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Questions in science

[Sagot para sa’yo] 1. Which of the following factors does the speed of sound depend? A. density B. elasticity C. temperature C. refracted 2. An echo occurs when a sound wave is A. absorbed B. reflected 3. What happens to the speed of sound as the temperature increases? A. constant B. decreases B. reflection C. increases D. all of the above D. transmitted D. cannot be determined D. reverberation D. 345 m/s 4. Which phenomenon explains why sound is heard at longer distances at night than in day? A. echolocation C. refraction 5. How fast does sound travel if the air temperature is 20°C? A. 334 m/s B. 340 m/s C. 343 m/s 6. Which of the following is true about the effect of air temperature on the speed of sound? A. The lower the temperature the faster the speed. B. The higher the temperature the faster the speed. C. The higher the temperature the slower the speed. D. The temperature does not affect the speed of sound. 7. What is the relationship of temperature to the speed of sound? A. equal C. directly proportional B. no relationship D. inversely proportional 8 A. warm particles move slowly . Sound travels faster through warm materials than cold materials because B. gas particles are packed tightly C. warm particles are moving quickly D. sound does not travel faster through a warm substance 9. Ships use echolocation to measure the A. size of fish B. area of ocean C. depth of water D. density of water

[Sagot para sa’yo] ano Ang natutunan mo sa pollution​

[Sagot para sa’yo] how definite shape and volume​

[Sagot para sa’yo] 6. How many reversalsoccurred 83million yearsago?​

[Sagot para sa’yo] what is the prepare a table showing the similarities and differences between the water cycle and this illustration​

[Sagot para sa’yo] what is the kinetic energy of a 1000kg object that is moving with a velocity of 10m/s​

[Sagot para sa’yo] 20ml cold water 5 g sugar 20 times stirring 20 ml cold water 5 g sugar 10 times stirring which is the independent variable a the amount of water bamount of sugar c the times of stirring d the temperature of water​

[Sagot para sa’yo] 5. Your circle must not have intersected precisely at one point. Other than the error in your measurement, what are thepossible reasons for this? (Be specific.)​

[Sagot para sa’yo] organism that exist in the past but in now extint​

[Sagot para sa’yo] why it is important minimize this harmful effect​