SCIENCE CLUB ACTIVITY – MAKING A MOUTH ORGAN

Topic: Sound Production Through Vibrations

Activity: Making a Mouth Organ

Method: Hands-on learning and simple experiment

Introduction

The students enthusiastically participated in a Science Club activity to make a simple mouth organ using easily available materials. The activity helped them explore how sound is produced through vibrations in an interesting and creative way.

Aim

To demonstrate how sound is produced by vibrations and understand the basic principle of sound production through a simple musical instrument.

Materials Required

- Two ice cream sticks

- Two small pieces of toothpick

- Two small pieces of paper

- Rubber bands

- Scissors

Procedure

1. Students took two ice cream sticks and two small pieces of paper.

2. They placed the paper pieces between the two ice cream sticks.

3. Small toothpick pieces were placed at both ends between the sticks.

4. Rubber bands were used to secure the ice cream sticks at both ends.

5. Students gently blew air through the mouth organ and observed the sound produced.

Observation

Students observed that a buzzing sound was produced when they blew air through the mouth organ. They noticed that the sound was created due to the vibration of the rubber band.

Scientific Explanation

When students blow air through the mouth organ, the rubber band vibrates rapidly. These vibrations produce sound. The sound travels through the air and reaches our ears.

Learning Outcomes

Through this activity, students:

•  Understood that sound is produced by vibrations.
•  Identified the rubber band as the vibrating part.
•  Explored the relationship between air and sound production.
•  Developed creativity, observation and practical skills.
•  Experienced science through a simple musical instrument.

Conclusion

The activity was an enjoyable and meaningful learning experience. Students explored the science of sound by making their own mouth organ and understood that vibrations are responsible for producing sound.

 SCIENCE CLUB ACTIVITY – FOOD WEB

Topic: Understanding the Interdependence of Living Organisms

Class: Middle School

Subject: Science

Activity: Food Web Demonstration

Method: Hands-on experiential learning

Introduction

The Science Club conducted an interactive activity on the topic “Food Web” to help students understand the relationship between different living organisms in an ecosystem.

Aim

To demonstrate how living organisms are interconnected through food relationships and understand the flow of energy in an ecosystem.

Materials Required

• Picture cards representing different organisms
• Thread 
• Students

Procedure

1. Students were assigned different picture cards representing organisms in an ecosystem.

2. They stood in a circle holding their respective cards.

3. A student holding the card of one organism connected the thread to another organism that it depends on for food.

4. The thread  was passed from one student to another, forming a network of interconnected organisms.

5. Students observed how the different organisms were linked through their food relationships.

Observation

Students observed that several organisms were interconnected through feeding relationships. The network formed by the string represented a food web and showed how organisms depend on one another for food and survival.

Learning Outcomes

Through this activity, students:

• Identified the feeding relationships between different organisms.
•  Understood the difference between a food chain and a food web.
• Recognized the interdependence of living organisms in an ecosystem.
•  Developed teamwork, communication and observation skills.
•  Understood that changes in one organism can affect other organisms in the food web.

Conclusion

The activity provided an enjoyable and meaningful learning experience. Students actively participated in creating a food web and understood that all living organisms are interconnected. They learnt that maintaining the balance of an ecosystem is essential for the survival of living organisms.

 Exploring Evaporation and Condensation Through Experiments

Science becomes more interesting when students learn through hands-on activities! As part of the Science Lab Activity, Class 6 students explored the fascinating processes of evaporation and condensation through simple experiments.

Learning Objectives

The activity aimed to help students:

• Understand the processes of evaporation and condensation.
• Identify the differences between these two processes.
•  Relate scientific concepts to everyday life.
• Understand the role of evaporation and condensation in the water cycle.

Activity 1: Exploring Evaporation

Materials Used: Utensil, water, Gas stove.

Procedure: Students took 100 ml of water in a beaker and heated it for about 10 minutes under supervision. They carefully observed the changes in the water.

Observation: The water level gradually decreased, and water vapour was produced.

Conclusion: Students understood that when water is heated, it changes into water vapour. This process is called evaporation.

Activity 2: Understanding Condensation

Materials Used: Steel glass, ice cubes and water.

