This is the BBC . This podcast is supported by advertising outside the . This is a download from BBC Learning English to find out more , visit our website . Six minutes recovered from BBC Learning English . Hello and welcome to Six Minute Vocabulary . I'm Catherine . And I'm . , look at this photo . Do you like it ? I took it this morning . Wow , that's not bad . Okay , I didn't know you were into photography . Well , I . I love taking photographs . Really ? Well , funnily enough , the words photography and photograph are good examples of today's topic , which is stress we're going to look at , the way word stress can change and words that come from the same root word . We'll show you how to work out the stress of these words . There'll be a quiz and we'll leave you with a top tip for learning vocabulary . But first , let's listen to John . He's a photographer , which is a person who takes photographs as a job . He's talking about his latest project . Here's a question to think about while you listen to what John's project . The book is a collection of photographs of my father . He studied geography as a young man and went all over the world during his career . He visited some very interesting geographic locations , the Andes , the Sahara , beautiful places , the books like a photographic record of his life , a kind of biography and pictures . And so that's John . We asked you what was his project ? And the answer is a biography . Now , a biography is the story of someone's life , usually a book . But a photographer , so he told the story of his father's life and photographs . Let's hear a clip . He studied geography as a young man . John's dad was interested in geography . The study of the physical features of the earth and geography is a key word in today's show because of its stress . Yes . Now geography has four syllables g all fee and the stress falls on the third syllable from the end . Geography , not geography , geography or geography , it's geography , words that end in the letters p h y pronounced usually have this stress pattern like by geography and photography . Do you like photography , Katherine ? To be honest , not really . Not really . No . Sorry to hear that . No , nevermind . Anyway , these words like geography , biography and photography are all nouns . We can change them to adjectives by changing the Y at the end to pronounced . And when we do this , the word stress moves to a different place in the word . Here's John again . He studied geography as a young man . He visited some very interesting geographic locations . Did you hear the difference ? When we say adjectives that end with , the stress falls on the penultimate syllable . That's the syllable just before the last one . So it's geography , but geographic , geography , geographic . And we have photography . Photographic , yes , and there's other words like dramatic to do with theater and drama , alphabetic to do with the alphabet and artistic to describe things to do with art , are you artistic ? Well , I like to think of myself as quite artistic . Yes . And . Yes . What's the most interesting geographic location you've been to ? It's a lovely place in Turkey called is listening to BBC , learning English , and we're talking about word stress . We've looked at the stress patterns of words that end in P.H. like photography and words ending with like photographic . And now it's time for a quiz choose the correct pronunciation for the words in these sentences . Katherine will tell you the answers . Ready ? Number one , I like reading books about famous people . I love a good A biography , B biography or C biography . And it's B biography . Well done . If you got that right . Number two , the police arrested him when they found a photographic evidence , B , photographic evidence or C , photographic evidence . And the answer is C , photographic evidence . And that's the end of the quiz . And that almost brings us to the end of the program . But before we go , here's today's top tip for learning vocabulary . If you use an online dictionary , you can usually hear an audio recording of a word's pronunciation . Listen carefully to the word stress and try to copy it to . Thank you . There's more about this ABC Learning English dot com . Join us again for more six minute vocabulary by .