Last Updated on October 31, 2024 by XAM CONTENT
Hello students, we are providing assertion reason questions for class 8 science. Assertion reason questions are the new question format that is introduced in CBSE board. The resources for assertion reason questions are very less. So, to help students we have created chapterwise assertion reason questions for class 8 science. In this article, you will find assertion reason questions for cbse class 8 science chapter 10 sound.
| Chapter | Sound |
| Type of Questions | Assertion Reason Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 8 |
| Subject | Science |
| Useful for | Class 8 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 8 Science Chapterwise Assertion Reason |
Assertion Reason Questions on Sound
Questions:
Q. 1. Assertion (A): Astronauts cannot hear each other in space.
Reason (R): The loudness of sound depends on its amplitude.
(a) Both assertion (A) and reason (R) are true and reason (R)Â is the correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true but reason (R)Â is not the correct explanation of assertion (A)
(c) Assertion (A) is true but reason (R) is false.
(d) Assertion (A) is false but reason (R) is true.
Difficulty Level: Medium
Ans. Option (b) is correct
Explanation: Astronauts are unable to hear in space because there is vacuum in space and sound needs a medium to travel.
Q. 2. Assertion (A): Jal tarang, ektara, veena all are musical instruments.
Reason (R): Sound is produced by vibrations in musical instruments.
(a) Both assertion (A) and reason (R) are true and reason (R)Â is the correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true but reason (R)Â is not the correct explanation of assertion (A)
(c) Assertion (A) is true but reason (R) is false.
(d) Assertion (A) is false but reason (R) is true.
Difficulty Level: Medium
Ans. Option (a) is correct
Explanation: In jal tarang sound is produced due to vibration in water. In ektara when string is struck it vibrates to produce sound. In veena the strings vibrations produce sound.
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Topics from which assertion reason questions may be asked
- Understand how sound is produced?
- Understand vibration as a cause of the sound.
- Learn different types of sound.
- Learn about the medium of sound propagation.
- Understand the terms Frequency, Amplitude and Time period of vibration.
- Learn about audible and inaudible sounds.
- To understand noise pollution and its ill effects.
Sound is anything that we hear. It is a form of energy. Vibrations in any object produces sound. This chapter deals with the concept of sound.
Helpful Links for CBSE Class 8 Science Preparation
Important Keywords from Sound
- Eardrum: The eardrum is a thin piece of tissue that separates the outer and middle ear. It vibrates when sound waves fall on it.
- Larynx: The larynx is known as a voice-box. It is an organ at the top of the neck and is responsible for the voice production.
- Windpipe: The tube-like vessel through which air enters the lungs is called windpipe.
- Oscillation: To and fro movement of any object. It is also called vibration.
- Pitch: The number of waves received by the listener. It depends on the frequency of the sound wave.
Frequently Asked Questions (FAQs) on Sound Class 8 Assertion Reason
Q1: What are Assertion-Reason questions?
A1: Assertion-Reason questions are a type of question format used in CBSE exams where two statements are provided: an Assertion (A) and a Reason (R). Students need to determine whether each statement is true or false and if the Reason correctly explains the Assertion.
Q2: How do Assertion-Reason questions differ from other question types?
A2: Unlike multiple-choice questions, Assertion-Reason questions require students to analyze the relationship between two statements. It’s not just about knowing the facts but understanding how they connect logically.
Q3: What steps should I follow to correctly answer Assertion-Reason questions?
A3: Follow these steps:
Read both statements carefully. Understand what each statement is saying.
Determine the truth value of each statement. Decide if each statement is true or false independently.
Analyze the relationship. If both statements are true, decide whether the Reason (R) correctly explains the Assertion (A).
Choose the correct option. Based on your analysis, select the appropriate answer from the given options.
Q4: What options are typically provided for Assertion-Reason questions?
A4: The typical options are:
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.
Q5: What should I check to determine if the Reason correctly explains the Assertion?
A5: Ensure that the Reason provides a logical explanation for the Assertion. Check if the Reason directly addresses the cause or basis of the Assertion and if they are contextually linked.
Q6: How can I improve my skills in answering Assertion-Reason questions?
A6: Practice regularly with sample questions and past papers. Focus on understanding the concepts thoroughly rather than rote memorization. Analyzing how different facts and concepts interrelate will enhance your ability to correctly answer these questions.
Q7: What are common mistakes to avoid when answering Assertion-Reason questions?
A7: Common mistakes include:
Not reading the statements carefully and missing key details.
Assuming the Reason explains the Assertion without checking the logical connection.
Confusing the order or relationship between the statements.
Overthinking and adding information not provided in the question.
Q8: What resources can help me practice Assertion-Reason questions?
A8: Use study guides specifically designed for Assertion-Reason questions. Online educational platforms and reference books for Class 8 Social Science also offer practice questions and explanations. xamcontent.com also provides assertion reason questions for cbse class 8 science.