Procedure: Students filled a dry steel glass with ice water and left it undisturbed for about 10 minutes. They then observed the outer surface of the glass.

Observation: Tiny water droplets appeared on the outer surface of the glass.

Conclusion: Students learned that water vapour present in the surrounding air cools down and changes into tiny water droplets. This process is called condensation.

Learning Outcomes and Benefits

Through these hands-on experiments, students:

• - Gained a better understanding of the water cycle.
• - Connected scientific concepts with everyday experiences.
• - Developed observation and experimental skills.
• - Improved their scientific thinking and curiosity.
• - Understood the importance of water in nature.

Conclusion

The activity provided an exciting opportunity for students to learn science through observation and experimentation. By performing these simple experiments, they gained practical knowledge of evaporation and condensation and understood how these processes play an important role in the natural water cycle.

 SCIENCE CLUB ACTIVITY – SOUND TELEPHONE

Topic: Transmission of Sound Through a Thread

Class: Middle School

Subject: Science

Activity: Making a Paper Cup Telephone

Method: Hands-on learning and demonstration

Introduction

Middle School students enthusiastically participated in a Science Club activity to make a simple telephone using two paper cups and a thread. The activity helped students understand how sound travels through vibrations and how messages can be communicated using a simple device.

Aim

To demonstrate how sound travels through a stretched thread and enables communication between two people.

Materials Required

- Two paper cups

- Thread

- Small stick or pencil to make holes

Procedure

1. Students made a small hole at the center of the bottom of each paper cup.

2. They passed a long thread through the holes and tied it securely inside each cup.

3. Two students held the cups at opposite ends, keeping the thread stretched tightly.

4. One student spoke into the cup while the other listened through the second cup.

5. Students exchanged roles and communicated messages using the paper cup telephone.

Observation

Students observed that the sound of their friend's voice could be heard through the paper cup telephone when the thread was stretched tightly.

Scientific Explanation

When a student speaks, sound vibrations travel through the air and make the bottom of the cup vibrate. These vibrations travel through the stretched thread to the second cup, producing sound that can be heard by the other student.

Learning Outcomes

Students understood that sound is produced by vibrations and can travel through solids. They explored the practical application of sound transmission and developed communication, teamwork and observation skills.

Conclusion

The activity was an enjoyable and interactive learning experience. Students discovered how sound travels through a stretched thread and understood the scientific principle behind a simple telephone.

 FIRST AID AWARENESS ACTIVITY

Topic: Learning First Aid Through Role Play – Fractures, Snake Bites, Burns and Insect Bites

Introduction

A First Aid Awareness Activity was conducted for Class 5 students to help them understand the importance of providing immediate care during emergencies. Through an engaging role-play activity, students enacted different emergency situations involving fractures, snake bites, burns and insect bites.

Objectives

- To create awareness about the importance of first aid.

- To demonstrate appropriate first aid techniques for common injuries.

- To develop quick and safe responses during emergencies.

- To encourage empathy, teamwork and a helping attitude.

Activity

Students participated enthusiastically in four different role-play situations:

1. First Aid for Fractures

Students demonstrated how to keep an injured person still and support the fractured area using a wooden scale as a splint and a crepe bandage. They learnt the importance of avoiding unnecessary movement and seeking immediate medical assistance.

2. First Aid for Snake Bites

Students enacted a snake-bite emergency and learnt the importance of staying calm, keeping the affected limb still and taking the victim to the hospital immediately. They also understood the harmful effects of cutting or sucking the wound.

3. First Aid for Burns

Students demonstrated the importance of cooling a burn under clean, cool running water and covering it loosely with a clean cloth. They learnt not to apply toothpaste, oil or ice to the affected area.

4. First Aid for Insect Bites

Students demonstrated how to clean the affected area with soap and water, avoid scratching and use a cold compress to reduce swelling. They also learnt to watch for signs of allergic reactions.

5. First Aid for Nose bleed 

Students demonstrated sitting upright and leaning forward slightly. They practiced gently pinching the soft part of the nose to stop bleeding. The activity helped students develop awareness of basic first aid and emergency care.

