Question

Class six
Science subject
Define the following terms
expansion
contraction
evaporation
melting
​

Answer 1

Answer:

expention-expend in a substance on heat

contraction- decrease in size of a substance on cooling

evaporation- it is the process where in liquid transform into to gas

melting- it is the process when solid transform into liquid on heat

Explanation:

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Answer 2

Answer:

expansion -the act of becoming bigger or of making something bigger : the act of expanding. : a more complete and detailed written work or set of comments based on something shorter.

contraction- the action or process of contracting The hot metal undergoes contraction as it cools. : the state of being contracted. b : the shortening and thickening of a functioning muscle or muscle fiber. c : a reduction in business activity or growth.

evaporation-Evaporation is the process by which water changes from a liquid to a gas or vapor. Evaporation is the primary pathway that water moves from the liquid state back into the water cycle as atmospheric water vapor.

melting -melting, change of a solid into a liquid when heat is applied. In a pure crystalline solid, this process occurs at a fixed temperature called the melting point; an impure solid generally melts over a range of temperatures below the melting point of the principal component.

Explanation:

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