. n.d.
 https://study.com/academy/practice/average-speed-velocity-quizworksheet-for-kids.html.Accessed June 3, 2020.
 Chan, Priscilla, et. al., Distance and displacement, http:///www.byjus.com., 2017
 Elert, Gleen,The Physics Hypertextbook,