7th Science First Term Summative Assessment Question Paper with Answers 2024-25 | Villupuram District

FIRST TERM - SUMMATIVE ASSESSMENT(SA) - 2024-25

Class: 7

Subject: SCIENCE

Time Allowed: 2.00 Hours

Max. Marks: 60

I. Choose the correct answer. 10x1=10

1.Light year is the unit of

• a) Distance
• b) Time
• c) Density
• d) Both Length and Time

Answer: a) Distance

2.An element which is always Lustrous, Malleable and Ductile is

• a) Non-metal
• b) Metal
• c) Metalloid
• d) Gas

Answer: b) Metal

3.Which one of the following is an example for a metal.

• a) Iron
• b) Oxygen
• c) Helium
• d) Water

Answer: a) Iron

4.Oxygen, Hydrogen and Sulphur are examples for

• a) Metals
• b) Non-metals
• c) Metalloids
• d) Inert Gas

Answer: b) Non-metals

5.The metal which is liquid at room temperature is

• a) Chlorine
• b) Sulphur
• c) Mercury
• d) Silver

Answer: c) Mercury

6.The basic unit of Matter is __________

• a) Element
• b) Atom
• c) Molecule
• d) Electron

Answer: b) Atom

7.__________ is positively charged.

• a) Proton
• b) Electron
• c) Molecule
• d) Neutron

Answer: a) Proton

8.Vegetative Propagation by leaves takes place in

• a) Bryophyllum
• b) Fungi
• c) Virus
• d) Bacteria

Answer: a) Bryophyllum

9.Reproductive part of a Plant is

• a) Root
• b) Stem
• c) Leaf
• d) Flower

Answer: d) Flower

10.Climbing roots are seen in

• a) Betel
• b) Black pepper
• c) Both of them
• d) None of them

Answer: c) Both of them

II. Fill in the blanks: 10x1=10

11.Eyes are considered as windows to the world.

12.Tuberculosis is caused by the Bacterium Mycobacterium tuberculosis.

13.The male Reproductive part of a Flower is Androecium / Stamen.

14.After Fertilization the ovules becomes seeds.

15.Breathing Roots are seen in mangrove plants.

16.The smaller particles found in the atom are called sub-atomic particles.

17.Graphite is the only Non - metal which conducts electricity.

18.The smallest particle of matter that can exist by itself is molecule.

19.There are 118 number of known elements.

20.The Rate of Change of velocity is acceleration.

III. Match the following: 5x1=5

Question	Correct Match
21. Displacement	Metre
22. Light travelling through vacuum	Uniform Velocity
23. Speed of Ship	Knot
24. Centre of gravity of geometrical shaped objects	Geometric centre
25. Stability	Larger base area

IV. Answer any Ten questions: 10x2=20

26.What is One light year?

A light year is the distance that light travels in one year in a vacuum. It is equal to 9.46 x 10¹² km.

27.Define - Astronomical Unit.

An astronomical unit (AU) is defined as the mean distance between the center of the Earth and the center of the Sun. 1 AU is approximately 149.6 million kilometers.

28.Length of Scale : metre :: Speed of Aeroplane : ?

Speed of Aeroplane : Knot

29.Define Molecule.

A molecule is the smallest particle of an element or a compound that can exist on its own and shows all the properties of that substance. It is formed when two or more atoms are chemically bonded together.

30.Write the Chemical formula for the following elements.

a) Hydrogen - H₂

b) Nitrogen - N₂

c) Ozone - O₃

d) Sulphur - S₈

31.Name the Sub - atomic particles.

The sub-atomic particles are:

• Protons
• Neutrons
• Electrons

32.What are the Characteristics of Proton?

• It is a positively charged particle.
• It is located in the nucleus of an atom.
• Its mass is approximately 1.672 x 10^-27 kg.

33.What are the two important parts of a Flower.

The two important (essential) parts of a flower are:

1. Androecium: The male reproductive part.
2. Gynoecium: The female reproductive part.

34.Define Pollination.

Pollination is the process of transferring pollen grains from the anther (male part) of a flower to the stigma (female part) of the same or another flower.

35.What is Hygiene?

Hygiene refers to a set of practices performed to preserve health and prevent the spread of diseases. It includes personal hygiene (e.g., hand washing, bathing) and environmental hygiene.

36.Give any two Communicable diseases, which spread in your locality during Monsoon.

Two communicable diseases that commonly spread during monsoon are:

1. Cholera
2. Typhoid

(Other examples: Dengue, Malaria, Common Cold)

37.What first aid will you provide in the case of Bruises?

For a bruise, apply an ice pack or a cold compress wrapped in a cloth to the affected area for 15-20 minutes. This helps to reduce swelling, pain, and bleeding under the skin.

