ÿþ<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>PhysicsLessons.com - Thermal Energy Quiz</title> <script src="shared.js" type="text/javascript" ></script> <script type="text/javascript"> <!-- /* Some font settings can be changed on the pop-up results page. Edit these here: */ Font("Times New Roman"); FontSize("12"); BackgroundColor("white"); /* BELOW IS WHERE YOU MODIFY THE QUESTIONS AND ANSWERS. Do not use double-quotes (") in the questions and answers, since that's what the program uses to tell when your text begins and ends. Single-quotes are okay. */ // convert twixt temperature scales Question("Jane's cookbook calls for 375&deg; Fahrenheit but her oven uses Celsius. What temperature should be set her oven to?"); CorrectChoice("191&deg;C"); WrongChoice("240&deg;C"); WrongChoice("375&deg;C"); WrongChoice("707&deg;C"); //+273 Question("The room temperature of the laboratory was recorded to be 35&deg;C. What temperature is this in Kelvins?"); WrongChoice("-2.4&times;10<sup>2</sup> K"); WrongChoice("95 K"); WrongChoice("2.5&times;10<sup>2</sup> K"); CorrectChoice("3.1&times;10<sup>2</sup> K"); Question("How much heat energy is required to warm 3.5 kg of water from 16&deg;C to 96&deg;C?"); WrongChoice("940 J"); WrongChoice("1,530 J"); WrongChoice("5,300 J"); CorrectChoice("1,000,000+ J"); Question("How much heat energy is released when 0.039 kg of ethanol is frozen? The heat of fusion for methanol is 1.09 &times; 10<sup>5</sup> J/kg"); WrongChoice("3.6 kJ"); CorrectChoice("4.3 kJ"); WrongChoice("5.0 kJ"); WrongChoice("2.8&times;10<sup>6</sup> kJ"); Question("What is the final temperature of 0.63 kg of water that releases 2290 Joules of thermal energy? The water has an initial temperature of 48.2&deg;C.The specific heat capacity of water is 4180 J/kg &deg;C"); WrongChoice("23.1&deg;C"); WrongChoice("41.6&deg;C"); WrongChoice("68.3&deg;C"); CorrectChoice(noneOfAbove); /* noneOfAbove is defined in shared.js */ /* rejected :-/ ;-) Question("How does the temperature of steam compare to the temperature of boiling water?"); WrongChoice("lesser or equal"); WrongChoice("equal"); CorrectChoice("greater or equal"); WrongChoice("greater"); Explanation("The boiling water and steam are both at 100&deg;C when states are changing (this makes them equal). However, steam may be of a greater temperature than water."); */ Question("In a pot of boiling water, the temperatures of the liquid water and steam are"); CorrectChoice("both the same."); WrongChoice("different. The steam is hotter than the liquid water."); WrongChoice("different. The liquid water is hotter than the steam."); WrongChoice(noneOfAbove); Explanation("When a mass of matter changes state, the whole mass generally has the same temperature until the entire mass has changed state."); Question("As a copper pipe is heated, it"); WrongChoice("shrinks."); CorrectChoice("gets longer and wider."); WrongChoice("only gets longer."); WrongChoice("only gets wider."); /* not so good Question("Suppose there is a metal A with a higher heat capacity than metal B. Both have a temperature of 20&deg;C. When heated to 30&deg;C, metal A will"); CorrectChoice("take longer to heat than metal B."); WrongChoice("take just as long to heat as metal B."); WrongChoice("take less time to heat up than metal B."); WrongChoice("not explode while metal B will because metal B will exceed its heat capacity."); */ Question("Sam preheated her oven to 180&deg;C and then inserted the left-over chicken casserole. She then boiled water cook peas (at about 90&deg;C) on her stove. Why can she extend her arms into the oven while she needs a spoon to manipulate the peas in the water?"); WrongChoice("The boiling water is hotter."); WrongChoice("Air has a higher heat capacity than water."); CorrectChoice("Water has a greater heat capacity than air."); WrongChoice("Air is more conductive than water"); /* the inverse is true...or converse... all of these ``logical'' terms confuse me :-/? */ Explanation("Water has both higher heat capacity and conductivity than air. This is why water is used in cooling systems."); /* conduction */ Question("Microwave heats food through which method of thermal energy transfer?"); WrongChoice("convection"); WrongChoice("conduction"); CorrectChoice("radiation"); WrongChoice("diffraction"); /* */ Question("A frying pan heats eggs through the process of"); WrongChoice("convection."); CorrectChoice("conduction."); WrongChoice("radiation."); WrongChoice("diffraction."); // --> </script> </head> <body> <font face="tahoma, verdana, arial, times" size="2"> <a href="../"><img title="PhysicsLessons.com - Physics for a NEW Generation" src="/smalllogo2.gif" width="314" height="80" alt="" border="0" ></a><br> <a href="/quizzone.htm"><img border="0" src="/quizzonelogo.gif"></a></font> <h1>Quiz 10. Thermal Energy</h1> <!-- The following line goes where you want the quiz to be inserted --> <script src="output.js" type="text/javascript" ></script> <font face="verdana" size="1"> <p align="center">Copyright ©2003, PhysicsLessons.com</p> </font> </body> </html>