Year 7's have recently spent two sessions designing a series of questions that will form their investigation around SOUND. Students worked in groups of 2-3 and looked at developing WHO, WHEN,
WHERE, WHY, WHAT, & HOW questions about sound. They had to listen to each others questions and try to 'make the questions better'.
Students will get 3 chances to improve their questions.
Have look at the questions and see if you can make any questions 'better' by adding a comment. Any websites or on-line resources anyone finds can be added to this blog for students to use. The questions were:
7A
ASH, EVEE & JAZZ
Who discovered sound?
How does sound get made?
When did sound get discovered?
Where does sound end?
Why is there sound?
What is sound?
CHRIS & STEVEN
How do bats and dolphins use echolocation?
Who invented SONAR?
Why do some animals use echolocation to find their food?
Where was the first place SONAR was used?
When was echolocation discovered?
What does SONAR stand for?
NATALIE, LOUISA, EMILY
How do ears work?
Why does helium, when inhaled, change the tone of your voice?
Who invented the vibrating voice machine?
Where does thunder come from and why is it so loud?
When do unborn babies develop sound?
What happens when you break the sound barrier?
DECLAN, OSCAR, JORDAN
How do we pick up more than one sound frequency at a time?
Who discovered sound waves?
Why is the speed of light faster than the speed of sound?
Where is the loudest place on earth?
When was the first music invented?
What are the different types of sound frequencies
JAIME & LOUISE
How come dogs can hear better than humans?
Who proved dogs can hear sounds that we cant?
Why do dogs need good hearing?
Where is the dogs hearing sense?
When dogs bark is the sound like talking is to humans?
What dogs hear the best?
GEORGIA & CHAISE
How does sound echo in tunnels and empty rooms?
Who decided to call sound sound?
Why do people from different countries have different accents?
Where do thunder and lightning start?
What makes the sound when you blow over a bottle
When does a storm start?
NICK, JAMES & DOUGLAS
How can sound travel through a non-continuous object?
Who was the first person to discover ecolocation?
Why do we hear sound?
Where was sound first used as a weapon?
When was the first time a man-made object went into supersonic speed?
What part of an amplifying object transmits sound?
GEORGIA & PHEOBE
How was sound invented and why?
Who invented talking?
Why does sound echo in a large area?
Where was sound invented?
When was sound invented?
What does sound sound like?
EMILY,& SHANAE
How is sound made?
Who invented sound?
Why does peoples voice sound different to others?
Where does sound go after it has been heard?
When was sound and radar discovered?
What is sound?
JOSH, JACK, MICHEAL......
7B
Najib & Zander
How is sound generated?
Who made up the word sound?
Why is sound sent out in vibrations?
Where is the noisiest place in the world?
When does sound go to high pitch for us to hear
Gemma & Erin
How fast does sound travel?
Who found out that sound is made by vibrartions?
Why is sound so compatible with air?
Where does sound echo the most?
When was sound fist discovered, and a theory developed?
What makes your ear emit sound as well as absorb it?
Nathan & Kurt
How is sound made?
What is it?
When was it found?
Why does it exist?
Where does it come from?
Andrew & Joe
How is sound generated?
Who made up the word sound?
Where is the noisiest place in the world?
When does sound become to a high pitch to hear?
What is the speed of sound?
Lauren, Lisa, Cathy
How fast can sound travel?
Who gave sound the name sound?
Why do our ears only hear to a certain extent?
Where does sound end after travelling a certain distance?
When was sound found?
Sarah & Ash
How do we hear sound?
Who made up the word sound?
Why does sound travel?
Where can't you hear sound?
When was sound first heard?
What does 'sound' sound like?
Rose, Laura & Demi
How do dolphins make sound?
Who is the leader of the dolphins?
Why do dolphins make sound?
Where does the sound come from on a dolphin?
When did someone find out the dolphins make sounds?
What can dolphins hear?
Remedy and Tayla
How do you make sound?
Who discovered sound?
Why does sound come through our ears?
Where does sound come from?
When was sound discovered?
What does sound mean?
Dylan & Jackson
How is sound 'loud'
Who uses sound?
Why does sound travel through air?
Where does sound come from?
When does sound become so high that we cant hear it?
What makes sound?
Connor and Tyson
How does sound travel?
Who found out that sounds make tiny vibrations?
Why do you hear sound?
Where was sound found?
When was sound found?
What are sound waves?
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1 comment:
WHAT DOES SOUND SOUND LIKE????
Sound is the transfer of energy in the form of waves. The waves travel by bumping air molecules together. The air molecules move back and forth, but the wave of energy moves outwards. The speed with which the waves travel through air depend solely on temperature. Waves will travel faster in warmer air. In general, at 68 F (20 C) sound travels at 1130 ft/sec (344.4 m/sec.) Sound travels slower in gases than in liquids and more slowly in liquids than solids.
All sound waves have a specific amplitude and frequency. Amplitude is the height of a wave. Frequency is the number of waves that pass a point in a second. This is affected by how quickly the wave source is vibrating, which determines how close the waves are together. For sound, the higher the frequency, the higher the pitch of the sound. The lower the frequency, the lower the pitch of the sound.
What we hear depends on the properties of the sound wave that enters our ears. A loud sound represents a high amplitude sound wave, one with lots of energy. Musicians use a letter code to describe the pitch of a musical sound. The musical scale begins with an interval called an octave. This is the interval between middle C and high C, for example. An increase in pitch of one octave represents a doubling of the frequency of the wave.
When we speak, our words have a particular wave shape. Computers can imitate sounds, including human speech, by recreating the wave shape. For example, by reversing the wave shape, the sound is also reversed. A person can be made to speak backwards by simply reversing the sound waves. An echo is a sound we hear after it is reflected, meaning bounced back from an object.
If you happen to be standing by a highway and a car going by blows its horn, you have no doubt noticed how the horn sounds suddenly lower just as the car passes you. This effect is called the Doppler effect. As the sound is moving toward you it is compressed, or pushed together. This makes you hear a higher frequency than the horn is actually producing. As the car passes you and the sound source begins to move away from you, the sound waves begin to spread out. This makes you hear a lower frequency than normal which the ear hears as a lower tone.
Things can, of course, travel faster than sound. Some jets and the space shuttle do and they produce something called a sonic boom. What happens is that because they are traveling faster than sound, all those sound waves get compressed into one big compression wave. This wave intersects the ground at some distance behind the plane and when it touches the ground, we hear the sonic boom. Windows break, children cry and startled adults call the police to find out what caused the "explosion!"
Because sound needs air molecules to "work" there is no sound in space. All those "sounds" you hear on your favorite science fiction show are just that, fiction! An explosion could never be "heard" in the vacuum of space. The astronauts can hear each other because there is air inside their helmets for breathing. The astronauts who stood on the moon and pounded rocks never heard any noise!
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