explain the physical quantities that gets changed when you compare noise and sound
Loud and unwanted sound is noise. A noise is an undesired sound with a larger amplitude.
❉ These are the sounds of single vehicles. How does it sound when many vehicles run together on the road making different noises ? Isn't there a lot of noise ?
❉ Where have you heard the maximum noise ?
❉ Do you like so much noise ? Why?
Explain with an experiment that the melting of wax is a physical change.Observe the changes around you and make a list of these changes and categories them into physical and chemical change.(At least 10 for each)