Answer: False, True, True, True, True
Explanation:
Sound can travel through a vacuum.
False. Sound requires a medium (solid, liquid, or gas) to travel through. It cannot travel through a vacuum because there are no particles in a vacuum to transmit the sound waves.
Sound travels in longitudinal waves.
True. Sound waves are indeed longitudinal waves, which means the particles in the medium vibrate parallel to the direction of the wave.
Sound is caused by vibration.
True. Sound is produced by the vibration of particles in a medium, which creates compressions and rarefactions that propagate as sound waves.
Sound travels most slowly through a gas.
True. Sound generally travels more slowly through gases compared to liquids and solids because the particles in gases are more spread out, leading to a lower transmission speed.
Sound speeds up when the temperature is increased.
True. In general, the speed of sound increases with an increase in temperature. This is because an increase in temperature typically leads to an increase in the speed of the particles in the medium, allowing sound waves to propagate more quickly.
So, the correct statements are 2, 3, 4, and 5.