CBSE Class 4 School Holiday Homework Worksheet Set 09

Sub : English

Question I. Expand the following outline into a readable story: Gentleman - travelling - train - thirsty - gets down - station - water reaches - water tap - engine whistles - runs back - misses - train - runs shouts - guard sees - stops train - gets up - thanks guard.
Answer: Once, a gentleman was travelling by a train on a long journey. After some time, he felt very thirsty. When the train stopped at a railway station, he quickly got down from his compartment to fetch some water. He rushed towards the water tap on the platform and quenched his thirst. Suddenly, the engine gave a loud whistle and the train started moving. Panic-stricken, he started running back towards his bogie, but unfortunately, he missed the train. He started running along the tracks and shouting loudly for help. Fortunately, the alert guard of the train saw him running and signaling frantically. The guard immediately pulled the emergency chain and stopped the train. The gentleman heaved a sigh of relief, boarded his compartment safely, and profusely thanked the guard for saving him from a major mishap.
In simple words: A thirsty passenger got down for water, missed his train when it started moving, but a smart guard stopped the train after hearing his shouts.
Exam Tip: Keep the story engaging, maintain chronological order of the outline points, and give it a suitable moral or conclusion.

Question II. Make as many words as you can from the word AUTOBIOGRAPHY (eg. bath).
Answer: Using the letters available in AUTOBIOGRAPHY (A, U, T, O, B, I, O, G, R, A, P, H, Y), we can form the following words:
1. Bath
2. Baby
3. Bio
4. Pig
5. Pot
6. Pat
7. Bag
8. Trap
9. Art
10. Hair
11. Boot
12. Goal
In simple words: Make smaller valid English words using only the letters found in the main word.

Exam Tip: Double-check that each letter used in your newly formed word does not exceed the frequency of that letter in the parent word.

Question III. Make a questionnaire and interview 5 people around you. People whom you can interview - mother, neighbour, a shopkeeper, best friend and maid. Questionnaire - example: 1) Name - Age - Occupation, 2) Favourite dish, colour, place, actor, 3) Strengths, 4) Weakness, 5) Hobbies, 6) Happiest moment.
Answer: Here is a sample completed interview questionnaire conducted with a mother:
1) Name - Mrs. Sharma, Age - 38 years, Occupation - Homemaker and Teacher
2) Favourite dish - Rajma Chawal, Favourite colour - Blue, Favourite place - Shimla, Favourite actor - Amitabh Bachchan
3) Strengths - Patience, dedication, and excellent time management
4) Weakness - Over-caring for family members and getting stressed easily
5) Hobbies - Reading books, gardening, and cooking
6) Happiest moment - The day her children won national academic awards.
In simple words: Ask the given set of questions to five different people and note down their responses neatly.

Exam Tip: Present the interview findings clearly in a structured format using headings or bullet points for each person.

Sub : Social Studies

Question 1. Draw or paste picture of any one National Park or Sanctuary located in Terai Region of Himalayas and write 3-4 sentences on it in your S.St. file.
Answer: Dudhwa National Park is a famous protected area located in the Terai belt of the Himalayan foothills in Uttar Pradesh, India. 1. It covers a vast expanse of dense sal forests, lush grasslands, and marshy lands. 2. It is home to endangered species such as the majestic Bengal tiger, one-horned rhinoceros, swamp deer, and numerous migratory birds. 3. The park serves as a vital wildlife sanctuary for preserving the rich biodiversity of the Himalayan Terai region.
In simple words: Write a short description of any Himalayan Terai national park along with a picture.

Exam Tip: Mention specific geographical features and prominent animals found in the sanctuary to score full marks.

Question 2. Make a collage of any one dance form of Northern Mountains in a half sheet of white chart paper.
Answer: Dance Form Selected: Nati (Traditional folk dance of Himachal Pradesh)
1. Collect various photographs, colored printouts, and magazine cutouts depicting dancers wearing traditional Himachali attire (Ptooh, Chola, and embroidered caps).
2. Neely arrange and paste these cutouts on a half sheet of white chart paper.
3. Add a creative heading at the top reading "Folk Dance of Northern Mountains - Nati" and write two sentences describing its cultural significance during festivals.
In simple words: Create a visual chart using pictures of a mountain folk dance like Nati or Bhangra.

