{"id":337,"date":"2014-11-10T09:43:53","date_gmt":"2014-11-10T09:43:53","guid":{"rendered":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/?page_id=337"},"modified":"2019-12-02T13:36:56","modified_gmt":"2019-12-02T13:36:56","slug":"heat-wk-1","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/heat-wk-1\/","title":{"rendered":"Heat Homework Week 1"},"content":{"rendered":"

 <\/p>\n\n\n\n\n
\"Homework<\/a>This Homework requires GRAPH PAPER!<\/strong><\/td>\n\"pdficon\"<\/td>\n\"\"<\/a><\/td>\n<\/tr>\n
In your jotter write the DATE in the margin.
\nNow add a TITLE for your homework.
\nYour title should be the name of the Homework: Heat\u00a0Homework Wk 1<\/td>\n		<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/td>\n\u00a0Question 1<\/strong><\/td>\n<\/tr>\n
<\/td>\n\u00a0A scientist is testing an electric kettle to see how fast heat escapes in a room at 19C. He places a thermometer down the spout and boils the water. He switches off, and starts his clock at the same time. He records the temperature of the water every 10 minutes. Here are his results on a graph.<\/td>\n<\/tr>\n
<\/td>\n\u00a0\"\"<\/td>\n<\/tr>\n
\u00a0a)<\/td>\n\u00a0Which of the ranges of times shows the\u00a0biggest drop in temperature?<\/td>\n<\/tr>\n
\u00a0A<\/td>\n\u00a00 and 10 minutes<\/strong><\/td>\n<\/tr>\n
\u00a0B<\/td>\n\u00a010 and 20 minutes<\/strong><\/td>\n<\/tr>\n
\u00a0C<\/td>\n\u00a020 and 30 minutes<\/strong><\/td>\n<\/tr>\n
\u00a0D<\/td>\n\u00a030 and 40 minutes<\/strong><\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/tr>\n
\u00a0b)<\/td>\n\u00a0By what time\u00a0had the temperature of the water dropped by 50%?<\/td>\n<\/tr>\n
\u00a0c)<\/td>\n\u00a0What was the drop in temperature in the first\u00a050 minutes?<\/td>\n<\/tr>\n
\u00a0d)<\/td>\n\u00a0Express the drop in temperature after 30 minutes\u00a0as a percentage fall.<\/td>\n<\/tr>\n
<\/td>\n\u00a0Question 2.<\/strong><\/td>\n<\/tr>\n
<\/td>\n\u00a0A bar of chocolate contains 540 kilojoules of energy. There are 9 squares in the bar.\u00a0\"\"<\/td>\n<\/tr>\n
\u00a0a)<\/td>\n\u00a0How many kilojoules of energy are in one square of chocolate?<\/td>\n<\/tr>\n
\u00a0b)<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n\u00a0Mina’s daily energy requirements are estimated at 8,400kJ.\u00a0 How many chocolate bars would Mina need to eat to provide all of her energy needs?<\/td>\n<\/tr>\n
\u00a0c)<\/td>\n<\/td>\n<\/tr>\n
<\/td>\n\u00a0A rival chocolate company wanted to produce a low energy chocolate to appeal to dieting choco-holics. They wanted to produce a bar with only 70% the energy of he original bar. How much energy (in kJ) would that bar contain?<\/td>\n<\/tr>\n
<\/td>\n\u00a0\u00a0Question 3.<\/strong><\/td>\n<\/tr>\n
<\/td>\n\u00a0The table shows the energy used to heat a building during the months July to November. It also shows the average outdoor temperature during these months.<\/td>\n<\/tr>\n
<\/td>\n\u00a0\"\"<\/td>\n<\/tr>\n
\u00a0a)<\/td>\n\u00a0Use the information in the table to produce a\u00a0bar chart<\/strong>\u00a0of energy use over the five months shown.<\/td>\n<\/tr>\n
\u00a0b)<\/td>\n\u00a0What was the total energy used in the months when the average outdoor temperature was less than 15 \u00baC?<\/td>\n<\/tr>\n
\u00a0c)<\/td>\n\u00a0From the data it can be concluded that…<\/td>\n<\/tr>\n
\u00a0A<\/td>\n\u00a0As the average outdoor temperature falls, the energy used stays the same<\/td>\n<\/tr>\n
\u00a0B<\/td>\n\u00a0As the average outdoor temperature falls, the energy used increases<\/td>\n<\/tr>\n
\u00a0C<\/td>\n\u00a0As the average outdoor temperature falls, the energy used decreases<\/td>\n<\/tr>\n
\u00a0D<\/td>\n\u00a0The data does not\u00a0allow a conclusion to be reached<\/td>\n<\/tr>\n
<\/td>\n\u00a0Question 4.<\/strong><\/td>\n<\/tr>\n
<\/td>\nHeat energy is lost from five parts of a house as shown in the diagram below.<\/td>\n<\/tr>\n
<\/td>\n\u00a0\"\"<\/td>\n<\/tr>\n
\u00a0a)<\/td>\n\u00a0What percentage of energy is lost through the walls?<\/td>\n<\/tr>\n
\u00a0b)<\/td>\n\u00a0Present the information from the diagram in a table with suitable headings. Your table should include the value you calculated for the percentage heat loss through the walls. (answer to question a)<\/td>\n<\/tr>\n
<\/td>\n\u00a0\u00a0Question 5.<\/strong><\/td>\n<\/tr>\n
<\/td>\nCraig investigated how quickly water could be boiled using liquid fuels.<\/td>\n<\/tr>\n
<\/td>\n\u00a0\"\"<\/td>\n<\/tr>\n
<\/td>\n\u00a0Which two boxes should he choose for a fair test?<\/td>\n<\/tr>\n
\u00a0A<\/td>\n\u00a01 and 2<\/td>\n<\/tr>\n
\u00a0B<\/td>\n\u00a02 and 3<\/td>\n<\/tr>\n
\u00a0C<\/td>\n\u00a01 and 3<\/td>\n<\/tr>\n
\u00a0D<\/td>\n\u00a02 and 4<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

  This Homework requires GRAPH PAPER! In your jotter write the DATE in the margin. Now add a TITLE for your homework. Your title should be the name of the Homework: Heat\u00a0Homework Wk 1   \u00a0Question 1 \u00a0A scientist is testing an electric kettle to see how fast heat escapes in a room at 19C. … Continue reading “Heat Homework Week 1”<\/span><\/a><\/p>\n","protected":false},"author":2454,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-337","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/pages\/337","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/users\/2454"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/comments?post=337"}],"version-history":[{"count":78,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/pages\/337\/revisions"}],"predecessor-version":[{"id":1515,"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/pages\/337\/revisions\/1515"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/gc\/hyndsecscis1hwrk\/wp-json\/wp\/v2\/media?parent=337"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}