Grade 7 Science Module: Lights On or Lights Off?

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 your learning. Answer keys are provided for each activity and test. We trust that you will be honest in using these.

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.

Hello my dear learner! How are you? Have you experienced being in dark and bright places? Do you observe that somehow behind you are something dark portion that is formed on the ground? If yes, that is a shadow. A shadow is formed when an opaque object is hit by light. This shadow formation is related to an astronomical phenomenon called eclipses. In this module you will understand how shadows are formed. And how it is related to the formation of eclipses.

Most Essential Learning Competency:

  • Explain how solar and lunar eclipses occur using models.

This module is divided into two:

  • Lesson 1 – Solar Eclipse
  • Lesson 2 – Lunar Eclipse

After going through this module, you are expected to:

1. describe how shadows are formed;

2. describe solar eclipse;

3. describe lunar eclipse; and

4. determine the conditions for an eclipse to occur.

Grade 7 Science Quarter 4 Self-Learning Module: Lights On or Lights Off?


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