Learning Outcomes

Through this activity, students:

• - Identified different types of common injuries.
• - Understood basic first aid measures for emergency situations.
• - Learnt the do's and don'ts of first aid.
• - Recognized the importance of seeking immediate medical attention.
• - Developed confidence, cooperation and a sense of responsibility towards others.

Conclusion

The activity was an informative and practical learning experience for the students. Through role play and demonstrations, they gained awareness of basic first aid practices and understood how timely and appropriate action can help protect lives.

 "Stay Calm, Act Smart and Save Lives!"

Designing and Preparing a Remote Control Car

Class: VII

Subject: Science

Activity: Model Making – Remote Control Car

Method: Hands-on learning and experiential activity

Introduction

The Class 7 students actively participated in a Science Club activity in which they prepared a remote control car model. The activity provided an opportunity for students to explore the basic principles of science and technology through practical learning.

Aim

To encourage students to understand the basic working principles of a remote control car and develop creativity, problem-solving and technical skills.

Materials Required

- Remote control car components

- Wheels and motors

- Battery

- Connecting wires

- Remote control unit

- Suitable materials for assembling the car

Procedure

1. Students were introduced to the basic components of a remote control car.

2. They observed the different parts and discussed their functions.

3. With guidance, students assembled the components to prepare the car model.

4. They explored how the motor, battery and remote control system work together.

5. Students tested the car's movement and observed how it responded to the remote control.

Observation

Students observed that the car moved in different directions according to the commands given through the remote control. They understood that electrical energy from the battery helps the motor produce movement.

Learning Outcomes

Through this activity, students:

 Identified the basic components of a remote control car.

 Understood the role of batteries and motors in producing movement.

 Developed practical skills through model preparation.

 Improved creativity, teamwork and problem-solving abilities.

 Explored the application of science and technology in everyday life.

Conclusion

The activity was an engaging and interactive learning experience for the students. It encouraged them to explore the practical applications of science and technology and helped them develop an interest in robotics, engineering and innovation.

CARBON PURIFICATION

 To purify the carbon from the smoke emitted  by factories, the students of class IX namely 

J.NITHIN  and ARNAV.U had created a model for " CARBON PURIFICATION" and displayed in the CBSE - REGIONAL SCIENCE EXHIBITION held at RMK senior secondary school ,Thiruverkadu.

 This model has applications wherever air pollution needs to be controlled or filtered, especially in factories, vehicles, indoor spaces, and industrial settings. It also serves as a great educational tool to explain the importance of environmental protection.

Carbon purification uses activated carbon to remove impurities from liquids and gases, like water and air, through a process called adsorption. The highly porous structure of activated carbon traps contaminants on its surface, effectively eliminating issues such as odors, chlorine, organic compounds, and other chemicals. This purification technique is widely used in residential water filters, industrial water treatment, and air purification systems to improve product quality and remove pollutants. 

PROCEDURE

1. Take a cardboard box and place it in a cardboard of length 1 feet x 2 feet.

 2.Now, pierce a hole in the top of the cardboard box.

3. Take the plastic water bottle and cut the water bottle into a half.

 4.Now, open the cardboard box and insert the top body of the water bottle

. 5. Fix the bottle carefully as the node of the water bottle can be seen from outside.

 6.And then insert a PVC pipe into the mouth of the water bottle.

 7.Now, take a transparent plastic box and pierce two holes in opposite directions. 

8. Insert one end of the polluted air pipe into one side hole of the plastic box.

 9. Ensure the connection is airtight using tape or glue. 

10. Take another pipe and insert it into the opposite side hole of the plastic box. 

11. Take the chicken mesh and fold it like a box and keep it inside the plastic box. 

12. Fill the chicken mesh with cotton

13. Now, take a vertical pipe and connect it. 

14. Paste that pipe in a vertical direction. 

15. And then connect the PVC pipe from the mouth of the water bottle to the plastic box.

16. Now, label all the parts as factory, polluted air, carbon absorber, clean air, and chimney. 

17. Take a lamp and place it inside the cardboard box. 

18. Place camphor inside the lamp and fire it.

WORKING EXPLANATION

 Polluted air exits the factory through the first pipe. 

 It enters the carbon absorber, where the cotton filters out pollutants. 

