B. TRUE OR FALSE. Direction: Write true if the statement is true, if it is not, write false. 1. All sounds are produced through vibrations. 2. Sound waves cannot travel without a medium. 3. Sound waves could be classified as a transverse wave. 4. Light waves could be classified as a transverse wave. 5. 10 000 Hz is still audible for humans. 6. Larynx is also called the voice box. 7. Frequencies higher than 20000 decibels are called intrasounds. 8. The eardrum is a part of the middle ear. 9. Ultrasounds involves the use of high frequency waves to create a 2d, 3d or 4d 1 image of the baby. 10. The smallest bone inn our body can be in our ear. 11. Sound waves have longer wavelengths than light waves. 12. Frequency of sound waves are directly proportional to wavelengths. 13. The human voice is regarded as one of the wonderful musical instruments. 14. Noise pollution is now a form of public concern. 15. Problems related to noise may include stress and high blood pressure
