SCIENCE (W)

Chapter 1: Nutrition in PlantsRead More➔

Worksheet: Nutrition in Plants

Name:____________________ Class: VII Date: ______________

Objective: To assess the understanding of the concepts related to nutrition in plants.

Section A: Multiple Choice Questions (1 mark each)

  1. What is the primary pigment responsible for photosynthesis? a. Red b. Green c. Blue d. Yellow

  2. Which part of the plant absorbs water and minerals from the soil? a. Stem b. Root c. Leaf d. Flower

  3. During photosynthesis, oxygen is released from which part of the plant? a. Root b. Stomata c. Leaf d. Flower

  4. Which gas is essential for photosynthesis? a. Oxygen b. Carbon dioxide c. Nitrogen d. Hydrogen

  5. Plants that obtain nutrients from decaying organic matter are called: a. Autotrophs b. Parasites c. Heterotrophs d. Saprophytes

Section B: Fill in the Blanks (1 mark each)

  1. ________ is the process by which plants make their food.

  2. The tiny pores on the surface of leaves through which gases enter and leave are called __________.

  3. Plants that obtain nutrients from dead and decaying matter are called __________.

Section C: Short Answer Questions (2 marks each)

  1. Explain the process of photosynthesis in plants.

  2. Differentiate between autotrophic and heterotrophic modes of nutrition.

Section D: Application-Based Questions (3 marks each)

  1. Observe the given diagram of a leaf and label the parts involved in photosynthesis.

Leaf Diagram

  1. Classify the following plants into autotrophic and heterotrophic categories. Explain your classification.
PlantMode of Nutrition
Rose 
Mushroom 
Sunflower 
Venus Flytrap 

Section E: Long Answer Question (5 marks)

  1. Describe the importance of photosynthesis in the ecosystem. How does it contribute to the balance of nature?

Note:

  • Ensure to answer all the questions.
  • Write neatly and legibly.
  • Diagrams should be labeled appropriately.
  • For diagram-based questions, ensure proper labeling and use a pencil.

Feel free to adapt this worksheet to better fit the specific requirements and preferences of your class or educational institution.

 Chapter 2: Nutrition in AnimalsRead More➔

Worksheet: Nutrition in Animals

Name: ____________________________ Class: VII Date: __________

Instructions:

  • Answer the following questions.
  • Use the information from your textbook and class notes.

Multiple Choice Questions (1 mark each)

  1. What type of nutrition do humans exhibit? a) Herbivores b) Carnivores c) Omnivores d) Autotrophs

  2. Which of the following is an example of a herbivore? a) Lion b) Cow c) Eagle d) Human

  3. What is the process by which food is taken into the body? a) Absorption b) Assimilation c) Ingestion d) Digestion

  4. Where does the digestion of carbohydrates primarily occur in the human digestive system? a) Stomach b) Small intestine c) Mouth d) Large intestine

  5. Which organ stores bile in the digestive system? a) Stomach b) Liver c) Gallbladder d) Pancreas

Fill in the Blanks (1 mark each)

  1. The process of breaking down complex food substances into simpler forms is called ___________.

  2. _________ is the enzyme present in saliva that breaks down starch into sugars.

  3. Nutrients are absorbed into the blood mainly in the ____________.

Short Answer Questions (2 marks each)

  1. Explain the difference between herbivores, carnivores, and omnivores, giving one example of each.

  2. Describe the journey of food through the digestive system, highlighting the main functions of each digestive organ.

Long Answer Question (3 marks)

  1. Create a labeled diagram of the human digestive system. Briefly explain the function of each organ involved in the digestive process.

Feel free to modify or add questions based on the depth of coverage in your class. Ensure that the questions align with the specific objectives and content covered in your curriculum.

Chapter 3: Fibre to FabricRead More➔

Class 7 Science Worksheet

Chapter 3: Fibre to Fabric

Instructions: Answer the following questions based on your understanding of the chapter.

1. Match the Following:

Match the fibre with its source.

