Class 9 is the stage before the board examinations of Class 10 so it is important to make sure that students learn all their lessons properly. Students have to be asked if they understand what is being taught and the best way to do this is by asking students to do projects which will help the teacher determine whether the student has understood the concept properly. A major advantage of leaning science is that if something cannot be taught theoretically, you can devise experiments to teach lessons in a practical and interesting way. Class 9 sciences are a bit tough as students learn advanced concepts but they can be asked to perform experiments to understand the concepts more properly. Here are some experiments based on the syllabus of class 9.
Proving Atoms Exist:
To perform this experiment, you will require one cup of water and one cup of rubbing alcohol. This experiment will help prove that atoms exist and there is a lot of gap between atoms even though atoms are extremely tiny and cannot be seen by the naked eye. Both water and the rubbing alcohol is made up of a lot of atoms but those atoms cannot be seen as they are small. However we can prove their existence by mixing both the water and the alcohol in equal amounts. By mixing one cup of water and one cup of rubbing alcohol and pouring the mixture into different cups, we can see that the quantity of the mixture is less than 2 cups. This is because the atoms of water and alcohol have holes in them which fill up each others’ space.
Laws of Motion:
Newton’s third law of motion states that ‘for every action, there is an equal and opposite reaction’. This law can be proved by conducting very simple experiments. The student can be made to wear skates and throw a ball. That force of throwing the ball will push the student in the opposite direction of the throw even though they have not pushed themselves in the opposite direction.
Newton’s first law ‘an object’s velocity will not be changed unless an outside force acts on it’ can be proved by kicking a stationary football. A football will not have any energy which is why it is stationary. As soon as the ball is kicked, it moves as an outside force transfers its velocity to the ball.
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