Notes of Class 4, Environment std 4 sub env chap 13.pdf - Study Material
Page 1 :
Choose the correct alternative from those given below each question, and write its index-letter (alphabet) in the, (2) Which vehicle can move in a river ?, (1) From where does a river originate?, (4) Which of the following will change the colour of water, (3) Water of which of the following is drinkable ?, A RIVER'S JOURNEY, 13, 1., provided against, each question:, A. From the sea, B. From the mountain, C. From the plain, D. From the ground, (2) Which vehicle can move in a river ?, A. Car, B. Scooter, C. Truck D. Boat, (3) Water of which of the following is drinkable ?, A. Of the sea, B. Of a river, C. Of a puddle, D. Of a lake, when added to it?, A. Sugar B. Lemon juice C. Milk D. Salt, (5) Which of the following substances does not dissolve, in water ?, A, A. Sand B. Salt, C. Sugar D. Edible soda, (6) Due to which of the following reasons does water get, polluted ?, A. Due to washing clothes in the river, B. Due to bathing cattle in the river, C. Due to pouring industrial waste into the river, D. All of the above reasons, (7) Which of the following birds catches fish from a river or, a lake ?, A. A crow B. An egret C. A cockatoo D. A swan, (8) Which of the following substances does not mix with water ? C, A. Salt B. Sugar C. Oil, D. Lemon juice, 2. Fill in the blanks in each sentence with an appropriate word:, (1) The river completes its journey when it meets theSec, bocts, and set them sailing in small, (2) Children make paper, puddles during the rainy season., (3) Many times when there is very heavy rainfall, there is a, flood, in the river., (4) River water is sweet whereas sea water is SCuty, t1de., salty, (5) Waves are seen in the sea when it is
Page 2 :
VIKAS LOOKING AROUND WORKBOOK STANDARD 4 (PART 2), VIKAS LOOKING AROUND WORKBOOK: STANDARD 4 (PART 21, (6) India's largest river which is also considered holy is the, Gramga, (7) The largest river of Gujarat is Nazmona, 3. Put a V mark in front of the statements that are True and, x in front of those that are False:, (1) There are rivers in each village., (2) Aquatic creatures die due, to water pollution caused by, industrial waste., (3) It is our duty to keep river water clean., (4) Water of rivers that originate from mountains is colourful. X, (5) Lake water is cleaner than river water., (6) There are ebbs and tides in a sea., (7) Most of the rivers meet some sea., 4. Match the columns appropriately : [Write the correct index-letter, (alphabet) from Column 'B' in the answer column.], Column 'A', Ans., Column 'B', (1) The sea, -LE, (A) in a village gets filled up during the rainy, season., (2)A river -)), (3)A lake -CA, (A), A(B)is a pothole filled with water during rainy, season., (4)A puddle -_B), (C) is surrounded by gardens on all sides., (D) flows along turning and twisting pathways., (E) is known as 'sagar/ samudra' in Hindi, Gujarati.