e39465ad2f
new file: Files/flashplayer_32_sa.exe
new file: favicon.ico
new file: globe.gif
new file: imgs/download.png
new file: imgs/zuck.jpg
new file: index.html
new file: other.ico
new file: script.js
new file: site.webmanifest
new file: sitemap.html
new file: styles/backround.css
new file: styles/border.css
new file: styles/fonts/Titillium_Web/OFL.txt
new file: styles/fonts/Titillium_Web/TitilliumWeb-Black.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-Bold.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-BoldItalic.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-ExtraLight.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-ExtraLightItalic.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-Italic.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-Light.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-LightItalic.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-Regular.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-SemiBold.ttf
new file: styles/fonts/Titillium_Web/TitilliumWeb-SemiBoldItalic.ttf
new file: styles/fonts/webfontkit-20221027-163353/generator_config.txt
new file: styles/fonts/webfontkit-20221027-163353/specimen_files/grid_12-825-55-15.css
new file: styles/fonts/webfontkit-20221027-163353/specimen_files/specimen_stylesheet.css
new file: styles/fonts/webfontkit-20221027-163353/stylesheet.css
new file: styles/fonts/webfontkit-20221027-163353/titilliumweb-extralight-demo.html
new file: styles/fonts/webfontkit-20221027-163353/titilliumweb-extralight-webfont.woff
new file: styles/fonts/webfontkit-20221027-163353/titilliumweb-extralight-webfont.woff2
new file: styles/fonts/webfontkit-20221027-165950/generator_config.txt
new file: styles/fonts/webfontkit-20221027-165950/specimen_files/grid_12-825-55-15.css
new file: styles/fonts/webfontkit-20221027-165950/specimen_files/specimen_stylesheet.css
new file: styles/fonts/webfontkit-20221027-165950/stylesheet.css
new file: styles/fonts/webfontkit-20221027-165950/titilliumweb-bold-demo.html
new file: styles/fonts/webfontkit-20221027-165950/titilliumweb-bold-webfont.woff
new file: styles/fonts/webfontkit-20221027-165950/titilliumweb-bold-webfont.woff2
new file: styles/style.css
new file: tools/2048/.gitignore
new file: tools/2048/.jshintrc
new file: tools/2048/CONTRIBUTING.md
new file: tools/2048/LICENSE.txt
new file: tools/2048/README.md
new file: tools/2048/Rakefile
new file: tools/2048/favicon.ico
new file: tools/2048/index.html
new file: tools/2048/js/animframe_polyfill.js
new file: tools/2048/js/application.js
new file: tools/2048/js/bind_polyfill.js
new file: tools/2048/js/classlist_polyfill.js
new file: tools/2048/js/game_manager.js
new file: tools/2048/js/grid.js
new file: tools/2048/js/html_actuator.js
new file: tools/2048/js/keyboard_input_manager.js
new file: tools/2048/js/local_storage_manager.js
new file: tools/2048/js/tile.js
new file: tools/2048/meta/apple-touch-icon.png
new file: tools/webretro/cores/neocd_libretro.js
new file: tools/webretro/cores/neocd_libretro.wasm
new file: tools/webretro/cores/nestopia_libretro.js
new file: tools/webretro/cores/nestopia_libretro.wasm
new file: tools/webretro/cores/o2em_libretro.js
new file: tools/webretro/cores/o2em_libretro.wasm
new file: tools/webretro/cores/opera_libretro.js
new file: tools/webretro/cores/opera_libretro.wasm
182 lines
7.3 KiB
HTML
182 lines
7.3 KiB
HTML
<!DOCTYPE html>
|
||
<html lang="en"><!-- #BeginTemplate "/Templates/Main.dwt" --><!-- DW6 -->
|
||
|
||
<!-- Mirrored from www.mathsisfun.com/measure/unit.html by HTTrack Website Copier/3.x [XR&CO'2014], Sat, 29 Oct 2022 00:57:47 GMT -->
|
||
<head>
|
||
<meta http-equiv="content-type" content="text/html; charset=utf-8">
|
||
|
||
<!-- #BeginEditable "doctitle" -->
|
||
<title>Unit of Measurement</title>
|
||
|
||
