RBSE Class 4 EVS We Learnt and Understood-2 Question Answer

To deepen your understanding, the Class 4 EVS RBSE Solutions and RBSE Class 4 EVS We Learnt and Understood-2 Question Answer provided here offer valuable practice and clarity.

RBSE Class 4th EVS We Learnt and Understood-2 Question Answer

(A) Oral Questions-
Conversation based questions-

Question 1.
State three measures to maintain cleanliness in your surroundings.
Answer:
Three measures to maintain cleanliness in our surroundings are-

• Do not throw garbage on road.
• Throw garbage only in dustbin.
• Clean the drains from time to time.

Question 2.
What problems arise in cleaning after heavy rains in Rajasthan?
Answer:
After heavy rains in Rajasthan, plastic bottles, bags and garbages get accumulated on the roadside;. drains get filled with water due to which their water comes on roads. This makes the road muddy.

Question 3.
Discuss the effects of litter and plastic waste on health?
Answer:
Germs grow very fast from plastic waste and litter, that spreads diseases. Plastic waste often block the drains. Animals also suffer health problems by eating plastic waste.

Question 4.
Share your experience of observing your own shadow at different times of the day (morning, afternoon, evening).
Answer:
The above work is to be done by students themselves.

Question 5.
Describe an interesting shadow experience at a fair or festival in Rajasthan (e.g.- how do the shadows look in the Diwali lights?)
Answer:
The above work is to be done by students themselves.

Question 6.
If there were no Sun, what would our shadows be like? Express your views on this.
Answer:
If there were no Sun, then our shadow is formed in artificial light. Our shadow will be long and deep.

Question 7.
Why it is difficult to travel in the desert?
Answer:
It is difficult to travel in the desert because there sandstorm comes suddenly. There is no means to hide from this storm. While walking the feet get sunk in the sand.

Question 8.
Why is the camel called the ship of the desert?
Answer:
Camel is the main mode of transportation in the desert, its feet are broad, flat and padded so it can walk fast in desert. Therefore it is called the ship of the desert.

Question 9.
If the monkey, the rabbit and the tortoise travelled alone in the desert, what problems would they face?
Answer:
If the rabbit, tortoise and monkey travel alone, they would have to face problems like sand storms and their feet would sink in the sand while walking on sand.

Question 10.
Why is the pilgrimage to Ramdevra considered important?
Answer:
Ramdevji’s temple is in Ramdevra (Runicha) of Jaisalmer. Therefore it is important from religious point of view.

Question 11.
What special arrangements are made for pilgrims during the foot journey (Padyatra)?
Answer:
Special arrangements such as free food (Ramrasoda) are made for pilgrims during the foot journey.

Question 12.
What is Pokhran-II or Operation Shakti?
Answer:
India conducted five underground Nuclear Tests on 11 and 13 May 1998. This test was named Operation Shakti.

(B) Written assessment-
Choose the correct answer-

Question 1.
Which diseases can spread due to dirt?
(a) Malaria
(b) Cold and cough
(c) Impaired eyesight
(d) None
Answer:
(a) Malaria

Question 2.
Which is the oldest mode of transport used?
(a) Camel
(b) Elephant
(c) Bicycle
(d) Car
Answer:
(a) Camel

Question 3.
In which month is Ramdevra fair organised?
(a) Bhadrapada
(b) Karthik
(c) Chaitra
(d) Magh
Answer:
(a) Bhadrapada

Question 4.
Which is the correct place to throw garbage?
(a) Drain
(b) Dustbin
(c) Road
(d) Ground
Answer:
(b) Dustbin

Question 5.
What can be the proper use of wet waste?
(a) for burning
(b) for making fertilizer
(c) for flowing into the drain
(d) All
Answer:
(b) for making fertilizer

Question 6.
When is the shadow shortest ?
(a) Morning
(b) Afternoon
(c) Evening
(d) Never
Answer:
(b) Afternoon

Question 7.
Why does a solar eclipse occur?
(a) The Earth comes in front of the Sun
(b) The Moon comes between the Sun and the Earth
(c) The Sun comes between the Moon and the Earth
(d) None of these
Answer:
(b) The Moon comes between the Sun and the Earth

Question 8.
Which is the most suitable animal for travelling in the desert?
(a) Lion
(b) Elephant
(c) Camel
(d) Sheep
Answer:
(c) Camel

Question 9.
What does a camel store in its body that allows it to live without water?
(a) Blood
(b) Fat
(c) Bone
(d) Water
Answer:
(d) Water

Question 10.
When is Ramdevra Yatra organized?
(a) During Holi
(b) In the month of Bhadrapada
(c) During Deepawali
(d) On Makar Sankranti
Answer:
(b) In the month of Bhadrapada

Question 11.
What is the purpose of serving the pilgrims (Jaatrus)?
(a) Doing business
(b) Doing good deeds
(c) Entertainment
(d) To impress someone
Answer:
(b) Doing good deeds