 The clean air exits through the second pipe and goes up the chimney.

Observation

 Smoke Generation: Burning camphor produce white smoke, representing polluted air inside the factory.

Movement of Polluted Air: The smoke will travel through the "Polluted Air" pipe leading out of the factory and into the carbon absorber.

  Filtering in Carbon Absorber: The smoke passes through the cotton and observes the carbon. The intensity of the smoke reduces, indicating partial or complete removal of pollutants.

 Clean Air Release: The relatively cleaner air (with less visible smoke) exits through the "Clean Air" pipe and moves out via the chimney. 

BENEFITS

 Implementing a carbon purification model offers benefits like removing harmful organic chemicals, improving water taste and odor, and enhancing product quality in industries like food and pharmaceuticals.  It also protects sensitive equipment, such as RO membranes, and leads to reduced operational costs through its low energy use and long service life.  In environmental contexts, it aids in capturing atmospheric carbon dioxide, which can then be stored in water or used for applications like water softening or cooling systems. In Industrial Processes:

CBSE- REGIONAL SCIENCE EXHIBITION(2025-26)

 GREEN ENERGY

our school students  Rahul. P.K and Prahalad Shree Haree  of class VII participated in the CBSE REGIONAL SCIENCE EXHIBITION (VI -VIII category) held at RMK senior secondary school, Thiruverkadu on 19.11.2025 and 20.11.2025 on the below topic with the sub theme as Green Energy.

Eco friendly Power Storage device with Liquid Oxygen (LOX battery)

LOX BATTERY

Liquid oxygen when it in liquid state, the volume of 1 Litre, will expand up to approximately 860L, when it becomes a gas.

Power storage:

In this battery oxygen liquification is the power storage ,Oxygen Gas can be liquefied at a temperature of minus 183° Celsius and a pressure of 51.4 kg/cm².

Discharge:

It can be easily discharged by open one valve with one touch. 

WORKING COMPONENTS

Heat Exchanger Based Oxygen Chillness Remover

When liquid oxygen passes through an open-close valve, the oxygen transitions to a gaseous form. This transition significantly increases chilling effects, this may cause stuck up in pressure regulator, Flow Control Valve, and Air Motor. Therefore, this residue should be eliminated and The generated chilling effect can be redirected to the vehicle’s interior cooling ,as well as, we used to cold storage device (such as a freezer box).

Pressure Regulator

The liquid oxygen is already stored at 51.4 kg/cm^2 of pressure, This regulator allows us to control the pressure which is required, based on the load requirements .Less load requires less pressure, and more load requires more pressure. This concept is used to avoid power loss in the battery, and achieve good efficiency.

Flow Control Valve

The flow control valve is used to, control the speed of the air motor “Less speed, less flow; more speed, more flow “concept is used to reduce energy loss when the vehicle is locked in traffic and moving slowly on roads.

Air Motor:

The Air Motor features a low-leak, positive-movement design. It can be used to reduce energy loss and smooth ride.

An air motor has two ports ,one lets the air in to make the motor turn, and the other lets the air out.

Drive Gearbox:

The Drive Gearbox is used to strengthen the Air Motor, and also used to change the direction (forward/reverse) of the vehicle

Cost of the raw material and production process

Even though the cost of liquid oxygen costly, the raw material of liquid oxygen is distilled water, it is cheaper, One litre distilled water contains 889 grams of oxygen and 111 grams of hydrogen. A mass production and co-ordinate process make, liquid oxygen and liquid hydrogen making process very cheaper. Instead of liquid oxygen we can be used liquid hydrogen In our battery

Result

Triple Advantage:

1.The LOX battery is superior: It’s eco-friendly, long-lasting, compact, lightweight and it works long life.

2.A remarkable advantage of this battery is its high performance, as more than 95% of the energy invested during charging—which is stored in the form of high pressure and extreme cold—is recovered when the battery is discharged. This high level of performance signifies it is an excellent battery.”

