{"id":22830,"date":"2024-04-15T06:25:38","date_gmt":"2024-04-15T06:25:38","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=22830"},"modified":"2024-04-15T06:25:38","modified_gmt":"2024-04-15T06:25:38","slug":"which-layer-of-the-earths-atmosphere-reflect-back-the-radio-waves-to-the-earths-surface-a-ionosphere-b-stratosphere-c-mesosphere-d-exosphere","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-layer-of-the-earths-atmosphere-reflect-back-the-radio-waves-to-the-earths-surface-a-ionosphere-b-stratosphere-c-mesosphere-d-exosphere\/","title":{"rendered":"Which layer of the earth&#8217;s atmosphere reflect back the radio waves to the earth&#8217;s surface ? A. Ionosphere B. Stratosphere C. Mesosphere D. Exosphere"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a9be65ed6937\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    Ionosphere                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Stratosphere                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Mesosphere                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Exosphere                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is A. Ionosphere.<\/p>\n<p>The ionosphere is a region of Earth&#8217;s upper atmosphere that contains high concentrations of ions and free electrons. It is located above the stratosphere and below the thermosphere. The ionosphere is important because it reflects radio waves back to Earth&#8217;s surface, allowing long-distance radio communication.<\/p>\n<p>The stratosphere is the second layer of Earth&#8217;s atmosphere, above the troposphere and below the mesosphere. <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> It is located from approximately 10 to 50 kilometers (6 to 31 miles) above Earth&#8217;s surface. The stratosphere is characterized by <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> an increase in temperature with altitude, due to the absorption of ultraviolet radiation by ozone.<\/p>\n<p>The mesosphere is the third layer of Earth&#8217;s atmosphere, above the stratosphere and below the thermosphere. It is located from approximately 50 to 80 kilometers (31 to 50 miles) above Earth&#8217;s surface. The mesosphere is characterized by a decrease in temperature with altitude, due to the lack of ozone and the presence of other gases that absorb infrared radiation.<\/p>\n<p>The exosphere is the outermost layer of Earth&#8217;s atmosphere, extending from the top of the thermosphere to the beginning of interplanetary space. It is characterized by a very low density of gas molecules, which are constantly escaping into space.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Which layer of the earth&#039;s atmosphere reflect back the radio waves to the earth&#039;s surface ? A. Ionosphere B. Stratosphere C. Mesosphere D. 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