Please select a subject first
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______ changes which take place within a short period of time.
Concept: undefined >> undefined
Analogy:
Germination of seed:: slow change.
Breaking of glass:: ______.
Concept: undefined >> undefined
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Match the following:
| 1. | Lighting | a. | Physical change |
| 2. | Touch me not plant leaves showing | b. | camphor |
| 3. | Sugar dissolving | c. | Water |
| 4. | Sublimation | d. | Reversible change |
| 5. | Universal solvent | e. | Fast change |
Concept: undefined >> undefined
Mention any three examples of fast change?
Concept: undefined >> undefined
Formation of coal is a ______.
Concept: undefined >> undefined
Change of seasons: slow change:: Breaking of glass: ______.
Concept: undefined >> undefined
Movement of wind takes place in ______ layer.
Concept: undefined >> undefined
The atmosphere is held in place by the earth’s ______.
Concept: undefined >> undefined
The atmosphere is made of ______ different layers.
Concept: undefined >> undefined
A ______ shows the direction in which the air is moving at a particular place.
Concept: undefined >> undefined
The ozone layer protects all life on earth from the harmful ______ rays of the sun.
Concept: undefined >> undefined
Highly reactive gas was later names ‘oxygen’ by ______.
Concept: undefined >> undefined
Analogy:
Weather changes: Troposphere.
Ozone layer: ______.
Concept: undefined >> undefined
The air envelope is thicker near the earth’s surface and we go higher the density and availability of air gradually decreases. Why?
Concept: undefined >> undefined
Why do aircraft usually fly above the troposphere layer?
Concept: undefined >> undefined
Robert Hooke saw many objects like Butterfly’s compound eyes, Bee’s wings, etc.
Concept: undefined >> undefined
