NCERT Solutions Class 4 Environmental Studies Chapter 24 Home And Abroad

Page 195

Q.1 Why do you think many trees cannot grow in desert areas?

Ans. Dry climate and very little water.

Q.2 do you have any relatives who live in another country?

Ans. Yes. My uncle lives in USA.

Page 196

Q.1. How long they lived there? Did they go there for studies or for work?

Ans. My uncle lives there for five years.

Q.2. Look at these currency notes. Write the value of each note in the box near its picture.

Ans.

Page 197

Q.1. To which country does this currency belong?

Ans. India. It is written on the currency.

Q.2. Whose picture can you see on the notes?

Ans. Mahatma Gandhi.

Q.3. Can you find any number on the notes (other than the value)?

Ans. Yes.

Q.4. Do you think that two notes can have the same number?

Ans. No. two notes cannot have the same number.

Q.5. Take a ten rupee note and observe it carefully. How many languages can you see on the note.

Ans. Sixteen.

Match the coin (Page 197)

Q.1. How many of these do you recognise?

Ans. All.

Q.2. What is written on each coin other than the value?

Ans. India.

Q.3. Look at these notes. Do they all belong to India? Put a circle around notes that are not Indian. Find out which country do they belong to.

Ans. No.

1. England, 2. India, 3. USA, 4. USA, 5. Saudi Arab, 6. India, 7. China, 8. Oman, 9. China, 10. China, 11. Japan, 12. India, 13. England.

Question. The bar graph represents the information given in the table below. Choose the letter showing the bar that matches with Uranus

(a) A
(b) B
(c) C
(d) D

Answer : C

Question. Arrange the following from the smallest to the largest.
Moon, Sun, Earth, Jupiter
(a)  Moon, Jupiter, Earth, Sun 
(b) Moon, Earth, Jupiter, Sun 
(c) Moon, Earth, Sun, Jupiter
(d) Earth, Moon, Sun, Jupiter

Answer : B

Question. The picture shows Ketan and his friends playing with a string-telephone. Archana is speaking. Ketan and Raghav are trying to listen. Which of them can hear her speak?

(a) Both of them can hear equally clearly.
(b) Neither of them can hear.
(c) Only Raghav can hear clearly.
(d) Only Ketan can hear clearly.

Answer : D

Question. One difference between a computer and a TV is that
(a) a TV can show pictures while a computer cannot.
(b) a TV can play sounds while a computer cannot.
(c) a TV needs a cable or antenna to work while a computer does not.
(d) a TV needs electricity to work while a computer does not.

Answer : C

Question. An electric bulb works on electricity and gives out light. We can say that a bulb changes electrical energy into light energy. In which of these is electrical energy changed into heat energy?
(a) a ceiling fan
(b) a water heater
(c) A mixer
(d) A television

Answer : B

Question. Which of these is an ADVANTAGE of a mobile phone as compared to a normal phone?
(a) Mobile phones are cheaper to use.
(b) Mobile phones can be carried by the user.
(c) Mobile phones can be used in small villages.
(d) Mobile phones cannot be lost or stolen easily.

Answer : B

Question. Identify the device that one wears behind his ear.

Answer : D

Question. A magnet is likely to stick to
(a) ribbons
(b) a shirt collar.
(c) shoes
(d) belt buckle.

Answer : D

Question. Which of these CANNOT store a picture?

Answer : B

Question. Are there nights when the moon never appears?
(a) No, though sometimes it is hidden by clouds.
(b) No, sometimes it does not appear for a part of the night, but then it appears.
(c) Yes, but there is only one night in a year when the moon never appears.
(d) Yes, the moon does not appear at all on some nights, throughout the year.

Answer : D