# Balbharati Class 5 Environmental Studies Part 2 Solutions Chapter 2 History and the Concept of Time

## Balbharati Class 5 Environmental Studies Part 2 Solutions Chapter 2 History and the Concept of Time

Welcome to NCTB Solutions. Here with this post we are going to help Maharashtra State board 5th class students by providing Balbharati Class 5 Environmental Studies Part 2 Solutions for Chapter 2, History and the Concept of Time. Here students can easily find all the answers for the questions in History and the Concept of Time. Also our Expert Environmental Studies Teacher’s solved all the question answer with easily understandable language with proper guidance so that all the students can understand easily. Here on this post students will get chapter 2 History and the Concept of Time solutions. Here all the Question Answer are based on Balbharati latest syllabus. Here all the question and answer are based on Maharashtra State Board latest syllabus.

History and the Concept of Time Exercise question Solutions :

Question no – (1)

(a) The calendar we use today is based on the Common Era or Christian Era.

(b) The period before the Common Era is known as the time Before Common Era (BCE) or Before Christ (B.C)

Question no – (2)

(a)  The scientific techniques that are used to estimate the age of the layers of soil and the remains found in them are Carbon-14 analysis and Tree – rings analysis.

(b) The first century of the Common Era is written as ‘1 – 100 CE’ or ‘1 – 100 AD’

Question no – (3)

(a) Unilinear division of time :

A period of seven days make a week, fourteen days make a fortnight, twenty eight days make one month. Three sixty five days make a year. In this way, time is calculated in bigger and bigger units. A period of one hundred years make a century and ten centuries make a millennium. So, this procedure of dividing time is called a unilinear division of time.

(b) The units of measuring time :

The purpose of measuring time is to measure the length of time. The units of measuring time are second, minute, hour, day, week, fortnight, month, year, century and millennium. Of these, second is the smallest units of measuring time. In different parts of the world, various methods are adopted for measuring time.

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Updated: July 26, 2023 — 6:14 am