Fill in the blanks-

1. Millet flour is more nutritious and _______ than wheat flour.
Answer: light

2. Manoj’s family earns some money by selling the _______ they get from Kajri.
Answer: milk

3. The most commonly used beverage in Rajasthan is _______.
Answer: Rabdi

4. The main animals living in the desert are _______ and _______.
Answer: camel, chinkara

5. Due to plastic waste during heavy rains, _______ get blocked.
Answer: drains

6. Separating waste allows to _______ to be reused.
Answer: wastes

7. Animals get sick from eating _______.
Answer: plastic bags

8. When light strikes an object, a _______ is formed behind it.
Answer: shadow

9. The shortest shadow during the day is at _______ time.
Answer: noon

10. During a solar eclipse, _______ comes between the Sun and the Earth.
Answer: Moon

11. Trees like _______ and _______ are found in the desert area of Rajasthan.
Answer: Rohida, Acacia

12. A camel’s feet are _______ and _______ which allows it to walk easily in the desert.
Answer: broad, padded

13. Baba Ramdev temple is located in _______ district.
Answer: Jaisalmer

14. People set up _______ to serve the pilgrims (Jaatarus).
Answer: Ramrasoda

Match the Column-

Column ‘A’	Column ‘B’
1. Millet	(a) By insects
2. Pollination	(b) Animal husbandry
3. Milk production	(c) Potter
4. Clay pots	(d) Coarse grain
5. Wet garbage	(e) Put in recycling bin
6. Plastic waste	(f) Use for making compost
7. Afternoon time	(g) Specific position of the Moon, Earth and Sun
8. Solar eclipse	(h) Shortest shadow
9. Camel	(i) Major tree of the desert
10. Khejri	(j) Ship of the desert
11. Pokhran	(k) Pilgrims of Ramdevra Yatra
12. Jaataru	(l) Nuclear test

Answer:

Column ‘A’	Column ‘B’
1. Millet	(a) By insects
2. Pollination	(b) Animal husbandry
3. Milk production	(c) Potter
4. Clay pots	(d) Coarse grain
5. Wet garbage	(e) Put in recycling bin
6. Plastic waste	(f) Use for making compost
7. Afternoon time	(g) Specific position of the Moon, Earth and Sun
8. Solar eclipse	(h) Shortest shadow
9. Camel	(i) Major tree of the desert
10. Khejri	(j) Ship of the desert
11. Pokhran	(k) Pilgrims of Ramdevra Yatra
12. Jaataru	(l) Nuclear test

Write True/False-

1. Millets, sorghum, maize are coarse grains.
Answer: True

2. In villages, farming is done only by machines.
Answer: True

3. Birds help in seed dispersal.
Answer: True

4. Insects have no role in pollination.
Answer: False

5. Water conservation benefits agriculture.
Answer: True

6. Plastic can be reused.
Answer: True

7. There is no harm in throwing garbage in the open.
Answer: False

8. Cleanliness reduces diseases.
Answer: True

9. Shadows never form at night.
Answer: False

10. The size of a shadow always remains the same.
Answer: False

11. The desert always has cold weather.
Answer: False

12. Ramdevra yatra is performed only by people from Jaisalmer district.
Answer: False

13. Nuclear test was conducted in Pokhran.
Answer: True

Answers in two to three lines-

Question 1.
What are coarse grains?
Answer:
Millet, Sorghum, Finger millet, Kodo millet and maize are coarse grains. The brans of these grains are thicker than wheat and rice.

Question 2.
How does water scarcity in Rajasthan affect agriculture?
Answer:
In Rajasthan, crop yield is low due to water scarcity. Agriculture is completely dependent on Monsoon.

Question 3.
What is pollination and by which organisms does pollination occure?
Answer:
Pollination means the movement of the seeds of a plant or tree from one place to another. Pollination is done by bees, bumblebees, butterflies and birds.

Question 4.
What type of business flourish in villages?
Answer:
Businesses like farming, tailoring, weaving, painting, shoe making, jewellery and pottery making etc. flourish in the villages.

Question 5.
Why are plants and animals important for the environment?
Answer:
Trees and plants make the environment clean by absorbing polluted gases from environment. Pollination of trees and plants is done by animals.

Question 6.
What problem arises from throwing garbage here and there?
Answer:
When garbages are thrown here and there, it get accumulate in the streets with rain and wind. This gives rise to the germs that spread diseases. The environment gets polluted due to the odour spreading in the streets.

Question 7.
Where do people in your neighbourhood throw garbage?
Answer:
The people around us throw the garbage into the municipal corporation’s garbage truck.
They also throw garbages in public dustbin.

Question 8.
What are benefits of segregating wastes?
Answer:
By segregating wastes, we get to know that which wastes can be used for composting. We also get to know about hazardous and recyclable wastes.

‘Question 9.
Why does a shadow form?
Answer:
When the light hits an opaque object a shadow is formed.

Question 10.
Why does the size of a shadow change during the day?
Answer:
The size of the shadow changes during day time depending on whether the sun rays fall slantly or directly.

Question 11.
What does a first aid kit contain? Make a list.
Answer:
A first aid kit contains following items

1. Scissors
2. Dettol
3. Bandage
4. Cotton
5. Painkiller tablets
6. Anti-septic cream.

Question 12.
How can a camel live without water in desert?
Answer:
A camel can drink 100 to 150 litres of water at a time therefore it can survive without drinking water for 5 to 6 days.

Question 13.
What measures do animals take to protect themselves from desert storms?
Answer:
Animals close their eyes to protect themselves from desert storms. They also try to protect themselves by hiding behind the bushes.

Question 14.
Why is the Ramdevra Yatra performed?
Answer:
There is a famous temple of Baba Ramdevji in Ramdevra (Runicha) village of Jaisalmer district. Every year a huge fair is held here in the month of Bhadon. People come here to see the fair and to have darshan of Ramdevji.

Question 15.
What is the importance of serving pilgrims (Jaatarus)?
Answer:

• Lakhs of people come to visit Ramdevra temple. These pilgrims are called ‘Jaatarus’.
• Serving them is a symbol of devotion and it is considered a virtuous act.

Question 16.
What kind of sights are seen during the foot journey (Padyatra)?
Answer:
During the foot journey we saw the region of Thar Desert, people dressed in colourful clothes, shops of toys and sweets etc.

(C) Do it yourself-

Question 1.
Survey the garbage around your house and make a table-
immmmmmmmmmmmmm
Answer:
immmmmmmmmmmmm