<script>reSpell=[["liter","litre"],["liters","litres"],["meter","metre"],["centimeters","centimetres"],["kilometer","kilometre"],["kilometers","kilometres"],["standardized","standardised"]];</script>
|
||
|
||
<meta name="description" content="Learn what Unit means in measurement, with plenty of examples.">
|
||
|
||
<meta name="Keywords" content="math, maths, mathematics, grade, school, homework, games, puzzles, multiplication, long division, subtraction, addition, quiz, number, shape, statistics, algebra, education, percentage, area, ratio">
|
||
<!-- #EndEditable -->
|
||
<meta name="keywords" content="math, maths, mathematics, school, homework, education">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
|
||
<meta name="HandheldFriendly" content="true">
|
||
<meta name="referrer" content="always">
|
||
<link rel="stylesheet" type="text/css" href="../style3.css">
|
||
<script src="../main3.js"></script>
|
||
</head>
|
||
|
||
<body id="bodybg">
|
||
<div class="bg">
|
||
<div id="stt"></div>
|
||
<header>
|
||
<div id="hdr"></div>
|
||
<div id="logo"><a href="../index.html"><img src="../images/style/logo.svg" alt="Math is Fun"></a></div>
|
||
<div id="gtran">
|
||
<script>document.write(getTrans());</script>
|
||
</div>
|
||
<div id="adTopOuter" class="centerfull noprint">
|
||
<div id="adTop">
|
||
<script>document.write(getAdTop());</script>
|
||
</div>
|
||
</div>
|
||
<div id="adHide">
|
||
<div id="showAds1"><a href="javascript:showAds()">Show Ads</a></div>
|
||
<div id="hideAds1"><a href="javascript:hideAds()">Hide Ads</a><br>
|
||
<a href="../about-ads.html">About Ads</a></div>
|
||
</div>
|
||
</header>
|
||
<nav>
|
||
<div id="menuWide" class="menu">
|
||
<script>document.write(getMenu(0));</script>
|
||
</div>
|
||
<div id="linkto">
|
||
<div id="linktort">
|
||
<script>document.write(getLinks());</script>
|
||
</div>
|
||
</div>
|
||
<div id="search" role="search">
|
||
<script>document.write(getSearch());</script>
|
||
</div>
|
||
<div id="menuSlim" class="menu">
|
||
<script>document.write(getMenu(1));</script>
|
||
</div>
|
||
<div id="menuTiny" class="menu">
|
||
<script>document.write(getMenu(2));</script>
|
||
</div>
|
||
</nav>
|
||
<div id="extra"></div>
|
||
</div>
|
||
<article id="content" role="main">
|
||
<!-- #BeginEditable "Body" -->
|
||
|
||
<h1 class="center">"Unit" of Measurement</h1>
|
||
<p>In <a href="index.html">Measurement</a> we talk about "Units" ... what are they?</p>
|
||
<div class="def">
|
||
<p>A unit is any measurement that there is <span class="large">1</span> of.</p>
|
||
</div>
|
||
<div class="indent50px">
|
||
<p>So <b>1 meter</b> is a unit.</p>
|
||
<p>And <b>1 second</b> is also a unit</p>
|
||
<p>And <b>1 m/s</b> (one meter per second) is also a unit, because there is one of it.</p>
|
||
<p>And so on ...</p>
|
||
</div>
|
||
<h2>Without the "1"</h2>
|
||
<p>It is also common to drop the <b>"1"</b> in front and just talk about the type of measurement as a unit.</p>
|
||
<div class="example">
|
||
<p style="float:right; margin: 0 0 5px 10px;"><img src="images/stopwatch.jpg" alt="stopwatch" height="124" width="120"></p>
|
||
<p>Example: a commonly used unit of time is the <b>second</b></p>
|
||
<p>We don't say a stopwatch measures "1 seconds", we say it measures "seconds".</p>
|
||
<div style="clear:both"></div>
|
||
</div>
|
||
<p>So <i><b>"Unit"</b></i> is a general term that means <i><b>the type of measurement. </b></i>And people understand that we mean just "1" of it.</p>
|
||
<div class="words">
|
||
<p>So a conversation might go like this</p>
|
||
<div class="indent50px">
|
||
<p>Alex: "It measures 100"<br>
|
||
Sam: "In what Unit?"<br>
|
||
Alex: "Centimeters"</p>
|
||
</div>
|
||
</div>
|
||
<h2>Example: Speedometer</h2>
|
||
<div class="example">
|
||
<table style="border: 0; margin:auto;">
