{"id":2315,"date":"2022-11-11T06:04:31","date_gmt":"2022-11-11T06:04:31","guid":{"rendered":"https:\/\/theexampillar.com\/ncert\/?p=2315"},"modified":"2022-11-29T06:40:56","modified_gmt":"2022-11-29T06:40:56","slug":"ncert-solutions-class-7-science-chapter-4-heat","status":"publish","type":"post","link":"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-science-chapter-4-heat\/","title":{"rendered":"NCERT Solutions Class 7 Science Chapter 4 Heat"},"content":{"rendered":"<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">NCERT Solutions Class 7 Science\u00a0<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">The NCERT Solutions in English Language for Class 7 Science <strong>Chapter &#8211; 4 (Heat) <\/strong>has been provided here to help the students in solving the questions from this exercise.<\/span><\/p>\n<h2 style=\"text-align: center;\"><span style=\"color: #000000; font-family: georgia, palatino, serif;\">Chapter &#8211; 4 (Heat)<\/span><\/h2>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>1. State similarities and differences between the laboratory thermometer and the clinical thermometer.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<br \/>\n<\/strong><strong>Similarities<\/strong><\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li><span style=\"color: #000000;\">Both are made of glass and consist of long narrow glass tube.<\/span><\/li>\n<li><span style=\"color: #000000;\">At one end both of them have a bulb.<\/span><\/li>\n<li><span style=\"color: #000000;\">Bulbs of both the thermometers consist of mercury<\/span><\/li>\n<li><span style=\"color: #000000;\">Celsius scale is present in both the thermometer<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Differences<\/strong><\/span><\/p>\n<div class=\"table-responsive\" style=\"text-align: justify;\">\n<table class=\"table table-bordered\">\n<tbody>\n<tr>\n<td><span style=\"color: #000000;\"><strong>Clinical Thermometer<\/strong><\/span><\/td>\n<td><span style=\"color: #000000;\"><strong>Laboratory thermometer<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Temperature range if 35 to 42\u00a0<sup>0<\/sup>\u00a0c<\/span><\/td>\n<td><span style=\"color: #000000;\">Temperature range is -10 to 110\u00a0<sup>0<\/sup>\u00a0c<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">Used to measure human body temperature<\/span><\/td>\n<td><span style=\"color: #000000;\">Used to measure temperature in the laboratory<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">It has kink which prevents immediate backflow of mercury<\/span><\/td>\n<td><span style=\"color: #000000;\">It does not have a kink<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>2. Give two examples each of conductors and insulators of heat.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<br \/>\n<\/strong><strong>Conductors &#8211;<\/strong> Iron and Copper<br \/>\n<strong>Insulators &#8211; <\/strong>Plastic and wood<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>3. Fill in the blanks :<br \/>\n<\/strong>(a) The hotness of an object is determined by its __________.<br \/>\n(b) Temperature of boiling water cannot be measured by a _____________ thermometer.<br \/>\n(c) Temperature is measured in degree ______________.<br \/>\n(d) No medium is required for transfer of heat by the process of __________.<br \/>\n(e) A cold steel spoon is dipped in a cup of hot milk. Heat is transferred to its other end by the process of ______________.<br \/>\n(f ) Clothes of ______________ colours absorb more heat better than clothes of light colours.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211; <\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\">(a) The hotness of an object is determined by its\u00a0<span style=\"text-decoration: underline;\"><strong>temperature<\/strong><\/span>.<br \/>\n(b) Temperature of boiling water cannot be measured by a\u00a0<span style=\"text-decoration: underline;\"><strong>clinical<\/strong><\/span>\u00a0thermometer.<br \/>\n(c) Temperature is measured in degree\u00a0<span style=\"text-decoration: underline;\"><strong>Celcius<\/strong><\/span>.<br \/>\n(d) No medium is required for transfer of heat by the process of\u00a0<span style=\"text-decoration: underline;\"><strong>radiation<\/strong><\/span>.<br \/>\n(e) A cold steel spoon is dipped in a cup of hot milk. Heat is transferred to its other end by the process of\u00a0<span style=\"text-decoration: underline;\"><strong>conduction<\/strong><\/span>.<br \/>\n(f) Clothes of <span style=\"text-decoration: underline;\"><strong>dark<\/strong><\/span>\u00a0colours absorb more heat better than clothes of light colours.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>4. Match the following :\u00a0<\/strong><\/span><\/p>\n<div class=\"table-responsive\" style=\"text-align: justify;\">\n<table class=\"table table-bordered\" style=\"width: 60%;\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\"><span style=\"color: #000000;\"><strong>Column-I<\/strong><\/span><\/td>\n<td style=\"text-align: center;\"><span style=\"color: #000000;\"><strong>Column-II<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(i) Land breeze blows during<\/span><\/td>\n<td><span style=\"color: #000000;\">(a) summer<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(ii) Sea breeze blows during<\/span><\/td>\n<td><span style=\"color: #000000;\">(b) winter<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(iii) Dark coloured clothes are preferred during<\/span><\/td>\n<td><span style=\"color: #000000;\">(c) day<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(iv) Light coloured clothes are preferred during<\/span><\/td>\n<td><span style=\"color: #000000;\">(d) night<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211; <\/strong><\/span><\/p>\n<div class=\"table-responsive\" style=\"text-align: justify;\">\n<table class=\"table table-bordered\" style=\"width: 60%;\">\n<tbody>\n<tr>\n<td><span style=\"color: #000000;\"><strong>Column-I<\/strong><\/span><\/td>\n<td><span style=\"color: #000000;\"><strong>Column-II<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(i) The land breeze blows during<\/span><\/td>\n<td><span style=\"color: #000000;\">(d) night<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(ii) The sea breeze blows during<\/span><\/td>\n<td><span style=\"color: #000000;\">(c) day<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(iii) Dark coloured clothes are preferred during<\/span><\/td>\n<td><span style=\"color: #000000;\">(b) winter<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"color: #000000;\">(iv) Light coloured clothes are preferred during<\/span><\/td>\n<td><span style=\"color: #000000;\">(a) summer<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>5. Discuss why wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>More layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing because air gets trapped in-between layer. As air is a bad conductor of heat it does not allow the escape of the heat from the body.