Question

post a science project idea for class 7 must be physics plz don't give meaningless answers and steal my points

Answer 1

Answer: Why don't you make jalatarang or a toy telephone using tea cups. It's easy and simple.

Explanation:

Jalatarang : Take 5 or 6 metal glass bowls. Fill them with water decreasing in one by one. Strike gently on glass bowls you can hear some tune.

Toy telephone with tea cups : Take two paper cups. Make small holes at the bottom of these cups. The holes should be very small so that only a thin string can pass through them. Take a long string. Insert the string or thread through the hole of one cup. Tie the string by putting a knot at the end. Likewise do the same with the other cup. Toy telephone is ready.

Hope you like it.