characteristics of a sound wave

Students can revise the characteristics of a sound wave by watching this video.

PROJECT

Collect the electricity bills of your house for the months June to  November.
Make graphs b/w
(a) Month and Cost of the Bill
(b) Month and Units  Consumed

From the graph, infer about the month of max. bill and max. consumption.

List the possible reasons for the same. Also suggest the measures to conserve electricity so lower the bill.

Rubrics of evaluation:
Presentation:3 MARKS
COMPLETENESS:3 marks
Timely submission:2
Originality:2 marks

work done

Ch. Work and Energy
Work and its types
Energy
Derivation of expressions for Kinetic and Potential Energy
Statement and Proof of Law of Conservation of Energy