V. Answer briefly: (Any 3) 3x5=15

38.Write about any three Communicable diseases in detail.

1. Cholera:

• Causative agent: Bacterium (Vibrio cholerae).
• Mode of transmission: Spreads through contaminated food and water.
• Symptoms: Severe diarrhoea, vomiting, and dehydration.
• Prevention: Drinking boiled water, maintaining proper sanitation, and vaccination.

2. Tuberculosis (TB):

• Causative agent: Bacterium (Mycobacterium tuberculosis).
• Mode of transmission: Spreads through the air when an infected person coughs or sneezes (droplet infection).
• Symptoms: Persistent cough, fever, weight loss, and night sweats.
• Prevention: BCG vaccination, avoiding contact with infected persons, and maintaining good hygiene.

3. Common Cold:

• Causative agent: Virus (Rhinovirus).
• Mode of transmission: Spreads through droplets from coughing or sneezing and by touching contaminated surfaces.
• Symptoms: Runny nose, sore throat, sneezing, and cough.
• Prevention: Frequent hand washing, avoiding touching the face, and covering the mouth and nose while coughing or sneezing.

39.Write a brief account on Pollination.

Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. Pollination is the first step in this process for flowering plants.

Types of Pollination:

1. Self-Pollination: The transfer of pollen grains from the anther to the stigma of the same flower or another flower on the same plant.
2. Cross-Pollination: The transfer of pollen grains from the anther of one flower to the stigma of a flower on another plant of the same species.

Agents of Pollination:

Pollination is carried out by various agents:

• Wind (Anemophily): Pollen is light and non-sticky, produced in large quantities (e.g., maize, pine).
• Water (Hydrophily): Occurs in aquatic plants (e.g., Vallisneria, Hydrilla).
• Insects (Entomophily): Flowers are often large, colourful, fragrant, and rich in nectar to attract insects like bees and butterflies.
• Animals (Zoophily): Birds, bats, and other animals help in pollination.

40.Draw the Structure of an Atom and Explain the position of the sub - atomic particles.

Structure of an Atom:

Position of Sub-atomic Particles:

An atom consists of a central nucleus and surrounding electrons. The positions are as follows:

• Nucleus: This is the dense, central core of the atom. It contains two types of sub-atomic particles:
  • Protons: They are positively charged particles.
  • Neutrons: They have no charge (they are neutral).
  The nucleus holds almost the entire mass of the atom and has an overall positive charge.
• Electron Shells/Orbits:
  • Electrons: They are negatively charged particles that revolve around the nucleus in fixed, circular paths called orbits or shells. Electrons are very light compared to protons and neutrons. The number of electrons is equal to the number of protons in a neutral atom.

41.Differentiate Metals and Non - Metals.

Property	Metals	Non-Metals
Lustre	They have a shiny surface (lustrous).	They have a dull appearance (non-lustrous), except for iodine and graphite.
Hardness	Generally hard and strong (except sodium, potassium).	Generally soft (except diamond).
State	Solid at room temperature (except mercury).	Exist as solids, liquids, or gases at room temperature.
Malleability	Can be beaten into thin sheets.	Cannot be beaten into thin sheets (brittle).
Ductility	Can be drawn into thin wires.	Cannot be drawn into wires (non-ductile).
Conduction	Good conductors of heat and electricity.	Poor conductors of heat and electricity (except graphite).

42.Write about the experiment to find the Centre of Gravity of the irregularly shaped plate.

Aim: To find the centre of gravity of an irregularly shaped lamina using a plumb line.

Materials Required: Irregularly shaped lamina (cardboard), retort stand, plumb line, pin, and pencil.

Procedure:

1. Make three small holes near the edge of the lamina and label them A, B, and C.
2. Suspend the lamina freely from hole A using the pin from the retort stand.
3. Hang the plumb line from the same pin and wait for it to come to rest.
4. Draw a straight line (AD) on the lamina along the thread of the plumb line.
5. Repeat the experiment by suspending the lamina from hole B. Draw another line (BE) along the plumb line.
6. Again, repeat the process by suspending the lamina from hole C and draw a third line (CF).

Observation: You will observe that all three lines (AD, BE, and CF) intersect at a common point.

Conclusion: The point of intersection, G, is the centre of gravity of the irregularly shaped lamina.

