1. Which of the following statements about mechanical waves is true?
Mechanical waves require a medium to travel through.
Mechanical waves do not have amplitude and wavelength.**
Mechanical waves do not have frequency.
Mechanical waves can travel through blank space.
Help me I’m failing science
Mechanical waves require a medium to travel through.
To find the correct statement about mechanical waves, let's analyze each option:
1. "Mechanical waves require a medium to travel through." - This statement is true. Mechanical waves, such as sound waves and water waves, require a medium (solid, liquid, or gas) to propagate. The vibration of particles in the medium transfers energy and allows the wave to propagate.
2. "Mechanical waves do not have amplitude and wavelength." - This statement is incorrect. Mechanical waves do have amplitude, which measures the maximum displacement of particles from their equilibrium position, and they also have wavelength, which is the distance between two consecutive points in the wave that are in phase.
3. "Mechanical waves do not have frequency." - This statement is incorrect. Mechanical waves do have frequency, which is the number of complete cycles or oscillations of the wave that occur in one second. Frequency is typically measured in hertz (Hz).
4. "Mechanical waves can travel through blank space." - This statement is incorrect. Mechanical waves require a medium to travel through and cannot propagate through empty space, such as a vacuum.
Therefore, the correct statement about mechanical waves is "Mechanical waves require a medium to travel through."