The frequency of a sound is the number of complete waves that pass a point in a second. Complete the sentences by circling the correct word in the brackets. A higher frequency means (more fewer ) vibrations per second. Sound a) b) Frequency is a measure of (pitch (hertz C) A (high/ low) frequency means a high-pitched sound. d) Frequency is measured in ( pitch hertz which is the number of vibrations per second. When RussellL was standing on a cliff, he saw some dynamite being set off in the quarry below. A few seconds later, he heard a huge explosion. Russell South side North side KABLOOEY a) Why did Russell see the dynamite explode before he heard it? This because. loght travels faster is than. Sound. b) Just before he heard the explosion, he felt a faint vibration in the ground. Explain why he felt vibrations in the ground before he heard the explosion. Use the words dense, medium, faster, particles, solid and gas in your answer. c) Shortly after he heard the explosion, he heard an echo. Use what you know about the properties of sound and the diagram to explain why.

Name:\iana Zomorai 1. The illustration below shows a series of transverse waves. Label each part in the space provided. a. b. a. e. g.1 of Fill in the blanks: from one place to another. trough 2. Waves carry while the lowest part is the 3. The highest point on a transverse wave is the 4. The Crest is the height of the wave. 5. The distance from one crest to the next is the Wevelegth 6. Below are a number of series of waves. Underneath each diagram write the numbers of waves in the series. D. A. В. M.. a. Which of the above has the biggest amplitude? b. Which of the above has the shortest wavelength? c. Which of the above has the longest wavelength? 7. Express in words and mathematically the relationship between period and frequency: a. beoa b. wavelength and frequency: bealupan od o boheq bna abon soul d c. wavelength and period: pe abe 8. Consider a wave generator that produces 10 pulses per second. The speed of the waves is 300 cm/s: a. What is the wavelength of the waves? 300/10 =…

For the following statements, identify which are True and which are False. If False, please explaina) There are to types of mechanical waves: Transverse and Longitudinalb) Transverse Waves are defined by the motion of the medium moving in the same direction as the wave is traveling.c) Longitudinal Waves are defined by the motion of the medium moving in the same direction as the wave istraveling.d) Pulses are waves! (Mathematically at least.)

velocity of sound in The a certain medium is 1000 m/s.  If sound wave has a frequency of 500 hz, the wavelength would be _____________.        A)  200 m        B) 500 m        C) 2 m        D) 500,000 m