Question

sound waves are an example of what type of wave?
mechanical
electromagnetic
microwaves
gamma rays
question 11 (1 point)
all waves need a medium to travel through.
true
false

Explanation:

• First question: Sound waves are mechanical waves. Mechanical waves require a medium (like air, water, or solids) to travel. Electromagnetic waves (like light) don't need a medium. Microwaves and gamma - rays are types of electromagnetic waves.
• Second question: Not all waves need a medium. Electromagnetic waves (e.g., light, radio waves) can travel through a vacuum (space with no matter). So the statement “All waves need a medium to travel through” is false.

Answer:

• First question: Mechanical
• Second question: False