5th std EVS 2 chap. 2 history and the concept of time l question and answer l explanation in marathi

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Environmental Studies -  5th Standard

2. History and the Concept of Time

Question And Answer

Q1. Fill in the blanks.

(a) The calendar we use today is based on the Christian era.

(b) The period before the Common Era is known as the time before common era.

Q2. Answer each question in one sentence.

(a) Which scientific methods are used to estimate the age of the layers of soil and the remains found in them?

Ans: Carbon-14 analysis and tree rings analysis with scientific methods are used to estimate the age of the layers of soil and the remains found in them.

(b) How is the first century of the Common Era written?

Ans: The first century of common era is written as 1-100 CE or 1-100AD.

Q3. Answer the following questions in brief.

(a) What is meant by the unilinear division of time?

Ans: Seven days from Monday to Sunday make one week, two weeks make a fortnight, and four weeks make a month. Twelve months make a year. In this manner, we reckon tie in bigger and bigger units. One year followed by another and when 100 years go by, a century is completed. When ten centuries i.e 1000 years are gone, a millennium is completed. Such method of dividing time is known as a unilinear division.

(b) What are the units of measuring time?

Ans: Second, minute, hour, day, week, fortnight, month,year, century and millennium are the units of measuring time.

Q4. Complete the chart given below.

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