Environmental Studies Part 2/ Class 5/ REVISION questions

Subject: Environmental Studies: Part 2
Chapter 1. What is History?
EXERCISE

1. Fill in the blanks.
1. The Science that tries to understand past events is called.........
Ans: The Science that tries to understand past events is called History.

2. History is not written solely on the basis of .......
Ans: History is not written solely on the basis of imagination.

Q.2 Answer each question in one sentence.
1. What is the scientific method?
Ans: The method of using a number of different tests to determine whether the evidence is reliable is called the scientific method.

2. Of which action is India's Independence the result?
Ans:  The indian people fought against the British government as a result  India got Independence.

3. What does the study of History make possible?
Ans; The study of History makes it possible for us to study what is and what is not favourable for the progress of human society.

Q.3. Answer the following questions in brief.
1. Why is history considered to be a scientific discipline?
Ans: History uses the scientific method at every stage, namely, while looking for and collecting evidence, examining the evidence and while putting it together. When required, help is also taken from other Sciences. That is why, History is considered to be a scientific discipline.

2. What is it that puts obstacles in the way of village development?
Ans: If the people of a village work together and help one another, the village makes good progress. However, if the people cannot come together, it puts obstacles in the way of its development.

Q. 4 Complete the concept chart.
Ans:
Ans: 
Q.5 Classify the sources of history using the chart given here.
Sources of History- coins, letters, forts, traditional songs, pots, copper plates,  old structures,  stone inscriptions,  folk songs, pillars,  biographies,  rock-cut caves, folk tales.
Ans:
CHAPTER 2
2. History and The Concept of Time
Exercises:

Q. Fill in the blanks.
1. The calendar we use today is based on the …………
Ans: Common Era.
2. The period before the Common Era is known as the time …….
Ans: ‘Before Common Era’.
3. A period of daytime and the flowing night together make …….
Ans: One day
4. ………… means ‘in the year of Our Lord’.
Ans: Anno Domini
5.Common Era began in memory of …………
Ans: Jesus Christ.
6. The years of …………. are counted and written in reverse order.
Ans: Before Common Era or Before Christ.
7. ………… had started a new era or shaka known as ‘Rajyabhishek Shaka’ in 1674 AD.
Ans: Chatrapati Shivaji Maharaj
8. The earth formed …….. Billion years ago
Ans: 4.5

Q.2 Answer each question in one sentence.
1. 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 methods are used to estimate the age of the layers of soil and the remains found in them.

*2. How is the first century of the Common Era written?
Ans: The first century of the Common Era written as 1 to 100 AD or 1 to 100 CE.

3. Which method is used to measure time division?
Ans. A unilinear division of time is used to measure time.

4. How is the first century of the Before Common Era written?
Ans: The first century of the Before Common Era is written as 100 – 1 BCE.

5. Which era had started by Chatrapati Shivaji Maharaj?
Ans: Chatrapati Shivaji Maharaj had started ‘Rajyabhishek Shaka’.

6. Which two Eras are used in India?
Ans: Shalivahan shaka and Vikram samvat are two eras that is used in India.

7. Which community does use Shahenshahi Era?
Ans: The Parsi community in India uses the Shahenshahi Era.

8. How many years ago did the Earth form?
Ans: The earth formed 4.5 billion years ago.

9. Which are the two main periods of History?
Ans: The two main periods of History arePre-Historic period and Historic period.

10. What is Pre-Historic period?
Ans: Prehistory simply means ‘before history. The pre historic period for which no written records are available by which to write its history.

11. What is Historic period?
ANS: The historic period is the period for which written records are available using which we can write history.

12. How we can determine the time of the events?
Ans: With the help of the remains such as man-made artefacts and fallen structures and scientific methods we can determine the time of the events that took place thousands of years ago.

13. Which methods are known as ‘dating techniques.’?
Ans: Carbon – 14 analysis and Tree-rings analysis ( Dendrochronology) are known as dating techniques.