|
||
<tbody>
|
||
<tr>
|
||
<td><img src="images/speedometer.jpg" alt="Speedometer" height="182" width="214"></td>
|
||
<td>
|
||
<p>What <b>unit</b> does this Speedometer measure?</p>
|
||
<p>It measures <b>km/h</b> (kilometers per hour)</p>
|
||
<p>So "220" means 220 kilometers per hour.</p></td>
|
||
</tr>
|
||
</tbody></table>
|
||
</div>
|
||
<h2>Abbreviation</h2>
|
||
<p>We usually write units just using their abbrevations.</p>
|
||
<div class="example">
|
||
<h3>Example: km for kilometer</h3>
|
||
</div>
|
||
<div class="example">
|
||
<h3>Example: m/s (or m s<sup>-1</sup>) for meter per second</h3>
|
||
<p>m/s is a unit of <a href="metric-speed.html">speed</a></p>
|
||
</div>
|
||
<div class="example">
|
||
<h3>Example: kg/m<sup>3</sup> (or kg m<sup>-3</sup>) for kilogram per cubic meter</h3>
|
||
<p>kg/m<sup>3</sup> is a unit of density: how much mass per unit of volume.</p>
|
||
</div>
|
||
|
||
<h2>Standardized</h2>
|
||
<p>Units of Measurement are "standardized", meaning that there is a well-defined <b>standard</b> way to measure 1 of them.</p>
|
||
<div class="example">
|
||
<p style="float:right; margin: 0 0 5px 10px;"><img src="images/metre-international-prototype.jpg" alt="metre bar" height="100" width="156"></p>
|
||
<h3>Example: For many years (1889 to 1960) there was the <b><i>International Prototype Met</i><i>re</i></b> bar to show people exactly what 1 meter was.</h3>
|
||
<p>But that wasn't accurate enough!</p>
|
||
<p>Now "1 Meter" is defined as how far light travels in <span class="frac"><sup>1</sup>/<sub>299,792,458</sub></span> of a second.</p>
|
||
</div>
|
||
<h2>Different Systems of Measurement</h2>
|
||
<p>Units can be grouped together to make a "System".</p>
|
||
<div class="example">
|
||
<p>Example: the <b>meter</b>, <b>kilogram</b> and <b>second</b> (together with a few other units) together make up the <a href="metric-system-introduction.html">"SI" Metric System of Measurement</a>.</p>
|
||
</div>
|
||
|
||
<div class="example">
|
||
<p>Example: the <b>inch</b>, <b>foot, yard</b> and <b>mile</b> are the units of length in the <a href="us-standard-units-introduction.html">US Standard System of Measurement</a></p>
|
||
</div>
|
||
|
||
<h2>Unit Price</h2>
|
||
<p><a href="unit-price.html">Unit Price</a> tells us the cost per liter, per kilogram, per pound, etc, of what we want to buy.</p>
|
||
<p>It is a good way of comparing costs of what we buy.</p>
|
||
<div class="example">
|
||
<p>Example: What is best</p>
|
||
<ul>
|
||
<li>2 liters of Milk at $3.80, or</li>
|
||
<li>1.5 liters of Milk at $2.70 ?</li>
|
||
</ul>
|
||
<p>In this case the "Unit" is 1 liter, and the Unit Prices are:</p>
|
||
<ul>
|
||
<li>$3.80 / 2 liters = $1.90 per liter</li>
|
||
<li>$2.70 / 1.5 liters = $1.80 per liter</li>
|
||
</ul>
|
||
<p>So the lowest Unit Price (and the best bargain) is 1.5 liter at $2.70.</p>
|
||
</div>
|
||
<p> </p>
|
||
<div class="questions">
|
||
<script>getQ(1934, 1935, 1936, 3738, 3739, 3740, 3741, 3742, 3743, 3744);</script>
|
||
</div>
|
||
|
||
<div class="related">
|
||
<a href="metric-system-introduction.html">"SI" Metric System of Measurement</a>
|
||
<a href="index.html">Measurement Index</a>
|
||
</div>
|
||
<!-- #EndEditable -->
|
||
|
||
</article>
|
||
<div id="adend" class="centerfull noprint">
|
||
<script>document.write(getAdEnd());</script>
|
||
</div>
|
||
<footer id="footer" class="centerfull noprint">
|
||
<script>document.write(getFooter());</script>
|
||
</footer>
|
||
<div id="copyrt">
|
||
Copyright © 2020 MathsIsFun.com
|
||
</div>
|
||
<script>document.write(getBodyEnd());</script>
|
||
</body><!-- #EndTemplate -->
|
||
<!-- Mirrored from www.mathsisfun.com/measure/unit.html by HTTrack Website Copier/3.x [XR&CO'2014], Sat, 29 Oct 2022 00:57:47 GMT -->
|
||
</html> |