{"id":128743,"date":"2021-02-18T06:15:01","date_gmt":"2021-02-18T06:15:01","guid":{"rendered":"https:\/\/www.indcareer.com\/schools\/?p=128743"},"modified":"2023-09-15T07:34:33","modified_gmt":"2023-09-15T07:34:33","slug":"ncert-solutions-for-7th-class-science-chapter-4-heat","status":"publish","type":"post","link":"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/","title":{"rendered":"NCERT Solutions for 7th Class Science: Chapter 4-Heat"},"content":{"rendered":"\n<p>Class 7: Science Chapter 4 solutions. Complete Class 7 Science Chapter 4 Notes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ncert-solutions-for-7th-class-science-chapter-4-heat\"><strong>NCERT Solutions for 7th Class Science: Chapter 4-Heat<\/strong><\/h2>\n\n\n\n<p>NCERT 7th Science Chapter 4, class 7 Science Chapter 4 solutions<\/p>\n\n\n\n<p>Page No: 45<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-exercises\">Exercises<\/h2>\n\n\n\n<p><strong>1. State similarities and differences between the laboratory thermometer and the clinical thermometer.<\/strong><\/p>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<p><strong>Similarities:<br><\/strong>(i) both made up of uniform glass tube.<br>(ii) both contain mercury.<br>(iii) both have bulb at one end.<br>(iv) both generally have celcius scale.<\/p>\n\n\n\n<p><strong>Differences:<br><\/strong>(i) Range of laboratory thermometer is from -10\u00b0C to 110\u00b0C while range of clinical thermometer is from&nbsp;35\u00b0C to 42\u00b0C.<br>(ii) Laboratory thermometer is used to take the reading of temperature in laboratory while clinical thermometer is used to measure the temperature f human body.<br>(iii) Mercury level falls when removed from the source in case of laboratory thermometer while in case of clinical thermometer &nbsp;<\/p>\n\n\n\n<p><strong>2. Give two examples each of conductors and insulators of heat.<\/strong><\/p>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<p>Examples of conductors : Iron, Copper<br>Examples of insulators : Plastic, Wood<\/p>\n\n\n\n<p><strong>3. Fill in the blanks :<br>(a) The hotness of an object is determined by its __________.<br>(b) Temperature of boiling water cannot be measured by a _____________ thermometer.<br>(c) Temperature is measured in degree ______________.<br>(d) No medium is required for transfer of heat by the process of __________.<br>(e) A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of ______________.<br>(f ) Clothes of ______________ colours absorb heat better than clothes of light colours.<\/strong><\/p>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<p>(a) The hotness of an object is determined by its temperature.<\/p>\n\n\n\n<p>(b) Temperature of boiling water cannot be measured by a clinical thermometer.<\/p>\n\n\n\n<p>(c) Temperature is measured in degree Celsius.<\/p>\n\n\n\n<p>(d) No medium is required for transfer of heat by the process of radiation.<\/p>\n\n\n\n<p>(e) A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of conduction.<\/p>\n\n\n\n<p>(f) Clothes of dark colours absorb heat better than clothes of light colours.<\/p>\n\n\n\n<p>Page No: 46<\/p>\n\n\n\n<p><strong>4. Match The following.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>Column I<\/strong><\/td><td><strong>Column II<\/strong><\/td><\/tr><tr><td><strong>(i) Land breeze blows during<\/strong><\/td><td><strong>(a) summer<\/strong><\/td><\/tr><tr><td><strong>(ii) Sea breeze blows during<\/strong><\/td><td><strong>(b) winter<\/strong><\/td><\/tr><tr><td><strong>(iii) Dark coloured clothes are preferred during<\/strong><\/td><td><strong>(c) day<\/strong><\/td><\/tr><tr><td><strong>(iv) Light coloured clothes are preferred during<\/strong><\/td><td><strong>(d) night<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Column I<\/td><td>Column II<\/td><\/tr><tr><td>(i) Land breeze blows during<\/td><td>(d) night<\/td><\/tr><tr><td>(ii) Sea breeze blows during<\/td><td>(c) day<\/td><\/tr><tr><td>(iii) Dark coloured clothes are preferred during<\/td><td>(b) winter<\/td><\/tr><tr><td>(iv) Light coloured clothes are preferred during<\/td><td>(a) summer<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>5. Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing.<\/strong><\/p>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<p>We wear more layers of clothing during winter to keeps us warmer than wearing just one thick piece of clothing because because air gets trapped in between the two layers of blankets. This air prevents the flow of heat from our body to the cold surroundings as air is bad conductor of heat.<br><br><strong>6. Look at Fig. 4.13. Mark where the heat is being transferred by conduction, by convection and by radiation.