2. Core Physics – Energy L/O :- To understand redshift and Cosmic microwave background radiation “In the beginning” Exam Date -

3. Quick Quiz - What do you remember from last lesson? Write out the electromagnetic spectrum from longest to shortest Which are the most dangerous EM waves? What can they cause? What is the equation for working out the speed of a wave? What happens to a light ray when it travels from air through glass? Why does this happen? What is diffraction? What are the 2 different types of wave? Give an example How do you work out the pay-back time for insulation? What are the pros and cons of wind energy? How does increasing the volume of a sound affect the wave?

5. TASK You are going to be split into groups of 3 and then given a different article each to read about a)The big bang b)The steady state theory c)The big crunch Vs the big expansion You will have 10 mins to read the article and you will then have 2 mins to feed back to your group You will not be able to take the information with you so make sure you make enough notes

6. www.A6training.co.uk 10 Minute Timer End

7. www.A6training.co.uk 2 Minute Timer 2:001:591:581:571:561:551:541:531:521:511:501:491:481:471:461:451:441:431:421:411:401:391:381:371:361:351:341:331:321:311:301:291:281:271:261:251:241:231:221:211:201:191:181:171:161:151:141:131:121:111:101:091:081:071:061:051:041:031:021:011:000:590:580:570:560:550:540:530:520:510:500:490:480:470:460:450:440:430:420:410:400:390:380:370:360:350:340:330:320:310:300:290:280:270:260:250:240:230:220:210:200:190:180:170:160:150:140:130:120:110:100:090:080:070:060:050:040:030:020:01End

8. 28/02/2016 The formation of the universe The “Steady State” theory This theory states that the universe has always existed as it does now and hasn’t changed. The trouble is that the night sky would be completely lit up because of the billions of stars, but it’s not, so… The “Big Bang” theory This theory states that the universe started off with an explosion and everything has been moving away ever since. There are two main pieces of evidence for this: background microwave radiation and red shift. There are two main theories about how the universe started:

9. 28/02/2016 The end of the Universe There are some theories about how the universe will end: “The big crunch” – if there is too much mass (i.e. too much matter) the universe will collapse under its own gravity. It may then do another “big bang” – this is the “oscillating universe” theory. “Expanding Universe” – if there isn’t enough mass in the universe then it will just keep on expending forever. If there is just the right mass in the universe then it will reach a fixed size.

10. What do you think is most likely to be true, the big bang or the steady state? What do you think will happen in the end? The big crunch or the big expansion?

11. What have you learnt? Do you know the 2 theories to explain the beginnings of the universe Do you know what the evidence is for the big bang? Can you explain the two ways in which the universe may end?