7th Standard English First Term Exam Question Paper with Answers 2024-25 | SA-1 | Samacheer Kalvi

7th Standard English First Term Exam Question Paper with Answers 2024-25 | SA-1

FIRST TERM - SUMMATIVE ASSESSMENT(SA) - 2024-25

Class: 7

Subject: ENGLISH

Time Allowed: 2.00 Hours | Max. Marks: 60

SECTION - I [VOCABULARY] (6 Marks)

Choose the appropriate Synonyms of the underlined words. (3x1=3)

1. They came across the stores of the sweet - Vendors All decorated so "gaily"

• a) Bright Colours
• b) Gradable
• c) Dull

Answer: a) Bright Colours

2. Grandfather says during a "Terrible" storm one of the houses was hit.

• a) Brilliant
• b) Fearful
• c) Minor

Answer: b) Fearful

3. Teacher, I will live in an Increasingly "Commercial" world.

• a) Help - Minded
• b) Love - Minded
• c) Money - Minded

Answer: c) Money - Minded

Choose the appropriate Antonyms of the underlined words. (3x1=3)

4. On both sides of road were big houses of the "rich".

• a) Poor
• b) Wealthy
• c) Popular

Answer: a) Poor

5. When he has passed through the ruins "late" at night.

• a) Gone
• b) Fast
• c) not on time

Answer: c) not on time
(Note: This option is a synonym for 'late'. The correct antonym, 'early' or 'on time', is not provided in the options. This appears to be an error in the question paper.)

6. My personal "success" will be determined by my ability to consume.

• a) Achieve
• b) Win
• c) Failure

Answer: c) Failure

SECTION - II (10 Marks)

7. Attach a suitable prefix and suffix to the words given below. (2x1=2)

a) Excite ______ (ful, ous, ment)

b) ______ happy. (un, after, im)

a) Excitement

b) unhappy

8. Fill in the blanks with (any, few, some, much). (2x1=2)

a) Do you have ______ coins with you?

b) I need ______ help.

a) Do you have any coins with you?

b) I need some help.

9. Give a relationship term for the clues given: (2x1=2)

a) Kith and Kin

b) Fore fathers

a) Relatives / Family and friends

b) Ancestors

10. Fill in the blanks with suitable Prepositions: (3x1=3)

a) Is your mother ______ home?

b) He has been absent ______ last week.

c) There is a bridge ______ the river.

a) Is your mother at home?

b) He has been absent since last week.

c) There is a bridge across the river.

11. Fill in the blanks with suitable Perfect Tense. (2x1=2)

a) We ______ (complete) our project by next week.

b) All was dark again. Night ______ (fall)

a) We will have completed our project by next week.

b) All was dark again. Night had fallen.

PART - II SECTION - I (PROSE) (12 Marks)

Answer any Four of the following questions: (4x2=8)

12. How did Hamid's friends enjoys the games in the fair?

Answer: Hamid's friends enjoyed the games in the fair by riding on the merry-go-round and the giant wheel. They spent their money on rides and toys, having a lot of fun.

13. Write about Hamid in one or two sentences?

Answer: Hamid was a poor, thoughtful four-year-old boy who lived with his grandmother. He was selfless and mature for his age, choosing to buy a pair of tongs for his granny instead of toys for himself at the fair.

14. What did suresh ask Usha? Why?

Answer: Suresh asked Usha if she was living in the ruins. He asked this because he saw her standing alone near the spooky, old building late in the evening.

15. What story did Grandfather tell them about the Haunted hill?

Answer: Grandfather told them the story of an Englishman whose house on the hill was struck by lightning during a terrible storm, killing him and his family. He said their ghosts still haunted the hill.

16. What should we learn from our teachers?

Answer: We should learn knowledge, discipline, good values, and how to become responsible and good human beings from our teachers.

17. What kind of learning brings joy to you?

Answer: (This is a personal response. A model answer is given below.)
Learning through practical activities, group projects, and exploring new topics through technology brings me joy. It makes learning interactive and memorable.

Answer the following questions in detail (any one) (1x4=4)

18. Write about Hamid and his Granny?

Answer: Hamid was a young, poor orphan boy who lived with his loving grandmother, Amina. Their bond was very special and filled with love and care. Amina worked very hard to provide for Hamid. Hamid, in turn, was extremely mature and caring for his age. At the Eid fair, instead of buying toys or sweets for himself, he spent his little money on a pair of tongs for his grandmother so she wouldn't burn her fingers while cooking. This selfless act showed his deep love for her and brought tears of joy and pride to Amina's eyes.

19. "Was it just the wind"? - What do you think Usha thought it was? Why?

Answer: Usha probably thought it wasn't just the wind. She might have believed it was a ghost or some other supernatural presence. She was alone in a dark, ruined building at night, and the stories her grandfather told about the haunted hill were fresh in her mind. The eerie sounds, the flickering of her lamp, and the spooky atmosphere would have made her imagination create frightening possibilities beyond just the wind.

SECTION - III (POETRY) (9 Marks)

Read the following sets of Poetic lines and Answer any three of the following. (3x1=3)

"The computer swallowed grandma".

21. Who swallowed whom?

Answer: The computer swallowed grandma.

'It devoured her completely"

22. Who does it refer to?

Answer: 'It' refers to the computer.