FibreSource
a. Cottoni. Silkworm
b. Woolii. Cotton Plant
c. Silkiii. Sheep
d. Nyloniv. Chemical Processing

2. True or False:

Circle ‘T’ for True and ‘F’ for False.

a. __________ Cotton is obtained from the fleece of sheep.

b. __________ Jute is a synthetic fibre.

c. __________ Silkworms are involved in the production of silk fibres.

d. __________ Spinning is the process of making fibres from cotton.

3. Fill in the Blanks:

Fill in the blanks with the appropriate words.

a. ____________ is the process of taking out threads from the cocoon.

b. ____________ is a natural fibre obtained from plants.

c. The process of arranging two sets of yarns together to make fabric is called ____________.

d. ____________ is a synthetic fibre.

4. Sequence the Following:

Put the following stages of making fabric from fibres in the correct order.

a. Spinning b. Weaving c. Harvesting d. Ginning

5. Short Answer Questions:

a. Explain the process of obtaining wool from sheep.

b. What is sericulture? Explain the life cycle of a silkworm.

c. Why is the process of ginning necessary for cotton fibres?

d. List three uses of synthetic fibres.

Note: This worksheet is a general guideline. You may modify it as per the specific requirements of your class or as per any updates to the CBSE pattern. Ensure that students refer to their textbooks and class notes while answering the questions.

Chapter 4: Acids, Bases and SaltsRead More➔

Class 7 Science Worksheet

Chapter 4: Acids, Bases, and Salts

Section A: Multiple Choice Questions

  1. What is the pH of a neutral substance? a. 0 b. 7 c. 14 d. 1

  2. Which of the following is a strong acid? a. Lemon juice b. Vinegar c. Hydrochloric acid d. Milk

  3. What happens when an acid reacts with a base? a. Formation of water and salt b. Formation of water and sugar c. Formation of gas and water d. Formation of a new acid

  4. The substance that can be used to neutralize a base is called: a. Antacid b. Indicator c. Buffer d. Acid

  5. Which of the following is a natural indicator? a. Litmus b. Phenolphthalein c. Methyl orange d. Universal indicator

Section B: Fill in the Blanks

  1. Acids taste _________.

  2. The pH scale ranges from ____ to ____.

  3. A substance with a pH of 9 is considered a _________.

  4. ________ is a common household base.

  5. During a neutralization reaction, a ________ and ________ are formed.

Section C: Short Answer Questions

  1. Explain the importance of pH in everyday life.

  2. Write the chemical equation for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH).

Section D: Application-Based Questions

  1. Imagine you are a farmer. How could the knowledge of acids and bases be beneficial in agriculture?

  2. Explain how the use of acidic substances in daily life can affect the environment.

Section E: Practical Skills

  1. Perform a simple experiment to test the pH of common household substances and record your observations.

Instructions:

  • Answer all the questions.
  • For practical skills, write a detailed procedure and record your observations.
  • Be precise and clear in your answers.

This worksheet covers a range of question types, from multiple choice to short answer and application-based questions. It is designed to assess students’ understanding of the key concepts related to acids, bases, and salts as per the CBSE pattern.

Chapter 5: Physical and Chemical ChangesRead More➔

Class: 7 | Subject: Science | Chapter: 5 – Physical and Chemical Changes

Name: ___________________________________ Date: _________________

A. Multiple Choice Questions (1 mark each)

  1. Which of the following is a physical change? a. Burning of paper b. Melting of ice c. Rusting of iron d. Cooking an egg

  2. What happens to the mass during a chemical change? a. It decreases b. It increases c. It remains the same d. It varies

  3. Identify the chemical change among the following: a. Chopping wood b. Mixing sugar in water c. Digestion of food d. Cutting paper

  4. What type of change is cutting a sheet of paper into pieces? a. Physical change b. Chemical change

  5. During a physical change, the particles of a substance: a. Change their identity b. Do not change their identity

B. True or False (1 mark each)

  1. Heating water until it boils is a chemical change. (True/False)

  2. Rusting of iron is a physical change. (True/False)

  3. Mixing salt in water is an example of a chemical change. (True/False)

C. Fill in the Blanks (1 mark each)

  1. Burning of wood is a _____________ change.

  2. In a chemical change, new substances with different _____________ are formed.

D. Short Answer Questions (2 marks each)

  1. Explain the difference between a physical change and a chemical change.

  2. Give one example of a physical change and one example of a chemical change that you observe in your daily life.

E. Application-based Questions (3 marks each)

  1. You observed the rusting of iron. Explain the process of rusting and mention how it is different from other changes.

  2. Design an experiment to show a physical change. List the materials you would need and the steps to perform the experiment.

