Center #1 Pipe Chimes Date. Experiment with the pipes. Hang them by the string and hit them with your pencil.

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1 Center #1 Pipe Chimes Date Experiment with the pipes. Hang them by the string and hit them with your pencil. 1. How does the sound change with different lengths of pipe? 2. How can you change the sound the pipes make? 3. Do different kinds of pipes make different sounds? 4. What else did you notice? What questions do you have? Draw a diagram to help explain what you learned today. Label the parts.

2 Center # 2 Aluminum Soup Can Phone Date Can you figure out how to talk to each other without everyone else hearing? Tips: #1. Does the string have to be tight? #2. Should you touch the string? #3. Does it help to plug your other ear? #4. Which part of the can should you hold to make it work the best? 1. What did you discover? 2. How do you think the sound travels from one can to the other? 3. What questions do you have? Draw a diagram to help explain what you learned today. Label the parts.

3 Center # 3 Water Jars Date Carefully put different amounts of water in each jar. Tap each jar with a pencil. 1. What do you notice? 2. Which jar made the highest pitch? 3. Which one made the lowest pitch? 4. Why do you think this is true? Draw a diagram to help explain what you learned today. Label the parts. Note: please empty the jars into the sink and dry off any water spills. Thanks! Center #4 Dancing

4 Salt Date Sprinkle a few grains of salt on top of the drum. (The container with the balloon stretched across the top.) Put the large coffee can close to the drum but not touching it. Hit the coffee can sharply with a spoon and watch the salt on the drum. 0. What does the salt do when you hit the coffee can with the spoon? 1. What makes the salt move? 4. What questions do you have? Draw a diagram to help explain what you learned today. Label the parts. Center #5 Computer Program Wave Window Date

5 Start the Wave Window program on the computer. Experiment by making different sounds. Click the Pause button to freeze the picture so you can look at the sound wave carefully. 1. How can you make sound waves that are tall? 2. How can you make waves that are short? 3. How can you make waves that are wide? 4. How can you make waves that are narrow? 5. How can you make smooth waves? 6. How can you make jagged waves? Draw the shape of the wave beside each answer.

6 Center #6 Water Waves Date Tuning fork QuickTime and a TIFF (Uncompressed) decompressor are needed to see this picture. handle tines Fill the dish half full of water. Wait for the water to become very still. 1. Hold the tuning fork by the handle and tap one of the tines on the table. 2. Carefully touch the water with the tines. Look at the water between the tines. What do you see? What do you hear? What do you think is happening? Draw a diagram to help explain what you learned today. Label the parts.

7 Center #7 Squeaky Straws Date Take a straw and flatten one end. Cut that end to make a pointed V shape. Put the pointed end into your mouth. Pinch the straw flat with your lips or your teeth and blow hard. Listen to the sound. 1. How is the sound made? Cut a second straw to a shorter length and make a V end again. 2. What do you notice about the sound now? 3. Why do you think the sounds are different in some ways and similar in another way? Note: You may keep the two straws you used to make sounds. Please put all the cut pieces in the garbage.

8 Center #8 Good Vibrations Date Put a paint stir stick on your desk so half is sticking out over the edge. Use one hand to hold one end firmly on the desk. Use the other hand to gently flick the free end. Listen to the sound. 1. What happens? What do you hear? 1. Do it again, but this time with more on the desk and less sticking over the edge. How does the sound change? 2. Do it again, but this time with less on the desk and more sticking over the edge. How does the sound change this time? 4. Why do you think the sound changes?

9 Center #9 Music Pitch Date Put a few different sizes of elastics around the container so they stretch over the open side. 1. Predict which elastic will have the highest pitch and which will have the lowest pitch. 2. Gently pluck each elastic and listen carefully. What do you hear? Pluck one elastic again. Stop the sound. 3. What do you think would happen to the pitch if you shorten the length of the elastic? Pinch the elastic in the middle and pluck one half of it again. 4. What happened to the pitch? Draw a picture that shows your experiment. Label the parts.

10 Center #10 Amplifying and Muting Sounds Date Use the materials at this centre to discover two things: how to make sounds easier to hear (amplify the sounds) how to make sounds harder to hear (mute the sounds) Tips: people often use layers of soft materials and containers to mute sounds people sometimes cup their hands around their ears to collect sound waves so they can hear better Draw a picture that shows what you discovered. Label the parts.

11 Centre # 11 Tuning Forks Date QuickTime and a TIFF (Uncompressed) decompressor are needed to see this picture. handle tines Hold a tuning fork by the handle and tap one of the tines on the table. Carefully bring the tuning fork close to one ear. Do the same thing again and bring it close to your other ear. What do you hear? What do you think is happening? Tap a tuning fork on the table, then touch the handle to a table or desk. What do you hear? What do you think is happening? Try tapping the tuning fork and touching the handle to your skull. What happens? Draw a diagram to help explain what you learned today. Label the parts.

12 Centre # 12 Sending Sound Through Solids Date Each person gets a coat hanger with a string tied to each corner. Wrap the loose end of each string around your pointer fingers so the coat hanger hangs upside down in front of you. Stick your fingers in your ears (not the strings, just the ends of your pointer fingers.) Bend forward and bump the coat hanger into a table or chair. 1. What do you hear? 2. How is the sound getting into your ears? 3. Does sound travel better through air or through solid objects? Put the coat hangers away. Have one partner put their ear on one end of a table while another partner taps a pencil on the other end of the table. 4. What did you discover? Draw an illustration of what happened. Label the parts.