Advertisements
Advertisements
State the volume changes that you will observe when a given mass of water is heated from 0°C to 10°C. Sketch a temperature-volume graph to show the behaviour.
Concept: undefined >> undefined
A given mass of water is cooled from 10°C to 0°C. State the volume changes you will observe. Represent these changes on a temperature-volume graph.
Concept: undefined >> undefined
Advertisements
A deep pond of water has its top layer frozen during winter. State the expected temperature of water layer (i) Just in contact with ice and (ii) At the bottom of pond.
Concept: undefined >> undefined
Draw a diagram showing the temperature of various layers of water in an ice covered pond.
Concept: undefined >> undefined
Explain the following
Water pipes in colder countries often burst in winter.
Concept: undefined >> undefined
Explain the following
In winter, water tanks (or ocean) start freezing from the surface and not from the bottom.
Concept: undefined >> undefined
S.I. unit of temperature is :
Concept: undefined >> undefined
Describe in brief, with the aid of a lebelled diagram, an experiment to demonstrate that a material medium is necessary for propagation of sound.
Concept: undefined >> undefined
State three characteristics of the medium required for propagation of sound?
Concept: undefined >> undefined
State two properties of medium on which the speed of sound in it depends.
Concept: undefined >> undefined
Compare approximately the speed of sound in air, water and steel.
Concept: undefined >> undefined
Answer the following question :
How does the speed of sound differ in different media?
Concept: undefined >> undefined
Flash of lightning reaches earlier than the sound of thunder. Explain the reason.
Concept: undefined >> undefined
How does the speed of sound in air vary with temperature?
Concept: undefined >> undefined
Complete the following sentences :
When sound travels in a medium, the particles of medium ___________ but the disturbance ___________.
Concept: undefined >> undefined
The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 m s-1, find the distance of flash from the observer.
Concept: undefined >> undefined
A boy fires a gun and another boy at a distance hears the sound of fire 2.5s after seeing the flash. If the speed of sound in air 340 m/s, find distance between the boys.
Concept: undefined >> undefined