Teacher’s Note: Encourage students to provide detailed and accurate answers. This worksheet is designed to assess their understanding of the concepts covered in the chapter.


Chapter 6: Respiration in OrganismsRead More➔

Worksheet: Respiration in Organisms

Name: _______________________ Class: VII Date: ______________

I. Multiple Choice Questions (1 mark each)

  1. What is the primary purpose of respiration in organisms? a. To produce carbon dioxide b. To produce oxygen c. To release energy from food d. To store energy

  2. Which of the following is a product of the process of respiration? a. Oxygen b. Glucose c. Carbon dioxide d. Water

  3. Where does the process of respiration take place in cells? a. Nucleus b. Mitochondria c. Cell membrane d. Endoplasmic reticulum

  4. During which stage of respiration is most of the energy released? a. Glycolysis b. Krebs cycle c. Electron transport chain d. Fermentation

  5. Why do organisms respire? a. To release energy b. To take in oxygen c. To eliminate carbon dioxide d. All of the above

II. Fill in the Blanks (1 mark each)

  1. The process of breaking down glucose to release energy is called _______________.
  2. _______________ is the process of releasing energy from food without using oxygen.
  3. The muscular movement that helps in breathing is called _______________.
  4. The waste product produced during respiration is _______________.
  5. The tiny air sacs where gas exchange takes place in the lungs are called _______________.

III. True or False (1 mark each)

  1. True/False: Respiration only occurs in animals.

  2. True/False: Oxygen is necessary for the process of respiration.

  3. True/False: Fermentation is an aerobic process.

  4. True/False: The respiratory system helps in the exchange of gases between the body and the environment.

  5. True/False: The primary function of the respiratory system is to transport nutrients.

IV. Short Answer Questions (2 marks each)

  1. Explain the difference between aerobic and anaerobic respiration.

  2. What is the role of the respiratory system in humans?

V. Diagram-Based Questions (3 marks each)

  1. Label the parts of the respiratory system in the diagram below:

Respiratory System Diagram

VI. Application-Based Questions (4 marks each)

  1. Describe a real-life scenario where anaerobic respiration might occur in the human body.

  2. How does regular exercise affect the respiratory system? Explain.

VII. Long Answer Question (5 marks)

  1. Explain the process of respiration in organisms, highlighting its various stages and the importance of each stage.

Note: Answer all questions.

Chapter 7: Transportation in Animals and PlantsRead More➔

Class: 7 Subject: Science Chapter: Transportation in Animals and Plants

Worksheet

Name: ___________________________________ Date: _______________

Section A: Multiple Choice Questions (1 mark each)

  1. What is the main function of xylem in plants? a) Transportation of nutrients b) Transportation of water and minerals c) Transportation of food d) None of the above

  2. Which part of the plant is responsible for transporting food? a) Phloem b) Xylem c) Stomata d) Roots

  3. The human circulatory system is responsible for transporting: a) Water b) Nutrients c) Blood d) Oxygen

  4. What is the function of red blood cells in the human circulatory system? a) Transport oxygen b) Transport nutrients c) Fight infections d) Both a and b

Section B: Fill in the Blanks (1 mark each)

  1. The ________ vessels in plants are responsible for transporting water and minerals.

  2. Blood is pumped by the ________ to different parts of the body.

  3. In plants, the process of ________ helps in the movement of water through the xylem.

Section C: Short Answer Questions (2 marks each)

  1. Explain the role of phloem in plants.

  2. How does the structure of xylem vessels contribute to their function in plants?

  3. Briefly describe the importance of the circulatory system in humans.

Section D: Long Answer Question (5 marks)

  1. Compare and contrast the transportation systems in plants and animals. Highlight at least three similarities and three differences.