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/02\/class-7-chapter4-science.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/02\/class-7-chapter4-sciekjjhnce.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<p>Conduction: From pan to water.<br>Convection: Heat within water.<br>Radiation: From burner to pan.<br><br><strong>7. In places of hot climate it is advised that the outer walls of houses be painted white. Explain.<br><\/strong><br><strong>Answer<\/strong><br><br>In places of hot climate it is advised that the outer walls of houses be painted white because white colour is absorb least heat. It reflects most of the heat and hence keeps the house cooler.<br><br><strong>8. One litre of water at 30\u00b0C is mixed with one litre of water at 50\u00b0C. The temperature of the mixture will be<br>(a) 80\u00b0C&nbsp;<br>(b) more than 50\u00b0C but less than 80\u00b0C<br>(c) 20\u00b0C<br>(d) between 30\u00b0C and 50\u00b0C<\/strong><br><br><strong>Answer<\/strong><br><br>\u25ba (d) between 30\u00b0C and 50\u00b0C<br>Heat gained by cold water will be equal to the lost by hot wate.<\/p>\n\n\n\n<p>Page No: 47<br><br><strong>9. An iron ball at 40\u00b0C is dropped in a mug containing water at 40\u00b0C. The heat will<br>(a) flow from iron ball to water.<br>(b) not flow from iron ball to water or from water to iron ball.<br>(c) flow from water to iron ball.<br>(d) increase the temperature of both.<\/strong><br><strong>Answer<\/strong><br><br>\u25ba (b) not flow from iron ball to water or from water to iron ball.<br>&nbsp;Both have the same temperature.<\/p>\n\n\n\n<p><strong>10. A wooden spoon is dipped in a cup of ice cream. Its other end<br>(a) becomes cold by the process of conduction.<br>(b) becomes cold by the process of convection.<br>(c) becomes cold by the process of radiation.<br>(d) does not become cold.<\/strong><\/p>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<p>&nbsp;\u25ba (d) does not become cold.<br>Wood is a bad conductor of heat.<\/p>\n\n\n\n<p><strong>11. Stainless steel pans are usually provided with copper bottoms. The reason for this could be that<br>(a) copper bottom makes the pan more durable.<br>(b) such pans appear colourful.<br>(c) copper is a better conductor of heat than the stainless steel.<br>(d) copper is easier to clean than the stainless steel.<\/strong><\/p>\n\n\n\n<p><strong>Answer<\/strong><\/p>\n\n\n\n<p>\u25ba (c) copper is a better conductor of heat than the stainless steel.<\/p>\n\n\n\n<p>NCERT 7th Science Chapter 4, class 7 Science Chapter 4 solutions<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ncert-solutions-for-7th-class-science-chapter-4-nbsp-download-pdf\">NCERT Solutions for 7th Class Science: Chapter 4:&nbsp;<strong>Download PDF<\/strong><\/h2>\n\n\n\n<p>NCERT Solutions for 7th Class Science: Chapter 4-Heat<\/p>\n\n\n\n<p><a href=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/09\/NCERT-Solutions-for-7th-Class-Science_-Chapter-4-Heat.pdf\"><strong>Download PDF<\/strong>: NCERT Solutions for 7th Class Science: Chapter 4-Heat PDF<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-chapter-wise-ncert-solutions-class-7-science\">Chapter-wise NCERT Solutions Class 7 Science<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-1-nutrition-in-plants\/\">Chapter 1 Nutrition in Plants<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-2-nutrition-in-animals\/\">Chapter 2 Nutrition in Animals<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-3-fibre-to-fabric\/\">Chapter 3 Fibre to Fabric<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/\">Chapter 4 Heat<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-5-acids-bases-and-salts\/\">Chapter 5 Acids, Bases and Salts<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-6-physical-and-chemical-changes\/\">Chapter 6 Physical and Chemical Changes<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-7-weather-climate-and-adaptations-of-animals-to-climate\/\">Chapter 7 Weather, Climate and Adaptations of Animals to Climate<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-8-winds-storms-and-cyclones\/\">Chapter 8 Winds, Storms and Cyclones<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-9-soil\/\">Chapter 9 Soil<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-10-respiration-in-organisms\/\">Chapter 10 Respiration in Organisms<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-11-transportation-in-animals-and-plants\/\">Chapter 11 Transportation in Animals and Plants<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-12-reproduction-in-plants\/\">Chapter 12 Reproduction in Plants<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-13-motion-and-time\/\">Chapter 13 Motion and