Question

1) Explain how we can take care of our eyes
2) Describe the construction of a kaleidoscope
3) Prove that lemon juice and vinegar are good conductor of electricity.
4) Draw a sketch of larynx and explain its function in your own words​

Answer 1

Answer:

avoid rubbing eyes

Explanation:

Answer 2

Answer:

1} *wash your eyes with clean cold water

*donot use too bright or too dim light while reading or doing work

*dim light can cause eye strain and headaches

*too bright light can injure the retina

2} A Kaleidoscope is composed of hallow tube.Three mirrors are placed in the form of a triangular tube and and there reflecting surfaces each other.One end of the tube is covered with a transparent sheet and another end is covered with an opaque sheet.

3} lemon water and vinegar is thus good conductor of electricity bcz due to the presence of small amounts of acid present in it.

4} draw the diagram by urself

* It is responsible for production of sound.

* It moves when we swallow something.

*Inside the larynx there are two vocal cords.

*there is a small gap b\w them...this small gap allows air to pass through.this protects the vocal cords to vibrate.

*since vibrating objects produce sound.

sound is produced due to the vibration of vocal cord.

*

Explanation: