Labels:book | bulletin board | dialog box | monitor | web site | window OCR: HELP Make simple tcephone This activity shows you how to build simple telephone You will need two yoghur pots some thin string and two matchst ticks 1 Make hole in the bottom each yoghurt pot and put the string through it Secure the string ur place with matchstick. 2 Aska friend to help you pull the string tight and to holc one yoghurt pot to his her ear When you speak into your yoghurt pot can your friend hear you? The sounds have travelled along the string What is the longest telephone you can make? 3) Repeat the experiment using sounds different pitch and valume using variety of instruments and other sound sources What is the connection between sound pitch and distance travelled? What is the connection between sound volume and distance travelled? voghurt matchsticks hold alono instr Jme ...