"And his horse in the silence champed the grasses of the forest's ferny floor;"

23. What was the horse doing?

Answer: The horse was chomping or biting noisily on the grasses on the fern-covered ground of the forest.

"Is there anybody there? said the traveller,"

24. Who is the speaker?

Answer: The traveller is the speaker.

"Speak gently - let not harsh words mar The good we might do here!"

25. Why should we speak gently?

Answer: We should speak gently so that our harsh words do not spoil or ruin the good things we could achieve.

Read the following stanza and Answer the questions given below. (3x1=3)

"I've searched through the recycle bin,
And files of every kind
I've even used the internet,
But nothing did I find".

26.

a) Pick out the rhyming words in the above lines.

b) Write the rhyming scheme of the given stanza.

c) Find out the alliteration words in first line.

a) Rhyming words: kind, find.

b) Rhyming scheme: aabb.

c) Alliteration: There are no alliterated words in the first line ("I've searched through the recycle bin").

Quote from memory. (1x5=5 - Marks seem to be a typo, likely 3 marks)

27. From: And his horse ...... To: ...... there? he said.

Answer:
And his horse in the silence champed the grasses
Of the forest’s ferny floor;
And a bird flew up out of the turret,
Above the Traveller’s head:
And he smote upon the door again a second time;
‘Is there anybody there?’ he said.

SECTION - III (SUPPLEMENTARY) (10 Marks)

28. Rearrange the jumbled sentences and Write them in the correct order. (5x1=5)

• a) Holmes found the tunnel from the cellar to the bank's strong room.
• b) Wilson was assigned to copy the encyclopedia.
• c) Wilson asked sherlock holmes for help.
• d) Wilson got the job in the red headed league.
• e) One day he found the notice that "The Red Headed League" was dissolved.

Correct Order:

1. d) Wilson got the job in the red headed league.
2. b) Wilson was assigned to copy the encyclopedia.
3. e) One day he found the notice that "The Red Headed League" was dissolved.
4. c) Wilson asked sherlock holmes for help.
5. a) Holmes found the tunnel from the cellar to the bank's strong room.

29. Read the following passage and answer the questions that follow: (5x1=5)

On monday morning, Tom sawyer was not excited about going to school. He had spent the weekend playing and did not want to return to his lessons. As he walked to school, he thought of ways to avoid going. When he reached the school gate, he saw his friends and remembered that school could be fun if he was with them. Tom decided to go inside and make the best of his day. He quickly joined his friends, Who were already chatting and laughing. By the end of the day, Tom realized that school wasn't so bad after all.

a) How did Tom sawyer feel about going to school on monday morning?

b) What did Tom think about doing instead of going to school?

c) What changed Tom's mind about going to school?

d) How did Tom feel when he saw his friends at the school gate?

e) What did Tom realize by the end of the day?

a) Tom Sawyer was not excited about going to school on Monday morning.

b) Tom thought of ways to avoid going to school.

c) Seeing his friends at the school gate and remembering that school could be fun with them changed his mind.

d) When he saw his friends, he was reminded that school could be fun with them, which made him decide to go inside.

e) By the end of the day, Tom realized that school wasn't so bad after all.

PART - IV (LITERARY WRITING) (10 Marks)

Answer any two: (2x5=10)

30. Give instructions to your friend to reach your house from school. Mention some landmarks that your friend should lookout for on his way.

Instructions to reach my house:

1. Start from the school and walk straight along TVK Street.
2. You will see a temple on your left. Continue walking past it.
3. When you reach the end of the street, turn right onto the Main Road.
4. Walk along the Main Road. You will pass a hospital on your left.
5. Just after the hospital, you will see another temple on your right.
6. My house is located right next to this temple.

31. Describe the picture in 50 words and Give a suitable title.

Title: A Serene Village Home

Description: This picture shows a peaceful rural scene with a small, tiled-roof house nestled among lush green trees. A person is sitting calmly near the entrance under a clear sky. A simple path leads to the house, depicting a tranquil and simple way of life close to nature.

32. Write a letter to your class teacher requesting him / her leave for three days attend your brother's marriage.

Leave Letter:

[Your Name],
VII Standard, 'A' Section,
[Your School Name],
[City Name].

20th October 2024.

The Class Teacher,
VII Standard, 'A' Section,
[Your School Name],
[City Name].

Respected Sir/Madam,

Subject: Request for leave for three days.

As my elder brother's marriage is scheduled to be held from 22nd October 2024 to 24th October 2024, I need to attend the ceremony with my family. Therefore, I will not be able to attend school on these three days.

I kindly request you to grant me leave for three days (from 22/10/2024 to 24/10/2024). I assure you that I will complete all my pending classwork after I return.

Thank you.

Yours obediently,
[Your Name]
Class VII, 'A' Section.