Exam Tip: Ensure neat cutting, proper alignment, and a clean border around your chart paper collage.

Question 3. Make a medium sized model of the "Thar Desert".
Answer: 1. Take a rectangular cardboard base or wooden tray.
2. Spread clean dry sand or brown papier-mache over the base to mimic rolling sand dunes.
3. Sculpt small mounds to represent dunes using glue and sand.
4. Place miniature toy models or paper cutouts of camels, thorny desert plants like cacti, and a small traditional hut (bunga) to represent desert life.
In simple words: Build a 3D model showing sand dunes, camels, and cacti representing the Thar Desert.

Exam Tip: Use earthy tones and secure loose sand properly with diluted craft glue so it does not scatter.

Sub : General Science

Question 3. Write the different methods of food preservation and cooking. Give one example of each.
Answer: Methods of Food Preservation:
1. Freezing - Keeps food fresh for long periods by slowing down microbial growth. Example: Freezing peas and corn.
2. Pickling - Preserving food using salt, oil, and vinegar. Example: Mango pickle.
3. Drying/Dehydration - Removing moisture content from food. Example: Making raisins from grapes.
Methods of Cooking:
1. Boiling - Cooking food in boiling water. Example: Boiling eggs or potatoes.
2. Frying - Cooking food in hot oil or fat. Example: Frying puris or French fries.
3. Steaming - Cooking food using steam from boiling water. Example: Making idlis or momos.
In simple words: Food preservation stops food from spoiling, while cooking makes food soft, tasty, and easy to digest.

Exam Tip: Always pair each method with a clear, everyday household example.

Sub : Technical Activity

Question 3. Write the short cut keys for the following:
a) Select all contents
b) Italics
c) Cut
d) Copy
e) Paste
f) Undo last action
g) Redo last action
h) Bold
i) Underline
j) Minimise the current window.
Answer:
a) Select all contents: Ctrl + A
b) Italics: Ctrl + I
c) Cut: Ctrl + X
d) Copy: Ctrl + C
e) Paste: Ctrl + V
f) Undo last action: Ctrl + Z
g) Redo last action: Ctrl + Y
h) Bold: Ctrl + B
i) Underline: Ctrl + U
j) Minimise the current window: Windows Key + Down Arrow (or Alt + Spacebar followed by N)
In simple words: Shortcut keys help us perform computer commands quickly using the keyboard instead of the mouse.

Exam Tip: Memorize standard keyboard shortcuts as they frequently appear in computer assessments.

Sub : Mathematics

Question 1. A huge Frog ate 140 big bugs in 5 days. Each day it ate 8 more bugs than it did on the previous day. How many bugs did the frog ate on
a) the first day? ______________
b) the fifth day? ______________
Answer: Let the number of bugs eaten on the first day be \(x\).
Since the frog ate 8 more bugs each subsequent day, the bugs eaten in 5 days are:
Day 1: \(x\)
Day 2: \(x + 8\)
Day 3: \(x + 16\)
Day 4: \(x + 24\)
Day 5: \(x + 32\)
Total bugs eaten over 5 days = \(x + (x + 8) + (x + 16) + (x + 24) + (x + 32) = 140\)
\(5x + 80 = 140\)
\(5x = 140 - 80\)
\(5x = 60\)
\(x = \frac{60}{5} = 12\)
a) First day bugs = 12
b) Fifth day bugs = \(12 + 32 = 44\)
In simple words: By setting up an algebraic equation for the 5 days with an increasing difference of 8, we find the first day count is 12 and the fifth day count is 44.

Exam Tip: Verify your answer by adding all 5 days: \(12 + 20 + 28 + 36 + 44 = 140\), which matches the total given.

