St. Peter’s College 8. What is the highest point on a transverse wave?

Sabayle St., Iligan City a. amplitude c. trough

Telephone No. (063) 222-2660 local 113 b. crest d. wavelength
Email Address: spcbed18@gmail.com science 7
A.Y: 2022 – 2023 3rd Periodical Exam
March 16-17, 2023 9. What is transferred from place to place by a wave?
BASIC EDUCATION DEPARTMENT a. energy c. sound
b. light d. wave particles
Name: _________________________________ Score: _____/
Grade & section: ________________________ 10. What type of waves are sound waves?
a. sonar c. transverse
Test I: Multiple Choice. Read and analyze each statement. Encircle the letter of the b. radio d. compressional
correct answer.
11. In which of the following do sound waves cannot travel?
1. The weakest fundamental force.
a. weak force c. gravitational force a. gases c. liquids
b. strong force d. electromagnetic force b. solids d. vacuum

2. What does a speedometer of the car measure? 12. What is the human perception of sound intensity?
a. frequency c. acoustics
a. acceleration c. instantaneous velocity
b. average speed d. instantaneous speed b. pitch d. loudness

3. What is the value of this displacement in this situation: a dog walks 1 meter south 13. What is the echoing effect produced by many reflections of sound?
and 2 meters north? a. rarefaction c. intensity
a. 3 meters north c. 1 meter south b. reverberation d. resonance
b. 3 meters south d. 1 meter south
14. What is the lowest point on a transverse wave?
4. What does 5 m/s represent? a. amplitude c. trough
a. distance c. velocity b. crest d. wavelength
b. speed d. acceleration
15. What is the change in pitch due to a moving wave source?
a. Doppler effect c. compressional effect
5. what is speed?
a. the ratio of distance divided by time b. resonance d. rarefaction
b. the sum of distance and time
c. the product of distance and time 16. In which of the following mediums will sound travel fastest?
d. the same as velocity a. water c. air
b. oil d. brick
6. 15 m/s to the north represents _____.
a. acceleration c. speed 17. How do sound waves travel through the air?
c. displacement d. velocity a. by magnetic force
b. by the force of gravity pulling them to the earth
7. Which of the following has a unit of m/s2? c. by vibrating or moving the particles of matter in the air
d. all of the above
a. weight c. acceleration
b. inertia d. velocity
18. What sound wave is unpleasant to the ear? Test III. Problem Solving: Read the given word problems below and calculate on
a. melody c. music what is being asked. Show your solutions neatly and write the given, and
b. noise d. rhythm what is being asked in the problem. (5 pts each item)

19. What is the repeating disturbance that transfers energy through matter or
open space?
1.) Elma Muros, the fastest female sprinter in Southeast Asia, can run a 200-m
a. conductor c. frequency
distance course in 24.42 seconds. What is Elma’s speed?
b. medium d. wave

20. what is the distance between crests, troughs, rarefactions, or compressions?

a. amplitude c. trough 2.) Leighmar drove to the city to pick up a friend. She went 3000 km east in about
b. crest d. wavelength 10 hours. Calculate her velocity.

Test II. Identification: Identify what is being asked in the following sentences and se 3.) The lowest pitch that can be detected by the human ear is 20 hertz and the
the words in the box. highest is 20 kilohertz. Find the wavelength of each frequency in air.

Longitudinal Electromagnetic
amplitude reflection Infrasonic
wave wave
Mechanical
slit frequency medium hertz
wave

____________1. Sound is a form of _____ that forms when there is vibration.

____________2. These are sound waves that cannot be heard by the human ear.

____________3. It is the maximum distance of a point of a wave from its equilibrium

position.

____________4. The number of cycles per seconds in waves.

____________5. What is the unit for frequency?

____________6. The obstacle in diffraction is called _____.

____________7. A material that is instrumental for the disturbance to move.

____________8. A type of wave where direction of the vibration is parallel to the

direction of the wave.

____________9. A type of wave that does not need a medium to transfer its energy.

____________10. It is the bouncing of the waves when it hits a boundary.