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>6. Look at Fig. 4.13. Mark where the heat is being transferred by conduction, by convection and by radiation.<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2380\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-4-Q6.png\" alt=\"NCERT Class 7 Science Solution\" width=\"473\" height=\"424\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-4-Q6.png 473w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-4-Q6-300x269.png 300w\" sizes=\"auto, (max-width: 473px) 100vw, 473px\" \/><\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2381\" src=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-4-Ans-6.png\" alt=\"NCERT Class 7 Science Solution\" width=\"473\" height=\"424\" srcset=\"https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-4-Ans-6.png 473w, https:\/\/theexampillar.com\/ncert\/wp-content\/uploads\/2022\/11\/NCERT-Solutions-Class-7-Science-Chapter-4-Ans-6-300x269.png 300w\" sizes=\"auto, (max-width: 473px) 100vw, 473px\" \/><br \/>\n<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>7. In places of hot climate it is advised that the outer walls of houses be painted white. Explain.<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>In places of hot climate, it is advised to paint the outer walls of houses as white because a light colour such as white reflects back most of the heat that falls on it. Hence, a light colour tends to keep the house cool.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><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 \/>\n<\/strong>(a) 80\u00b0C<br \/>\n(b) more than 50\u00b0C but less than 80\u00b0C<br \/>\n(c) 20\u00b0C<br \/>\n(d) between 30\u00b0C and 50\u00b0C<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0\u00a0<\/strong>(d) The temperature of the mixture will be between\u00a030\u00b0C and 50\u00b0C because hot water loses the heat and simultaneously cold water gains heat <\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>9. An iron ball at 40\u00b0C is dropped in a mug containing water at 40\u00b0C. The heat will<br \/>\n<\/strong>(a) flow from iron ball to water.<br \/>\n(b) not flow from iron ball to water or from water to iron ball.<br \/>\n(c) flow from water to iron ball.<br \/>\n(d) increase the temperature of both.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>(b) The heat will not flow from iron ball to water or from water to iron ball as both the substances have<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>10. A wooden spoon is dipped in a cup of ice cream. Its other end<br \/>\n<\/strong>(a) becomes cold by the process of conduction.<br \/>\n(b) becomes cold by the process of convection.<br \/>\n(c) becomes cold by the process of radiation.<br \/>\n(d) does not become cold.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>(d) Its other end does not become cold as wood is a bad conductor of heat.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>11. Stainless steel pans are usually provided with copper bottoms. The reason for this could be that<br \/>\n<\/strong>(a) copper bottom makes the pan more durable.<br \/>\n(b) such pans appear colourful.<br \/>\n(c) copper is a better conductor of heat than stainless steel.<br \/>\n(d) copper is easier to clean than stainless steel.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><strong>Answer &#8211;\u00a0 <\/strong>(c) copper is a better conductor of heat than the stainless steel.<\/span><\/p>\n<table style=\"width: 100%; border-collapse: collapse;\" border=\"1\">\n<tbody>\n<tr>\n<td style=\"width: 100%; background-color: #f2e079; text-align: center;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong>NCERT Class 7<sup>th\u00a0<\/sup>Solution\u00a0<\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-english\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 English\u201d (Edit)\">NCERT Solutions Class 7 English<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-hindi\/\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 7 Hindi<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-maths\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Maths\u201d (Edit)\">NCERT Solutions Class 7 Mathematics<\/a>\u00a0<\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><a href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-sanskrit-ruchira\/\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\">NCERT Solutions Class 7 Sanskrit<\/span><\/strong><\/span><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 7 Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<tr>\n<td style=\"width: 100%; text-align: left;\"><span style=\"color: #ff0000; font-size: 14pt;\"><strong><span style=\"color: #0000ff; font-family: georgia, palatino, serif; font-size: 12pt;\"><a class=\"row-title\" style=\"color: #0000ff;\" href=\"https:\/\/theexampillar.com\/ncert\/ncert-solutions-class-7-social-science\/\" target=\"_blank\" rel=\"noopener\" aria-label=\"\u201cNCERT Solutions Class 6 Social Science\u201d (Edit)\">NCERT Solutions Class 7 Social Science<\/a><\/span><\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>NCERT Solutions Class 7 Science\u00a0 The NCERT Solutions in English Language for Class 7 Science Chapter &#8211; 4 (Heat) has been provided here to help the students in solving the questions from this exercise. Chapter &#8211; 4 (Heat) 1. State similarities and differences between the laboratory thermometer and the clinical thermometer. Answer &#8211; Similarities Both [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[292],"tags":[306,307,295,5],"class_list":["post-2315","post","type-post","status-publish","format-standard","hentry","category-class-7-science","tag-ncert-class-7-science-chapter-4-heat-in-english","tag-ncert-solutions-class-7-science-chapter-4-in-english","tag-ncert-solutions-class-7-science-in-english","tag-ncert-solutions-in-english"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.9 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>NCERT Solutions Class 7 Science Chapter 4 Heat | TheExamPillar NCERT<\/title>\n<meta name=\"description\" content=\"NCERT Solutions Class 7 Science\u00a0The NCERT Solutions in English Language for Class 7 Science Chapter - 4 (Heat) has been provided here to help the students in solving the questions from this exercise.Chapter - 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