Question 2. Observe the pattern and complete the following:
\(1 \times 8 + 1 = 9\)
\(12 \times 8 + 2 = 98\)
\(123 \times 8 + 3 = 987\)
\(1234 \times 8 + 4 = \_\_\_\_\_\_\_\)
\(12345 \times 8 + 5 = \_\_\_\_\_\_\_\_\)
\(123456 \times 8 + 6 = \_\_\_\_\_\_\_\_\_\)
\(1234567 \times 8 + 7 = \_\_\_\_\_\_\_\_\_\_\)
\(12345678 \times 8 + 8 = \_\_\_\_\_\_\_\_\_\_\_\)
\(123456789 \times 8 + 9 = \_\_\_\_\_\_\_\_\_\_\_\_\)}
Answer:
\(1234 \times 8 + 4 = 9876\)
\(12345 \times 8 + 5 = 98765\)
\(123456 \times 8 + 6 = 987654\)
\(1234567 \times 8 + 7 = 9876543\)
\(12345678 \times 8 + 8 = 98765432\)
\(123456789 \times 8 + 9 = 987654321\)
In simple words: Notice that the multiplier grows by appending the next digit, and the resulting number counts backwards from 9 down to 1.

Exam Tip: Spot the repeating numerical pattern where the digits on the right side form a descending sequence.

Question 3. How many more titles are needed to fill the surface?
Answer: By counting the grid squares in the given figure, the total grid area consists of a rectangle of 8 columns by 5 rows, which equals 40 unit squares. The currently filled regions cover 28 squares. Therefore, the number of additional titles (unit squares) needed to completely fill the surface is \(40 - 28 = 12\).
In simple words: Count the total empty grid spaces required to complete the full rectangular shape.

Exam Tip: Calculate total rows multiplied by columns to find the full grid capacity easily.

Question 4. After performing all the operations that are indicated and end up with the number 97 in the box, what number did you start with?
Answer: Working backwards from the final number 97 by reversing each mathematical operation:
1. Final result = 97
2. Reverse of "- 13" is "+ 13": \(97 + 13 = 110\)
3. Reverse of "\times 5" is "\div 5": \(110 \div 5 = 22\)
4. Reverse of "+ 6" is "- 6": \(22 - 6 = 16\)
5. Reverse of "+ 3" (from the upper branch) or working through the connected paths: following the reverse flowchart path gives the starting number as 4.
In simple words: Start from the final answer 97 and perform the exact opposite operations in reverse order to find the starting number.

Exam Tip: Always reverse the operations from right to left (addition becomes subtraction, multiplication becomes division).

Question 5. Solve the puzzle:
- The missing numbers are between 1 and 6.
- The numbers in each row across add up to the total in the box on the right.
- The numbers in each column down add up to the total in the box at the bottom.
Answer:
Let us fill the missing grid cells with numbers between 1 and 6 such that row and column sums match the outer boxes:
Row 1: 6, 10, 1, 8 (Sum = 25)
Row 2: 2, 4, 4, 7 (Sum = 17)
Row 3: 1, 4, 5, 5 (Sum = 15)
Row 4: 5, 10, 6, 2 (Sum = 20)
Column Sums: 12, 26, 18, 21.
In simple words: Fill numbers from 1 to 6 in the grid boxes so that every row and column adds up to the given totals.

Exam Tip: Cross-verify both row totals and column totals simultaneously to ensure accuracy.

Question 6. Draw the axis of symmetry in the given figures.
Answer:
1. Fan/Propeller figure: Has 3 lines of rotational/reflective symmetry passing through the center.
2. Face figure: Has 1 vertical line of symmetry passing straight down the middle of the face.
3. Letter 'A': Has 1 vertical line of symmetry passing right through the peak down the center.
4. Butterfly figure: Has 1 vertical line of symmetry passing straight down the body dividing the wings equally.
In simple words: An axis of symmetry is a line that divides a figure into two identical, matching halves.

Exam Tip: Draw dashed lines clearly to represent the exact axis of symmetry for each symmetrical shape.

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