Section E: Practical Application (3 marks)

  1. Scenario: You are a plant biologist. Describe an experiment you could conduct to demonstrate the process of water transportation in plants.

Note:

  • Attempt all questions.
  • Write your answers in the space provided.
  • Be concise and clear in your responses.

This worksheet is a general template and may need adaptation based on the specific content covered in your class. Adjust the difficulty level according to the understanding and progress of your students.

Chapter 8: Reproduction in PlantsRead More➔

Class 7 Science Worksheet

Chapter 8: Reproduction in Plants

I. Multiple Choice Questions (1 mark each)

  1. What is the primary purpose of reproduction in plants? a) To produce oxygen b) To grow taller c) To ensure the survival of the species d) To make the plant look beautiful

  2. Which of the following is an example of asexual reproduction in plants? a) Seed formation b) Pollination c) Budding d) Fertilization

  3. What is the male reproductive part of a flower called? a) Stigma b) Anther c) Ovary d) Style

  4. Which type of reproduction involves the formation of seeds? a) Sexual reproduction b) Asexual reproduction c) Vegetative reproduction d) None of the above

  5. What is the process by which pollen grains reach the stigma of a flower? a) Fertilization b) Germination c) Pollination d) Photosynthesis

II. True or False (1 mark each)

  1. __________ Asexual reproduction involves the fusion of male and female gametes.

  2. __________ Spore formation is a type of asexual reproduction.

  3. __________ The ovule develops into a seed after fertilization.

  4. __________ Vegetative propagation involves the use of seeds for reproduction.

  5. __________ Pollination is the transfer of pollen from the anther to the stigma.

III. Short Answer Questions (2 marks each)

  1. Explain the difference between sexual and asexual reproduction in plants.

  2. Describe the process of pollination in flowers.

IV. Diagram-based Questions (2 marks each)

  1. Label the parts of a flower involved in sexual reproduction.

Flower Diagram

  1. Draw a flowchart depicting the stages of seed formation in a flowering plant.

V. Application-based Questions (3 marks each)

  1. Think of a real-life example of vegetative propagation. Describe how it occurs and its significance.

  2. Discuss the importance of bees in the process of pollination.

VI. Long Answer Question (5 marks)

  1. Elaborate on the role of seeds in the process of reproduction in flowering plants. Include the stages from pollination to seed germination.

Answer Key:

  1. c) To ensure the survival of the species
  2. c) Budding
  3. b) Anther
  4. a) Sexual reproduction
  5. c) Pollination
  6. False
  7. True
  8. True
  9. False
  10. True
  11. Sexual reproduction involves the fusion of male and female gametes, while asexual reproduction does not require the fusion of gametes and is characterized by the production of offspring genetically identical to the parent plant.
  12. Pollination is the transfer of pollen from the anther to the stigma of a flower, facilitating fertilization.
  13. (Label the diagram)
  14. (Draw a flowchart)
  15. (Provide an example and describe the process and significance)
  16. (Discuss the importance of bees in pollination)
  17. (Elaborate on the role of seeds in reproduction)

This worksheet is designed to cover various aspects of the chapter, including knowledge, understanding, application, and analysis of the topic. Teachers can modify or add questions based on the specific focus of their teaching and the needs of their students.

 Chapter 9: Motion and TimeRead More➔

Class 7 Science – Worksheet

Chapter 9: Motion and Time

Name: ___________________________ Roll No.: ______ Date: __________

Section A: Multiple Choice Questions (1 mark each)

  1. What is the formula for calculating speed?

    a) Speed = Distance × Time

    b) Speed = Distance ÷ Time

    c) Speed = Time ÷ Distance

    d) Speed = Distance + Time

  2. Identify the type of motion when an object moves in a straight line and covers equal distances in equal intervals of time.

    a) Circular motion

    b) Linear motion

    c) Oscillatory motion

    d) Rotational motion

  3. If an object covers 100 meters in 20 seconds, what is its speed?

    a) 5 m/s

    b) 10 m/s

    c) 15 m/s

    d) 20 m/s

Section B: Fill in the blanks (1 mark each)

  1. The SI unit of time is ________.

  2. In uniform motion, the object covers equal ________ in equal intervals of time.

  3. ________ is the distance traveled per unit of time.

