5th Sound

Sound is caused by....

• molecules

• vibrations

• waves

• echoes

__________ means to move back and forth quickly.

• Pitch

• Amplitude

• Vibration

• Echo

Sound waves travel the FASTEST through _____________.

• gases

• liquids

• solids

Sound waves travel the SLOWEST through _____________.

• gases

• solids

• liquids

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.

• Sound does not travel faster through a solid than a gas.

• Solid molecules are packed tightly.

• Gas molecules move slowly.

Why can't we hear sound in space?

• can't take our helmet off to hear

• there are no molecules so a vibration doesn't cause sound

• it's too cold

• sounds are actually louder in space.

Soft surfaces _______ sound waves. 

• Reflect
• Absorb

Tags

CCSS.RI.7.7

CCSS.RL.7.7

CCSS.RI.8.7

CCSS.RI.6.7

CCSS.RL.6.7

When sound hits a hard surface and reflects back, this is

• An accident

• An echo

How LOUD or quiet a sound is...

• Pitch

• Frequency

• Loudness

• Echo

Amplitude is the distance a vibrating particle moves. A sound wave with a HIGH amplitude makes a

• loud sound

• soft sound

• high sound

• low sound