Day 1 Waves

Sound travels as a 

• Wave without a medium
• Series of compressions only
• Pattern of up and down vibrations
• Pattern of compressions and rarefactions

Sound is able to travel faster in solids than in air because the molecules in a solid are

• Closer together than air molecules
• more easily moved than air molecules
• Moving faster than air molecules
• Larger than air molecules

Sound will travel fastest through which substance?

• Air
• Iron
• Helium
• Water

Which best describes the relationship between the material and the speed of sound as shown in this chart?

• The denser the material, the faster the speed of sound
• The denser the material, the slower the speed of sound
• The more opaque the material, the slower the speed of sound
• The more transparent the material, the faster the speed of sound

When a guitar string is strummed, it produces sound by making

• heat
• electricity
• vibrations
• light

A teacher uses an instrument that records decibel levels.  What is the teacher measuring?

• noise level
• intensity of light
• relative humidity
• types of thermal energy

Martha studied different forms of energy.  Which two types of energy travel in waves?

• light and sound
• electricity and sound
• chemical and light
• chemical and electrical

The speed of sound is generally greatest in

• solids and lowest in liquids
• solids and lowest in gases
• gases and lowest in liquids
• gases and lowest in solids

What factor affects how fast a sound wave will move?

• The electrical charge of the sound waves
• the direction in which the sound waves travel
• the amount of energy released by each sound wave
• the type of material through which the sound travels

Sound waves travel the fastest through dense materials.  Through which of these would sound waves travel the SLOWEST?

• air
• glass
• metal
• water