Method and Materials

 Background Information

 Lab Report

Index

 Hypothesis

 Results

 Analytic Essay

 Photos

 Diagram

 Animations

 Bibiliography

Enhancement

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Materials:
- sponge (large, cut down to size)
- 6 small sponges
- scissors
- masking tape
- "glad-ware" box
- 2 Ziploc freezer bags
- rocks
- silicone
- cd containing
high frequency and low frequency sounds
- -cd player
- 50 feet of string (labeled as needed)
- 2 4lb. Weight belts
- speaker
- computer
- Pasco sound sensor equipment
- Water bottle
- Water proofed sharpie
- 25 feet of extra wire
- soldering gun
- shrinking tube
- electircians tape

Method:
1. Hook up sound sensor and speaker to computer (the computer will be taking the data)
2. Put "depth string" in the water.
3. Plug speakers into CD player (CD player does not go underwater, only the waterproofed speakers).
4. Hold sensor 4 feet away from the speakers on ground level (for the control part of our experiment).
5. Play first track on CD, the high frequency sound.
6. Play second track on CD, the low frequency sound.
7. Repeat steps 5 and 6 with sensor 10 feet away from speakers.
8. Repeat steps 5 and 6 with the sensor 20 feet away from the speakers.
9. Both people go 5 feet underwater, with one person holding the sensor and the other person holding the speaker.
10. Hold sensor 4 feet away from speakers.
11. Send water bottle to surface to tell person assisting you to play first track on the CD, the high frequency sound then pull bottle down.
12. Send water bottle to surface to tell person assisting you to play second track on the CD, the low frequency sound then pull bottle down.
13. Repeat steps 11 and 12 with the sensor 10 feet away from the speakers.
14. Repeat steps 11 and 12 with the sensor 20 feet away from the speakers.

Method for Waterproofing Sound Sensor:
1. Get a container and lid of "glad-ware"
2. Place rocks at the bottom of the box.
3. Place large sponge on top of the rocks.
4. Place small (cut down to size) sponges at the edges of the box.
5. Cut a hole large enough so that the cord of the sensor can fit through.
6. Place cord through hole and position sensor at opposite end of box.
7. Use masking tape to secure sensor.
8. Put small sponge on top of the sensor and use scrap pieces of sponge to fill in the uncovered areas.
9. Put lid on container.
10. Place a scrap piece (with a slit) over the hole containing the cord.
11. Then, seal the covering with silicone.
12. Coat silicone all around space between lid and container.
13. Let this sit and dry for an hour.
14. Then, re-coat silicone over all areas where it was previously.
15. Attach three more wires to the sensor in order for it to stretch ten feet total.

Method of waterproofing speakers:
1. Place speakers inside a freezer bag.
2. Put three sponges on top of the speakers.
3. Put the bag with the speakers in another freezer bag.
4. Seal the zipper of the bag with silicone.
5. Let it sit and dry for an hour.
6. Coat again with silicone.

Method of splicing speaker wire:

1. Get speakers and 25 feet of extra wire.
2. Cut speaker wire into two pieces (one attached to speakers, one attached to plug)
3. take both ends of extra wire and take plastic cover off of first 2 inches of both ends.
4. connect A1 to A3, A2 to A4, B1 to B3 and B2 to B4 (see
 Diagram)
5. solder each connection.
6. Repeat steps 4 and 5 with second speaker.
7. cover end closest to speaker with shrinking tube by exposing it to fire.
8. cover end closest to plug with tape to secure connection.

Method of making "depth string":
1. Get string, tape measure, and water proof sharpie.
2. Mark string at 2 feet, five feet from two-foot mark, and two feet from five-foot mark.
3. Tie a weight belt to both ends of string.

Method of making "distance string":
1. Get string, tape measure, and water proof sharpie.
2. Mark string at 2 feet (start), four feet from two-foot mark, six feet from four-foot mark (ten feet total), ten feet from ten-foot mark (twenty feet total, and two feet from twenty-foot mark (end).
3. Tie start to sensor box and end to speaker bag.

Method of making water bottle:
1. Get an empty water bottle.
2. Tie string (long enough to go down far enough) around neck of bottle and your wrist.
3. Fill one fourth of bottle with water so it doesn't resist pulling but still wants to float.

 Background Information

 Lab Report

Index

 Hypothesis

 Results

 Analytic Essay

 Photos

 Diagram

 Animations

 Bibiliography

Enhancement

 DEEP Homepage