{"ok":true,"q":"Speed of Sound","n":80,"results":[{"id":"class_09\/science\/chapter_12_sound","title":"Chapter 12 — Sound","class_num":9,"subject":"science","subject_label":"Science","summary":"Chapter 'Sound' introduces sound as a mechanical wave produced by vibrating objects and transmitted only through a material medium (solid, liquid or gas). It explains the longitudi","topic":"Speed of sound","anchor":"topic-7"},{"id":"class_08\/science\/chapter_13_sound","title":"Chapter 13 — Sound","class_num":8,"subject":"science","subject_label":"Science","summary":"Chapter: Sound (Science – VIII) introduces the nature, production and propagation of sound and its practical applications. Students learn that sound is produced by vibrating bodies","topic":"Speed of Sound and Quantitative Relations","anchor":"topic-4"},{"id":"class_08\/science\/chapter_15_some_natural_phenomena","title":"Chapter 15 — Some Natural Phenomena","class_num":8,"subject":"science","subject_label":"Science","summary":"This chapter introduces two important natural phenomena that directly affect human life: lightning and earthquakes. It explains the physical causes behind thunder and lightning (bu","topic":"","anchor":""},{"id":"class_11\/physics\/chapter_07_waves","title":"Chapter 7 — Waves","class_num":11,"subject":"physics","subject_label":"Physics","summary":"Chapter “Waves” (Class XI, Physics – Part II) introduces mechanical waves as organised disturbances that transport energy and information without bulk transport of matter. The chap","topic":"","anchor":"sec-practice"},{"id":"class_04\/environmental_studies\/chapter_02_ear_to_ear","title":"Chapter 2 — Ear To Ear","class_num":4,"subject":"environmental_studies","subject_label":"Environmental Studies (EVS)","summary":"Introduction: \"Ear to Ear\" introduces children to the sense of hearing. The chapter explains how we hear, names the main parts of the ear in simple words, and uses everyday example","topic":"Properties of Sound","anchor":"topic-4"},{"id":"class_11\/geography\/chapter_04_distribution_of_oceans_and_continents","title":"Chapter 4 — Distribution Of Oceans And Continents","class_num":11,"subject":"geography","subject_label":"Geography","summary":"Introduction: This chapter introduces the global arrangement of oceans and continents — the basic framework of Earth’s surface. It names and locates the five major oceans (Pacific,","topic":"","anchor":"sec-practice"},{"id":"class_05\/environmental_studies\/chapter_01_super_senses","title":"Chapter 1 — Super Senses","class_num":5,"subject":"environmental_studies","subject_label":"Environmental Studies (EVS)","summary":"Introduction: \"Super Senses\" (Looking Around – 5, Chapter) introduces students to the five basic human senses — sight, hearing, smell, taste and touch — and then expands to the ext","topic":"Hearing (Ears)","anchor":"topic-4"},{"id":"class_01\/computer_studies\/chapter_03_parts_of_a_computer","title":"Chapter 3 — Parts Of A Computer","class_num":1,"subject":"computer_studies","subject_label":"Computer Studies","summary":"Chapter: Parts of a Computer — This chapter introduces young learners to the basic parts of a computer in simple, friendly language. The introduction explains what a computer is an","topic":"Speakers","anchor":"topic-6"},{"id":"class_02\/computer_studies\/chapter_02_parts_of_a_computer","title":"Chapter 2 — Parts Of A Computer","class_num":2,"subject":"computer_studies","subject_label":"Computer Studies","summary":"Introduction: This chapter introduces young learners to the main parts of a computer using simple words and pictures. It explains what a computer is, shows the visible parts (monit","topic":"Speakers and Headphones","anchor":"topic-9"},{"id":"class_03\/environmental_studies\/chapter_07_saying_without_speaking","title":"Chapter 7 — Saying Without Speaking","class_num":3,"subject":"environmental_studies","subject_label":"Environmental Studies (EVS)","summary":"Introduction: \"Saying Without Speaking\" introduces children to the many ways people communicate without using words. Through gestures, facial expressions, pictures, signs, symbols ","topic":"Alarms, Bells and Sirens","anchor":"topic-8"}]}