Previous paper class 9th(Physics)

Q # 2: Answer these following short questions: /24
I: Define base and derived quantities?
II: What is rest and Motion explain with the help of example?
III: Differentiate between scalars and vectors quantities with the help of defines?
IV: what do you know about significant figure?
V; Explain speed time graph?
VI: A car starts from rest its velocity 20m/s in 8s .find its acceleration?
VII: Differentiate between temperature and heat?
VIII: Specific heat capacity?
IX: Explain the term evaporation?
X: Sketch the change of states?
XI: What do you know about the term conduction?
XII: what is internal energy of body?