Access our website’s free PDF downloads of NCERT Solutions for Class 8 Science Chapter 13.
NCERT Class 8 Study Chapter 13 Audio Solutions provides students with accurate solutions to all exercises and questions from NCERT Class 8 textbooks based on agreement with the CBSE board. Here students get the best study materials like NCERT Class 8 Solutions prepared by a team of experts with good education knowledge. Submitting and solving these solutions will be one of the best ways to pass the exam and score well. The solutions are easily accessible and reliable and come with step-by-step instructions that will make you understand the solution most easily. Practicing the solutions is one of the most effective strategies to score good exam marks.
These questions are expressed using language that eighth-grade students can understand. This will help them understand the content and thus promote effective and efficient learning. The solutions have been reviewed by a team of experts and have been carefully designed to score maximum marks in CBSE exams. NCERT Solutions helps you become familiar with the content given in the book.
NCERT Solutions for Class 8 Science Chapter 13: Free PDF Download
Summary
NCERT Solutions covers answers to questions presented in CBSE Class 8 Science along with additional questions, model questions, important questions from past papers or worksheets, and test instructions. Voice Matters CBSE Class 8 section, students need to prepare for this section to score well in the exam. NCERT Class 8 Science Audio Solutions are one of the best tools to prepare for Class 8 Science every year. The solutions for this chapter are also available for free in PDF format and can be downloaded by students.
Sound
- Sound is produced by vibrating objects
- Sound is produced by people
- Sound must have a medium to propagate
- We hear the sound with our ears
- Amplitude, period, and frequency of vibration
- Audible and inaudible hearing.
- sound
- Green and music
- Green pollution
Central Board of Secondary Education is one of the most popular schools in India. CBSE follows the NCERT syllabus and conducts separate exams for Class 10 and Class 12. Grade 8 is one of the most important stages in a student’s educational life as it lays the foundation for the concepts taught in Unit 10.
Sound is produced by vibrating objects. We hear all the sounds around us. Below are some important points to remember in this section.
- The ear detects sound vibrations and sends signals to the brain. This process is called a hearing.
- Frequency is expressed in Hertz (Hz).
- Bad sound is called noise.
- Noise should be reduced
- Plants on the road and in other places can reduce noise.
- Sound propagates in a medium (gas, liquid, or solid). He cannot walk in space.
- Excessive or unwanted noise may cause noise. Noise can cause health problems for people.
- The higher the vibration frequency, the higher the pitch and the heavier the sound.
- Efforts should be made to reduce noise.
Phonics is an important subject for eighth graders because it covers very basic concepts. To avoid problems in understanding advanced concepts, students must have a clear understanding of the subject.
What are the subjects and topics covered in Chapter 13 of NCERT Solutions for Class 8 Science?
NCERT 8th Class Science Chapter 13 topics and contents are as follows:
Sound is produced by vibrating objects
Sound is produced by humans
Sound must have a propagation medium
We hear sound through our ears
Amplitude, duration, and frequency of vibrations
Audible and inaudible sound
Green and music
Noise pollution
How can I obtain full marks in Chapter 13 of NCERT Solutions for Class 8 Science?
NCERT Solutions for Class 8 Science Chapter 13 have been prepared by experienced teachers after extensive research of each concept. Students can refer to these solutions to fully understand the concepts in the chapter while solving problems in the textbook. These solutions can be accessed online and offline according to the student’s needs. EducationBharat001 has answers in PDF format which students can download and use to solve their doubts instantly.
Chapter 13 of NCERT Solutions for Class 8 Science covers the concepts of audible and inaudible sounds.
The human ear can easily perceive frequencies between 20 Hz and 20 kHz. Therefore, sound whose frequency is not between 20 Hz and 20 kHz is called noise. The human ear cannot perceive sounds vibrating less than 20 times per second (i.e. 20 Hz). Therefore, all sounds below this frequency cannot be heard by humans. In most cases, frequencies above 20,000 vibrations per second (20 kHz) cannot be detected by the human ear, and the amplitude of the wave depends on the noise level. Therefore, frequencies below 20 Hz and above 20 kHz fall into the category of hearing loss. Step-by-step explanations in simple language increase students’ confidence in taking the exam without fear.