Advertisements
Advertisements
प्रश्न
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
Advertisements
उत्तर
Change of season is periodic change as it occurs at regular intervals. Change of weather is non-periodic change because it does not occur periodically at regular intervals. Weather can change suddenly and it may rain in the evening.
APPEARS IN
संबंधित प्रश्न
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
Solve this crossword by using the clues that follow-
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change.
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Slow and fast change.
State whether the following statement is true or false. If false write the correct statement.
Melting of ice is an exothermic, irreversible chemical change.
When ice melts to form water, change occurs in its
When solute is dissolved in a solvent it forms a solution.
Natural changes which take place in nature on their own, are beyond the control of human being.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
