Tuning Fork

21/03/2011

7A

Eliza

Viktor

Sound Waves Lab

Guiding Question:How does density of various solids affect the way the wound waves travel from the tuning fork?

Hypothesis: I think that the more smaller tune fork the louder the sound will be and the pitch will be higher.

Materials:

• tuning fork
• white board
• wood desk
• locker

Procedure:

Data:

	Description of the loudness of the sound	Description of how long  the sound lasts
Locker	The sound is high because the Layer of the locker is a thin layer.	the sound travels 6 second until it ends.
Wood Desk	The sound is very low because the desk is very hard	the sound travels 3 second until it ends.
White Board	The sound is very high because there is more surface area.	the sound travels 7 second until it ends.

III.  Exploration (PLAN & DO A TEST):
       Using the tune fork you are going to hit a table or something that is solid when you hit the table and place the tuning fork on the white board and see how the tune fork behaves.

IV.  RECORD & ANALYZE)

       

         C.  Analysis of Data: As i hit the thing on the desk there is a lot of vibration is small and as i place the tune fork i place on the board the vibration is bigger and bigger.


IV.(CONCLUSION): In conclusion this lab hes learned me a lot more about i wanted to learn i made me understand sound differently and how it behaves. I think that this is fun do do because you don’t have to researcher a lot you just have to do with the tune fork


V. (FURTHER INQUIRY): I would like to have done more of this and researched more because i enjoyed doing this a recommend to everybody to try and do this.

Chapter 2 Section 1

- Sound waves carry energy through a medium without the partials of the median traveling along.


- Sound is a dustrbance that travel through a medium as a longitudinal wave.

Safety procedures for earthquakes

Stay as safe as possible during an earthquake. Be aware that some earthquakes are actually foreshocks and a larger earthquake might occur. Minimize your movements to a few steps to a nearby safe place and if you are indoors, stay there until the shaking has stopped and you are sure exiting is safe.

• DROP to the ground; take COVER by getting under a sturdy table or other piece of furniture; and hold on until the shaking stops. If there isn’t a table or desk near you, cover your face and head with your arms and crouch in an inside corner of the building.
• Stay away from glass, windows, outside doors and walls, and ianything that could fall, such as lighting fixtures or furniture.
• Stay in bed if you are there when the earthquake strikes. Hold on and protect your head with a pillow, unless you are under a heavy light fixture that could fall. In that case, move to the nearest safe place.
• Use a doorway for shelter only if it is in close proximity to you and if you know it is a strongly supported, loadbearing doorway
• • Stay inside until the shaking stops and it is safe to go outside. Research has shown that most injuries occur when people inside buildings attempt to move to a different location inside the building or try to leave.
• Be aware that the electricity may go out or the sprinkler systems or fire alarms may turn on

If a earthquake occurred now i would probably start to panic and jump around, but i would thing through it and meby take shelter and try to protect my body body  then when the earthquake finishes i would see if every body is okay and help to clean the room house or school room.