Section C: Short Answer Questions (2 marks each)

  1. Explain the difference between speed and velocity.

  2. A car travels 200 kilometers in 4 hours. Calculate its speed.

  3. Describe an example of non-uniform motion from your daily life.

Section D: Application-based Questions (3 marks each)

  1. Scenario: A bicycle travels 30 meters in 10 seconds.

    a) Calculate the speed of the bicycle.

    b) If the bicycle maintains this speed, how far will it travel in 1 minute?

  2. Scenario: An object moves in a circular path. Explain how its distance and displacement differ.

Section E: Diagram-based Questions (4 marks)

  1. Label the parts of the following diagram representing uniform motion.

Uniform Motion Diagram

Section F: Long Answer Question (5 marks)

  1. Explain the concept of acceleration with a real-life example. How is it different from constant velocity?

Note: Show all your calculations, and be clear and concise in your answers.

Feel free to adjust the difficulty and length of the worksheet based on your specific class requirements.

Chapter 10: Electric Current and its EffectsRead More➔

Worksheet: Electric Current and its Effects

Name:_____________________ Class:________ Date:________

I. Multiple Choice Questions (1 mark each)

  1. What is the flow of electric charge in a closed circuit called? a. Voltage b. Electric current c. Resistance d. Conduction

  2. Which of the following is a good conductor of electricity? a. Wood b. Plastic c. Copper d. Rubber

  3. In a simple electric circuit, the bulb goes off when the circuit is broken. What does this demonstrate? a. The circuit is incomplete. b. The bulb is faulty. c. The battery is dead. d. There is too much resistance.

  4. What is the role of a switch in an electric circuit? a. To provide energy b. To control the flow of electric current c. To increase resistance d. To connect the circuit

II. True/False Statements (1 mark each)

  1. Electric current can flow through both conductors and insulators. (True/False)

  2. The flow of electric current is always from positive to negative. (True/False)

  3. Rubber is a good conductor of electricity. (True/False)

  4. An open circuit is a complete circuit where current can flow. (True/False)

III. Fill in the Blanks (1 mark each)

  1. Electric current is measured in ____________.

  2. The device used to break or complete an electric circuit is called a ____________.

  3. Materials that do not allow electric current to pass through them easily are called ____________.

  4. The safety device that automatically breaks an electric circuit in case of overload is called a ____________.

IV. Short Answer Questions (2 marks each)

  1. Explain the term “electric current” in your own words.

  2. Give two examples each of conductors and insulators.

  3. Why is it important to use insulating materials in the covering of electric wires?

V. Application-Based Questions (3 marks each)

  1. Imagine you have a circuit with a bulb, a battery, and a switch. Draw the circuit diagram and explain how the switch controls the flow of electric current.

  2. You are given three materials – copper, plastic, and wood. Predict and explain which of these materials would be suitable for making the handle of a screwdriver. Justify your answer.

VI. Practical-Based Question (4 marks)

  1. Conduct an experiment to test the conductivity of different materials. List the materials you used and record your observations. Draw a conclusion based on your findings.

VII. Long Answer Question (5 marks)

  1. Describe the importance of electric current in our daily lives. Provide examples of how electric current is used in various applications.

Note: Answer all questions. Write neatly and legibly. Use proper units where applicable.

Feel free to modify the worksheet based on the specific emphasis and depth you want to provide in your class.

Chapter 11: LightRead More➔

Worksheet: Light

Name: ____________________________________ Date: ______________

Instructions: Answer the following questions based on your understanding of the chapter.

