Gravitation and Weightlessness – Effects of Gravitation on Objects (JSS 1)

Last Updated on July 21, 2020 by Alabi M. S.

 

BASIC SCIENCE 

BASIC SCIENCE AND TECHNOLOGY

THIRD TERM  

JSS 1

THEME: YOU AND ENERGY 

TOPIC – GRAVITATION AND WEIGHTLESSNESS 

LEARNING AREA

1. Definition of Gravitation and Weightlessness

2. Effects of Gravitation on Objects

 

PERFORMANCE OBJECTIVES 

By the end of the lesson, the students should have attained the following objectives (cognitive, affective and psychomotor) and should be able to –

1. explain the meaning of gravitation and weightlessness.

2. state the effects of gravitation on objects.

 

ENTRY BEHAVIOUR

Falling fruit from the tree top.

 

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

1. Scale balance

2. Various objects

3. Writing materials

 

 

METHOD OF TEACHING – Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons. 

 

REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information – Friction – Meaning, Uses, Advantages and Disadvantages of Friction (JSS 1)

Forces – Meaning and Types of Forces (JSS 1)

 

CONTENT OF THE LESSON  

INTRODUCTION

Gravity does exist everywhere in the universe but in the space, it does not exist.

 

 

DEFINITION OF GRAVITATION AND WEIGHTLESSNESS

Gravitation is defined as the force that pull down an object with weight (mass) back to earth. Or force that make everything that goes up to fall back down to earth.

For example, the force that brings down an orange from the orange tree, it is called gravitational force.

 

Weightlessness is defined as a condition that make an object with weight (mass) appear as without weight. That’s, the state of being weightless.

In space, everything with weight floats.

 

EFFECTS OF GRAVITATION ON OBJECTS

1. It causes falling of all objects.

2. It increases speed of falling objects.

3. It causes objects to move.

4. It makes exchange of gasses possible.

5. It supports life.

 

 

PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the students some questions;

2. Demonstrates the effect of gravitational pull on objects.

Student’s Activities – Carry out demonstrations on gravitation.

3. Leads students to demonstrate the effect of gravitation on objects.

Student’s Activities – Demonstrate the effect of gravitation on objects.

4. Guides class discussion on the effect of gratification.

5. Teacher’s/Student’s Activities – Carry out activities on weighing themselves and recording their individual weights.

 

CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

 

LESSON EVALUATION 

Students to:

1. define gravitational pull.

2. describe the effects of gravitation on stone, feather, book.

3. state where a person is likely to experience weightlessness.

 

 

 

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