Question 1 Multiple Choice
What must happen for a sound to be produced?
AAn object must be heated
BAn object must vibrate
CAn object must be visible
DAn object must be falling
Every sound starts with a vibration. The vibrating object pushes on the surrounding air (or other material), creating sound waves.
Question 2 True / False
Sound can travel through outer space.
Answer: False
Sound needs a medium like air, water, or solid material to travel through. Space is a vacuum with no material, so sound cannot travel there.
Question 3 Short Answer
How does sound get from a ringing bell to your ear?
Think about your answer, then reveal below.
Model answer: The bell vibrates and pushes on the air, creating sound waves that travel through the air to your ear.
The vibrating bell creates waves of compressed and expanded air. These waves travel outward until they reach your ear, where they are heard as sound.