Chapter 
3. Life on the Earth
EXERCISES PAGE NO. 14

Q.1 Answer each question in one sentence.
*1. What instrument do we need to see a unicellular organism?
Ans: to see a unicellular organism we need a microscope.

*2. Where did the protozoa appear first?
Ans? The protozoa appeared first in water.

3. What are the names of planets?
Ans: The names of planets are: 1. Mercury 2. Venus, 3. Earth, 4. Mars, 5. Jupiter, 6. Saturn, 7. Uranus and 8. Neptune.

4.On which planet, life is existed?
Ans: On the Earth life is existed.

5. Can we see the protozoa with our naked eyes?
Ans: No, we can’t see the protozoa with our naked eyes.

6. What the living world on the earth does consist of?
Ans: The living world on the earth consists of plants and animals.

Q.2 Answer the following in brief.
*1. How were the sun and the planets in our solar system created?
Ans: Around 4.5 billion years ago, an enormous cloud of very hot gases and dust spinning at a great speed was formed in space. Its circular motion and great speed caused it to divide into several portions thus creating the sun and the planets.

*2. Write any two characteristics of animals.
Ans: Two characteristics of animals are as follows:
1. Animals Breathe.
2. Animals move in order to get food or other purposes.

3.How did the earth form?
Ans: It is believed that around 4.5 billion years ago an enormous cloud of very hot gases and dust spinning at a great speed caused it into several portions thus creating the sun and the planets which revolve around the sun. In this way the earth had formed.
4. Why do we require microscope to see protozoa?
Ans:  We require microscope to see protozoa because it is very tiny that can’t be seen with our naked eyes.

Chapter 
4.Mankind

2. In the course of time, a new species with characteristics different from the original species is created.
Ans: In the process of survival by adapting to environmental changes, certain internal physical changes occur in some animals of a species. Over a period of time, these internal changes become inherited characteristics seen in all following generations. Thus, a new species with characteristics different from the original species is created.

Q. Find the names of the planets in the box below.(direct answer).

Q.4 Fill in the blanks in the concept chart given below.
Evolution of animals


5. Evolution of Mankind
Date 20/09/2022
Exercises
Q. 1 Fill in the blanks
*1. Homo is a Latin word which means man.
* 2. The Neanderthals primarily lived in caves.
3. ‘Erectus’ means ‘the one who stands erect’.
4. ‘Homo sapiens’ is the name used for humans that were more advanced than the Neanderthals.
5. In Europe Homo sapiens is also known as “Cro-Magnon Man”.
Q. 2. Answer each question in one sentence.
*1. Who is said to have first made tools like the hand–axe?
Ans: Homo erectus said to have first made tools like the hand–axe.

2. Where did Neanderthal man find?
Ans: Neanderthal man found at Neanderthal, in Germany.

3. What is mean by Homo sapiens?
Ans: Homo sapiens mean Intelligent or Intellectual Man.

*4.  what is heredity?
Ans: The appearance and health characteristics of human being indicate their similarity to their ancestors. This is known as heredity.

Q.4 Read the clues given below and finds the words hidden in the box.
1. Humans who stood upright.
2.A sound that Neanderthals could make.
3 Humans who used their hands.
4  Homo sapiens sapiens began to grow this
in fields.
5 Pieces of stone used to make tools.
6 It kept Homo erectus warm although they
could not make it.
7 A country in which remains of Homo
habilis were found 
8  way of preparing food that
Neanderthals used.
9 A tool made by Homo erectus.
10  Homo sapiens could do this to make
pictures.
11 Humans could use their hands because
they learnt to stand on two of these.
12  The country in which remains of
Neanderthals were first found.
13. These were buried with them when Neanderthals died.
Ans:Q. 5 answer in one sentence.
1. What did Homo sapiens use to communicate?
Ans: Homo sapiens used words to communicate.

2.What did Neanderthals bury with the dead body?
Ans: Neanderthal buried tool, horns etc. with the dead body.

3. who did discover Homo habilis ?
Ans: The scientist Louis Leaky discovered Homo habilis.

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