3.Hydrogen and oxygen constitute an eco-friendly fuel source. Should we design or employ an engine operates by hydrogen and oxygen, which is released by our air motor, then this engine 'senergy potentially be utilized to reproduce the liquid hydrogen and liquid oxygen

Chemical Reaction of Magnesium with Oxygen

Burning of Magnesium Ribbon

 

During our science activity on Burning of Magnesium Ribbon, students explored how a metal reacts with oxygen and forms a completely new substance. The materials used for the activity included a strip of magnesium ribbon, sandpaper, a pair of tongs, a candle, a watch glass, water, and red and blue litmus papers. Before the burning process began, the students first examined the magnesium ribbon and noticed that its surface looked dull. They learned that this was due to a thin oxide layer formed when magnesium reacts slowly with air over time. To remove this coating, the students used sandpaper to gently clean the ribbon until it appeared shiny again, ensuring that the pure metal was exposed for a proper reaction. Holding the ribbon with tongs for safety, they brought it close to the flame of the spirit lamp. The moment it touched the flame, the magnesium ignited and burned with an intensely bright white light, which fascinated the students and helped them clearly understand that a chemical reaction was taking place. After the ribbon had completely burned, a white powdery substance was left behind on the watch glass. Students collected this ash—magnesium oxide—and added a small amount of water to it. This mixture formed magnesium hydroxide, which is only slightly soluble in water. The students then tested the solution with litmus papers. They observed that while blue litmus remained unchanged, the red litmus paper turned blue, indicating that the product formed was basic in nature. Through this hands-on experience, students not only understood the concept of chemical change but also learned how to test the nature of substances using indicators. The activity helped them connect theory with real observation, making the learning process engaging and memorable.

Chemical equations

• Burning (oxidation):
  2 Mg + O₂ → 2 MgO

• Reaction with water:
  MgO + H₂O → Mg(OH)₂

Fit India Movement Pledge

Health and Fitness

FIT INDIA MOVEMENT PLEDGE

The aim of the Fit India Movement is to make fitness an integral part of daily life by encouraging physical activity and sports for a healthier lifestyle and to combat lifestyle diseases. The movement seeks to create a behavioral change in the population to promote a more physically active lifestyle by making fitness accessible, fun, and free, spreading awareness through campaigns, and encouraging indigenous sports.

                                                    

                                                     "Health is the ultimate wealth."

In order to understand the above  quote, the students  of class 8 took "Fit India movement " pledge.

 Health and fitness are crucial for physical and mental well-being, helping to reduce the risk of chronic diseases like heart disease and diabetes, improve mood and energy levels, and strengthen muscles and bones. Regular physical activity also helps manage weight, improve sleep, and boost cognitive function, leading to a better overall quality of life. Reduces the risk of developing conditions like heart disease, stroke, type 2 diabetes, and some cancers. Helps maintain a healthy body weight and reduces body fat.

Formation of Shadow

 Shadow Activity

To help students understand how light travels and how shadows are created, our students of class v conducted an engaging and hands-on Shadow Activity. This activity introduced students to the basic principles of light, such as how it travels in a straight line, how objects block light, and how shadows change in size and shape depending on the position of the light source. The objective of the activity was to help children observe shadows, identify factors affecting them, and relate the concept to everyday experiences.

To begin with, students were shown a torch/flashlight and a variety of objects such as a  white dhoti, ball, a pencil, a toy, a book, and a bag.  All the doors and windows were closed for observing the shadows clearly. They observed what happened when the light was directed at the object. The students quickly noticed that when an object blocks the path of light, a dark region forms behind it. This dark patch is called a shadow. They also explored how different objects create shadows of different shapes and sizes and how transparent, translucent, and opaque objects behave when placed in the path of light. They created fun activities like shadow puppet show with different postures with their hands.

During the activity, students held objects at different distances from the light source and screen. They discovered that when the object moves closer to the torch, the shadow becomes larger, and when the object moves away, the shadow becomes smaller. They have also learnt that shadows are never inverted and they do not provided information such as color and size of objects

Through this activity, students understood that shadows form only when an object blocks light, and the nature of the shadow depends on the type of object and the position of the light source. The activity helped them visually connect scientific concepts with real-life situations, such as noticing shadows of trees, buildings, and themselves in everyday surroundings. The Shadow Activity was not only educational but also fun, allowing students to explore science in an enjoyable and creative way.