Time<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-14-electric-current-and-its-effect\/\">Chapter 14 Electric Current and Its Effects<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/cert-solutions-for-7th-class-science-chapter-15-light\/\">Chapter 15 Light<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-16-water-a-precious-resource\/\">Chapter 16 Water: A Precious Resource<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-17-forests-our-lifeline\/\">Chapter 17 Forests: Our Lifeline<\/a><\/td><\/tr><tr><td><a href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-18-watsewater-story\/\">Chapter 18 Wastewater Story<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-about-ncert\"><strong><br><\/strong>About NCERT<\/h2>\n\n\n\n<p>The National Council of Educational Research and Training is an autonomous organization of the Government of India which was established in 1961 as a literary, scientific, and charitable Society under the Societies Registration Act. Its headquarters are located at Sri Aurbindo Marg in New Delhi. <a href=\"https:\/\/ncert.nic.in\/\" target=\"_blank\" rel=\"noreferrer noopener\">Visit the Official NCERT website<\/a> to learn more. <\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions\/\">NCERT Solutions<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-class-vii\/\">NCERT Solutions for Class 7<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-class-7-science\/\">NCERT Solutions for Class 7 Science<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Class 7: Science Chapter 4 solutions. Complete Class 7 Science Chapter 4 Notes. NCERT Solutions for 7th Class Science: Chapter 4-Heat NCERT 7th Science Chapter 4, class 7 Science Chapter 4 solutions Page No: 45 Exercises 1. State similarities and differences between the laboratory thermometer and the clinical thermometer. Answer Similarities:(i) both made up of [&hellip;]<\/p>\n","protected":false},"author":302,"featured_media":627338,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"newspack_featured_image_position":"","newspack_post_subtitle":"","newspack_article_summary_title":"Overview:","newspack_article_summary":"","newspack_hide_updated_date":false,"newspack_show_updated_date":false,"footnotes":""},"categories":[1411,907],"tags":[1542],"boards":[1180],"class_list":["post-128743","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-book-solutions","category-class-7","tag-ncert-science-class-7","boards-ncert","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.1.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Solutions Class 7, Science Chapter 4 - IndCareer Schools<\/title>\n<meta name=\"description\" content=\"NCERT Solutions for 7th Class Science: Chapter 4-Heat | Browse all Class 7 Science Solutions of NCERT books- IndCareer Schools\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NCERT Solutions for 7th Class Science: Chapter 4-Heat\" \/>\n<meta property=\"og:description\" content=\"Class 7: Science Chapter 4 solutions. 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NCERT Solutions for 7th Class Science: Chapter 4-Heat NCERT 7th Science\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/\" \/>\n<meta property=\"og:site_name\" content=\"IndCareer Schools\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/indcareer\" \/>\n<meta property=\"article:published_time\" content=\"2021-02-18T06:15:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-15T07:34:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/02\/NCERT-Solutions-85-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Pooja\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@indcareer\" \/>\n<meta name=\"twitter:site\" content=\"@indcareer\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Pooja\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/\"},\"author\":{\"name\":\"Pooja\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/#\/schema\/person\/d6945cf059726f162259ba738092301e\"},\"headline\":\"NCERT Solutions for 7th Class Science: Chapter 4-Heat\",\"datePublished\":\"2021-02-18T06:15:01+00:00\",\"dateModified\":\"2023-09-15T07:34:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/\"},\"wordCount\":1005,\"publisher\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.indcareer.com\/schools\/wp-content\/uploads\/2021\/02\/NCERT-Solutions-85-scaled.jpg\",\"keywords\":[\"NCERT Science (class 7)\"],\"articleSection\":[\"Book Solutions\",\"Class 7\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/\",\"url\":\"https:\/\/www.indcareer.com\/schools\/ncert-solutions-for-7th-class-science-chapter-4-heat\/\",\"name\":\"NCERT Solutions Class 7, Science Chapter 4 - 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