Fechar
How are sounds made?
Can air travel through a vacuum (empty space- it doesn't even have air)?
True or False:
Loud sounds have less energy than softer ones.
Define 'pitch'
True or False:
If an object vibrates faster, they make higher pitched sounds
Fill in the gaps:
the _______ the frequency, the higher the ______
What is wavelength?
Which colour wave has the highest/lowest frequency?
-*Bonus: Which wave is the highest amplitude (loudest)?
Fill in the gaps:
The closer the ________, the ______ the frequency.
What is amplitude?
Label a) and b)
Name whether the sound is quiet; loud; high; low:
Which medium does sound travel the fastest in?
Which medium does sound travel the slowest in?
What is density?
Why do we see a lightning strike before a thunder clap?
Why is an echo caused?
How do you calculate the speed of sound?
Speed of sound in air = 330m/s
How far does sound travel in
a. 2 seconds?
b. 15 seconds?
Define:
1. compression
2. rarefaction
What is a longitudinal wave?
Fill in the gaps:
A _____ ______ passes through the air because the moving _______ bump into their neighbours. When they collide the particles pass the ________ energy and the sound wave ______ through the air.
WORDS: sound wave; particles; vibration; moves
How many sections is the ear divided into?
Name the-
-light green
-dark green
-blue
-purple
-yellow lines
-parts.
Which range of sounds are humans adapted to hear?
Name the 8 steps in how a sound reaches the brain.
