These Class 8 Science Curiosity Worksheet and Class 8 Science Chapter 3 Health: The Ultimate Treasure Worksheet with Answers are excellent for board exam practice.
Class 8 Science Chapter 3 Health: The Ultimate Treasure Worksheet
Class 8 Health: The Ultimate Treasure Worksheet
Worksheet On Health: The Ultimate Treasure Class 8 – Health: The Ultimate Treasure Worksheet Class 8
Let’s Begin
A. Multiple-Choice Questions
Question 1.
Which of the following is NOT a sign of good health?
(a) Constant tiredness
(b) Positive mindset
(c) Social well-being
(d) Physical fitness
Question 2.
Which of the following diseases spreads through mosquito bites?
(a) Typhoid
(b) Tuberculosis
(c) Dengue
(d) Measles
Question 3.
Ayurveda focuses on
(a) Only treating diseases
(b) Using chemicals
(c) Immediate surgeries
(d) A healthy lifestyle and balance.
Question 4.
Which disease does cowpox help protect against?
(a) Cholera
(b) Smallpox
(c) Asthma
(d) Cancer
Question 5.
This question consists of an Assertion (A) and a Reason (R). Read the Assertion and Reason and choose the appropriate answer.
Assertion (A): Antibiotics work only against bacterial infections.
Reason (R): Antibiotics work by attacking parts of bacterial cells that are not found in human or animal cells.
(a) Both A and R are true and R is the correct explanation of A,,
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 6.
This question consists of an Assertion (A) and a Reason (R). Read the Assertion and Reason and choose the appropriate answer.
Assertion (A): Diabetes is a common disease that is becoming more prevalent in both adults and children.
Reason (R): Diabetes is a chronic disease.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
B. State True (T) or False (F).
1. Personal hygiene has no role in preventing diseases. ________
2. Typhoid spreads through contaminated food and water. ________
3. Dr. Maharaj Kishan Bhan helped develop a vaccine for Rotavirus, which causes diarrhoea in children. ________
4. Covering the mouth while sneezing prevents the spread of airborne diseases. ________
5. Staying at home and resting when sick helps the body recover faster. ________
6. Doctors nowadays advise using more screen time for better health. ________
7. Taking too much iodine can cause problems in the thyroid glan(d) ________
C. Fill in the blanks.
1. Being happy helps us stay active and ________.
2. Diseases like obesity and cancer that do not spread from person to person are called ________ diseases.
3. Diagnosis and treatment are important for ________ and ________ diseases.
4. Wearing long-sleeved clothes and using mosquito nets help prevent diseases like ________ and ________
5. Dr. Kamal Ranadive studied how hormones and certain ________ are linked to cancer.
6. Good sanitation can greatly reduce the spread of ________ diseases.
D. Assign one word to the following terms.
1. The natural ability of the body to fight diseases. ________
2. Part of the body affected by Hepatitis A. ________
3. The first antibiotic discovered by Alexander Fleming. ________
4. Diseases that persist for a long time. ________
5. The traditional method used in India to protect against smallpox. ________
E. Match the diseases given in Column I with their suggested lifestyle changes given in Column II.
| Column I | Column Il |
| (i) Obesity | (a) Reduce salt and spicy food |
| (ii) Diabetes | (b) Quit smoking |
| (iii) High blood pressure | (c) Avoid oily and fried food |
| (iv) Heart disease | (d) Eating a balanced diet and exercise regularly |
| (v) Fatty liver | (e) Avoid sugary foods |
F. Arrange the steps of how vaccines work in the correct order by writing their correct sequence number in the space provide(d)
1. Suitable antibodies kill the weak or dead virus, and the body remembers how to fight the microbe.
2. The body’s immune system responds by producing antibodies.
3. This way, our body is better equipped to fight the virus when it plans to cause harm.
4. A weak or dead virus that causes the disease is introduced into the body through the vaccine.
G. Identify whether the pictures depict communicable or non-communicable diseases and match them accordingly.
Wonder Why?
A. Read the paragraph and answer the following questions.
During a health check-up camp at school, Adil learned that he had been vaccinated against several diseases as a chil(d) Curious, he asked the school nurse about how vaccines work. He later shared the information with his friends and encouraged them to get their missed vaccination.
Question 1.
What is the role of vaccines in preventing diseases?
________________________________________
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Question 2.
Name any two diseases that can be prevented through vaccination.
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Question 3.
What is acquired immunity?
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B. Your friend was diagnosed with typhoid, and the doctor prescribed an„antibioti(c) Eager to recover quickly and return to school, he took more them the recommended dose. However, instead of improving, his condition worsene(d) Can you think of why this might have happened? Evaluate
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C. If childhood vaccinations help our body produce antibodies and prepare us for future infections, then why do we still fall sick later in life? Analyse
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Learn By Doing
A. Look at the given picture and write the names of common methods of transmission of diseases labelled as 16.
B. Apply glitter on your hands and shake hands with a few other people in the group. Then, those people shake hands with one or two others, and so on. After a while, you will notice that even people who never directly touched you now have glitter on their hands. What does this activity demonstrates about how germs spread? Why is it important to maintain hygiene, and what precautions can be taken to prevent the spread of communicable diseases? Observe/Record
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C. Complete the table below for communicable diseases by filling in the correct causal agents, site of infection, symptoms, and preventive measures.
Explore With Curiosity
A. Look at the bar graph showing malaria cases reported in the hospitals of Delhi from January to December.
Now, answer the following questions.
Question 1.
In which three months were the malaria cases highest?
________________________________________
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Question 2.
What might be the possible reasons for the increase in cases during the peak months?
________________________________________
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Question 3.
Suggest a few preventive measures the community can take to reduce the spread of malaria before the high-risk season.
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B. Read the paragraph and answer the following questions. Analyse
Aarav heard that some teenagers in his neighbourhood were using harmful substances just to appear “cool.” They had started smoking, drinking, and using other harmful substances to fit in with their peers. Aarav was disturbed by this and decided to speak to a trusted adult.
Question 1.
Why do some young people develop harmful habits due to peer pressure?
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Question 2.
What would you do if you found out that a friend had started smoking?
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Question 3.
Suggest ways in which communities can raise awareness about the dangers of substance abuse.
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C. Look at the given pictures (I and II) of India Gate and answer the following questions.
Question 1.
Which picture (I or II) would have a better Air Quality Index (AQ4)? Also, define AQI.
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Question 2.
Which picture is more likely to lead to breathing problems? Name one such health problem.
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Word Puzzle
Complete the crossword with the help of the given clues.
DOWN
1. Body’s ability to resist or fight diseases
4. Giving a vaccine to build protection against a disease
5. Harmful germs like bacteria, viruses, or fungi that cause disease
7. Disease outbreak that spreads across many countries
9. Condition where breathing becomes difficult
ACROSS
2. Signs you feel when you are sick, like fever or pain
3. Ancient Indian system of medicine
6. Disease in which abnormal cells grow uncontrollably in the body
8. Condition of having excessive body fat
9. Medicines that kill or stop the growth of bacteria
Suggested Activities
A. Go for a walk near your school/home/society. Identify the mosquito breeding areas. Make a checklist:
- Remove stagnant water
- Use mosquito nets/repellents
- Spread awareness
Create flyers/posters or prepare a street play to educate people about preventing mosquito- borne diseases like dengue/malari(a)
B. Create a step-by-step chart of CPR dos and don’ts, including appropriate guidance for responding when someone suddenly faints. If the person is not breathing, call for help and begin CPR immediately. Conduct a mock drill to practise staying calm and helping the person regain consciousness.