{"id":486,"date":"2023-09-26T12:51:41","date_gmt":"2023-09-26T12:51:41","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=486"},"modified":"2023-09-26T12:58:56","modified_gmt":"2023-09-26T12:58:56","slug":"week-3-jss-1-third-term-basic-science-technology-bst-lesson-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-3-jss-1-third-term-basic-science-technology-bst-lesson-notes\/","title":{"rendered":"Week 3 &#8211; Jss 1 Third Term Basic Science &#038; Technology (BST) Lesson Notes"},"content":{"rendered":"<p><strong>WEEK THREE<br \/>\n<\/strong><strong>FORCE<br \/>\n<\/strong><\/p>\n<ul>\n<li>\n<div><strong>Meaning<br \/>\n<\/strong><\/div>\n<\/li>\n<li>\n<div><strong>Types of Force<br \/>\n<\/strong><\/div>\n<\/li>\n<li>\n<div><strong>Contact and non-contact force<br \/>\n<\/strong><\/div>\n<\/li>\n<li>\n<div><strong>Magnetic and gravitational force<br \/>\n<\/strong><\/div>\n<\/li>\n<\/ul>\n<p>\u00a0<strong>Meaning<br \/>\n<\/strong>A force can be defined as any action that makes or tries to move, stop or alter the speed of a body in a given direction. Force can also be said to mean a push or a pull. The unit of force is Newton (N). Force is given by the formula:<br \/>\nForce (F) = Mass (m) x Acceleration (a)<br \/>\nF = ma<br \/>\n<strong>Types of Force<br \/>\n<\/strong>There are two types of force namely:<\/p>\n<ol>\n<li>\n<div>Contact force\n<\/div>\n<\/li>\n<li>\n<div>Non-contact\n<\/div>\n<\/li>\n<\/ol>\n<p><strong>Contact and non-contact force<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>CONTACT FORCES: These are forces which sources are in contact with the body to which they are applied. The contact forces could be direct or indirect. Examples of contact forces are: push, pull, tension, friction, upthrust<strong><br \/>\n\t\t\t\t\t<\/strong><\/div>\n<\/li>\n<li>\n<div>NON- CONTACT FORCES: These are forces which the sources do not require contact with the body they are applied. These forces act through a region in space called field. They are therefore also called <strong><em>force fields<\/em><\/strong>. Examples include magnetic force, gravitational force and electric force\n<\/div>\n<\/li>\n<\/ol>\n<p><strong>Magnetic and gravitational force<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>MAGNETIC FORCE: In a bar magnetic, there is North Pole end south pole end. <em>The like poles repel each other while unlike poles attract each other<\/em>.\n<\/div>\n<\/li>\n<\/ol>\n<p>Magnets can attract other magnets, iron fillings or any other metallic materials. This phenomenon show that a magnetic force acts over an area around the magnet. Thus a magnetic force is called a field force which acts over an area.<\/p>\n<ol>\n<li>\n<div>GRAVITATIONAL FORCE: The force which the earth attracts all objects to itself is called <em>the force of gravity or gravitational force<\/em>. This is the reason why objects above the earth fall down to the earth.\n<\/div>\n<\/li>\n<li>\n<div>ELECTRIC FORCE: Electric force field exists between two electric charges. <em>Unlike charges attract each other while like charges repel each other<\/em>.\n<\/div>\n<\/li>\n<\/ol>\n<p><strong>CLASSWORK 3<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>What is force? Give the SI unit\n<\/div>\n<\/li>\n<li>\n<div>State two contact force\n<\/div>\n<\/li>\n<\/ol>\n<p><strong>ASSIGNMENT 3<\/strong><br \/>\n\t\t<strong>SECTION A<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>The correct SI unit of force is (a) Joules (b) Watt (c) Newton (d) Metre<strong><br \/>\n\t\t\t\t\t<\/strong><\/div>\n<\/li>\n<li>\n<div>Which of the following statement is false<strong><br \/>\n\t\t\t\t\t<\/strong>(a) a force changes the shape of a body (b) forces may be balanced or unbalanced (c) a force cannot change the direction of a moving body   (d) a force changes the speed of object<strong><br \/>\n\t\t\t\t\t<\/strong><\/div>\n<\/li>\n<li>\n<div>The gravitational force can be found (a) on the earth (b) in the moon \u00a0\u00a0\u00a0\u00a0(c) around the planets (d) in the galaxy<strong><br \/>\n\t\t\t\t\t<\/strong><\/div>\n<\/li>\n<li>\n<div>The magnetic force is also known as _________(a) pulse ( b) electrical (c) field force (d) gravitational force <strong><br \/>\n\t\t\t\t\t<\/strong><\/div>\n<\/li>\n<li>\n<div>Which of the following is a type of force (a) electrical (b) heat (c) rotating (d) reversible<strong><br \/>\n\t\t\t\t\t<\/strong><\/div>\n<\/li>\n<\/ol>\n<p><strong>SECTION B<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>Mention three non-contact force that you know\n<\/div>\n<\/li>\n<li>\n<div>State two importance of force\n<\/div>\n<\/li>\n<li>\n<div>State the difference between contact and non-contact force<\/div>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>WEEK THREE FORCE Meaning Types of Force Contact and non-contact force Magnetic and gravitational force&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,83],"tags":[],"class_list":["post-486","post","type-post","status-publish","format-standard","hentry","category-posts","category-third-term-jss1-basic-science"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/comments?post=486"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/486\/revisions"}],"predecessor-version":[{"id":487,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/486\/revisions\/487"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}