Sound and Mechanical Energy

When you hear music, what is your ear actually detecting?

• notes from the speaker
• waves created by vibrations
• electrical currents traveling through the air
• sound atoms coming from the sound

Barbara went bike riding.  Her pedaling caused the bike to move.  Which form of energy allowed the bike to move?

• sound
• light
• thermal
• mechanical

The amount of kinetic energy an object has depends on its -

• mass and volume
• volume and friction
• mass and speed
• speed and density

What is potential energy?

• the energy an object has due to its position or condition
• the energy an object has due to its motions
• the energy an object has due to its chemical composition
• theh energy an object has due to its atomic structure

When does an object have no kinetic energy?

• when it is at rest
• when it is moving very slowly
• when the only force that is acting on it is gravity
• when it has no electrical charge

In which situation could sound not travel?

• through a plaster wall
• through the air
• through a vacuum in space
• through the water

A student launches a paper plane during a science investigation.  Which type of energy is observed as the paper plane flies?

• light
• thermal
• electrical
• mechanical

Which form of energy below is produced by hitting a drum?

• heat
• light
• sound
• solar

How does blowing through a pipe produce a sound?

• air is absorbed by the pipe
• the pipe speeds up the air
• air in the pipe vibrates
• the pipe cools the air