Question

Directions: Write the letter of the correct answer on the space provided before each number.
_A___1. If an automobile travels 50 miles in two hours its speed is
25 miles per hour          c.   75 miles per hour    
50 miles per hour          d.   100 miles per hour
__D___2. Which of the following is not an example of vector quantity?
50 Newtons, upward              c.   50 kg.
25 m/sec.², increasing           d.   10 m, North
__A___3. The straight line distance between the starting and end points.
distance             c.   time
speed                d.   displacement
__A__4. Which of the following equations is correct in describing the relationship between velocity v, distance d, time t?
a. v = d/t          b.   v = dxt          c.   v = d+t          d.   v = d-t
_____5. When is an object considered to be in motion?
When its position changes with respect to a point of reference.
When its distance changes with respect to a point of reference.
When its direction changes with respect to a point of reference.
I and II only          b.   I and III only          c.   II and III only          d.   I, II and III only
_____6. It is the highest part of the wave.
amplitude b. crest c. trough d. wavelength
______7. It is the lowest part of the wave.
amplitude b. crest c. trough d. wavelength
______8. It is the height of the wave.
amplitude b. crest c. trough d. wavelength
______9. It is the spatial period, or space, of the wave the distance over which the wave’s shape repeats like crest to crest.
amplitude b. crest c. trough d. wavelength
______10 Which of the following is the correct statement for surface wave?
Waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of propagation of the wave.
A moving wave whose oscillations are perpendicular to the direction of the wave or path of propagation.
A seismic wave that is trapped near the surface of the earth.
______11 It is a required medium to travel.
Transverse wave c. Longitudinal wave
Mechanical wave d. Electromagnetic wave
______12. It is the waves that are created as a result of vibrations between an electric field and a magnetic field.
Transverse wave c. Longitudinal wave
Mechanical wave d. Electromagnetic wave
______13. Which of the following units is used in frequency of a wave?
hertz b. decibel c. Newton d. hour
______14. Which of the following is an example of Mechanical wave?
light wave b. sound wave c. heat wave d. microwave
______15. Which of the following is an example of electromagnetic wave?
sound wave b. water wave c. seismic wave d. heat wave
______16. Which of the following would best transmit sound?
steel in cabinet c. air in your classroom
water in the ocean d. water in a swimming pool
______17. Which of the following cannot be considered a high pitch sound?
nagging woman c. chirping bird
shouting man d. growling tiger
______18. . What happens if the volume of the speaker is being increased to make the sound louder?
amplitude decreases c. amplitude is constant
amplitude will not change d. amplitude increases
______19. A sound wave is a _______.
shock wave c. standing wave
transverse wave d. longitudinal wave
______20. . The speed of sound depends on _______.
pitch c. temperature
loudness d. intensity

II. True or False
Directions: Write TRUE if the statement is correct and FALSE if it is not.
______1. Heat is a form of energy.
______2. Sunlight is an example of radiation.
______3. Heat can only transfer in direct contact.
______4. A decrease in temperature means that an object is getting hotter.
______5. Heat always transfers from a hot object to a cold object.
______6. Warm molecules always rises.
______7. Plastic is a good conductor of heat.
______8. Gases and liquids are known as fluids.
______9. Convection can only take place on solid objects.
______10. No heat transfer occurs between two objects which are at the same temperature.
______11. Metal is a good conductor of heat.
______12. Absorption is not a method of heat transfer.
______13. Conduction is the transfer of energy by direct contact.
______14. Radiation can travel even without a medium.
______15. Glass is a good insulator of heat.
______16. Convection happens when there is a direct contact between two objects.
______17. Heat does not travel in solids, liquids and gases.
______18. Warm molecules sink while cold molecules rise.
______19. Convection is the transfer of heat by currents.
______20. Radiation is the transfer of heat through space.​

Answer 1

Answer:

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