1. Define the term “light” and list two of its properties.

a. ____________________________________________________________

b. ____________________________________________________________

2. Explain how light travels. Use a diagram if needed.

3. Identify the sources of light in your surroundings. Give at least three examples.

a. ____________________________________________________________

b. ____________________________________________________________

c. ____________________________________________________________

4. What is reflection of light? Provide an example from your daily life.

5. State the laws of reflection and explain each briefly.

a. Law 1: ________________________________________________________

b. Law 2: ________________________________________________________

6. Conduct a simple experiment at home using a mirror. Observe and explain the reflection angles.

7. Define refraction of light. How does it occur when light passes through different mediums?

8. What is the refractive index, and how does it affect the speed of light in a medium?

9. Give an example of a real-life application of refraction.

10. Draw a labeled diagram of an optical instrument that uses refraction.

11. Briefly explain the role of lenses in optical instruments.

12. Conclusion: What have you learned about light in this chapter?

13. Additional Questions (Optional):

a. What is the difference between reflection and refraction?

b. How does light behave when it passes from air to water?

Note: Remember to review your answers and ask your teacher if you have any doubts.

Chapter 12: Forests – Our LifelineRead More➔

Worksheet: Forests – Our Lifeline

Name: ________________________ Class: 7 Date: _______________

Section A: Multiple Choice Questions (1 mark each)

  1. What is the primary role of forests in maintaining ecological balance? a) Providing timber b) Regulating climate c) Increasing pollution d) None of the above

  2. Which of the following is a component of a forest ecosystem? a) Concrete buildings b) Plastic waste c) Trees d) All of the above

  3. Why are forests considered our lifeline? a) Because they provide free wood b) Because they support life on Earth c) Because they are a source of pollution d) Because they are a source of noise

  4. What is the main focus of forest conservation? a) Destroying forests for development b) Preserving and managing forests sustainably c) Ignoring the importance of wildlife d) Using forest resources without any limit

  5. Which of the following is a human activity that harms forests? a) Afforestation b) Sustainable logging c) Deforestation d) Planting more trees

Section B: Short Answer Questions (2 marks each)

  1. List any two benefits of forests for wildlife.

  2. Explain why forests are important in regulating the climate of the Earth.

  3. Define afforestation. Why is it important?

  4. Describe the interdependence of different components in a forest ecosystem.

  5. What are the consequences of deforestation on the environment?

Section C: Long Answer Questions (3 marks each)

  1. Elaborate on the role of forests in maintaining biodiversity.

  2. Discuss three ways in which individuals can contribute to forest conservation.

Note: The number of questions and marks assigned can be adjusted based on the specific requirements and pattern of the CBSE examination. Additionally, ensure that the questions align with the content covered in the chapter.

Chapter 13: Wastewater StoryRead More➔

Worksheet: Wastewater Story

Name: ______________________________________ Class/Section: _____________

I. Multiple Choice Questions (1 mark each)

1. What is the primary source of wastewater in urban areas?

  • a. Industrial discharge
  • b. Agricultural runoff
  • c. Domestic sewage
  • d. Rainwater

2. Which of the following is NOT a method of wastewater treatment?

  • a. Sedimentation
  • b. Incineration
  • c. Filtration
  • d. Disinfection

3. What is the purpose of the ‘primary treatment’ in wastewater treatment plants?

  • a. Removing large objects
  • b. Killing bacteria
  • c. Settling of suspended solids
  • d. Disinfecting water

II. True/False (1 mark each)

4. True or False: Wastewater from industries can be released without treatment.

5. True or False: The final stage of wastewater treatment involves the removal of bacteria.

III. Short Answer Questions (2 marks each)

6. Explain the importance of treating wastewater before releasing it into the environment.

7. Name any two diseases that can be caused by the consumption of water contaminated with untreated sewage.

IV. Diagram-based Question (3 marks)

8. Label the diagram below to illustrate the stages involved in the secondary treatment of wastewater.

Wastewater Treatment Diagram

V. Application-based Question (4 marks)

9. Imagine you are a member of a local environmental club. Propose two initiatives your club could take to create awareness about the importance of wastewater treatment in your community.

VI. Long Answer Question (5 marks)

10. Describe the process of ‘aeration’ in wastewater treatment. Why is it an essential step in the secondary treatment process?

Note: Answer all the questions.

This worksheet covers a variety of question types, including multiple choice, true/false, short answer, diagram-based, application-based, and a long answer question. It aims to assess different cognitive skills and knowledge levels of students regarding the topic “Wastewater Story.” Adjustments can be made based on the specific emphasis of your teaching and the learning objectives of your students.

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