3. What is the difference between natural and human-made changes? Give two examples
4. Why is cutting of vegetables a physical change, while cooking of vegetables is a chemicale
A. Answer the following questions.
1. List the different types of changes with examples.
2. Give an example to show that a physical change can be irreversible.
B. Define the following terms with examples.
1. Undesirable changes
2. Human-made changes
Answers
Answer:
hope it helps...
Explanation:
3- Natural resources – resources from nature or the environment. Man-made resources – resources made by people. Examples of natural changes are growth in man and seasonal changes and examples of man-made changes are burning of fuels and chemical reactions...
4:: It is so because while cutting we just cut vegetables into pieces and though it's physical shape and size change its chemical composition remains the same but while cooking of food we add masalas,water and many other things which change both the physical state and chemical composition so it is a chemical change .
A - 1 ::Happened Change. This kind of change is unpredictable in nature and is usually takes place due to the impact of the external factors. ...
Reactive Change. ...
Anticipatory Change. ...
Planned Change. ...
Incremental Change. ...
Operational Change. ...
Strategic Change. ...
Directional Change.
2::In an irreversible physical change, the original form cannot be restored. Melting ice and grinding wood into sawdust are examples of physical changes.
B,1: Desirable Changes: Those changes which are desired to occur that is, we want them to take place are known as desirable changes. Examples: ripening of fruits, germination of seeds etc. Undesirable change: Those changes which we do not want to take place are called undesirable changes.
2::Melting of glaciers due to global warming. Air pollution due to smoke created by burning of fuels and automobiles. Water Pollution due to draining of chemicals and wastes in the water bodies. Floods and droughts due to deforestation.
PLEASE FOLLOW ME