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DrummerActivity 1 Street

A teaching sequence from the Studio Magic unit

cracking science!

Activity from the Studio Magic unit © upd8 wikid, built by cracking science 2009 This page may have been changed from the original

a b c d e f g h i j k l m

n o p q r s t u v w x y Z

Y8 Studio Magic

Crack the code and work out what the

keywords are.

Write the words down on your whiteboard for

later.

3

describe what makes sound (level 4)describe how sounds travel (level 5)

investigate what makes some sounds louder than others (level 6)

We are learning to…

Meet Zane.

4

I’m broke and I’ve got nowhere to live. All I have left are my drumsticks and talent.

Engage

Engage 5

I need an agent to get noticed. You’ll do! I’ll call you agent Z.

Your first job is to get me a drum!

Competition!Win the drum of your dreams.

6

Competition…Win Competition…Win the drum of your the drum of your dreamsdreams!!Work out answers to these questions … May the best explainer win!What starts sounds? What makes some sounds

loud … and others soft?Sounds travel – How? Where? Through what and why?

A sound hits a surface. What happens? discussSS1Elicit /

Explore

When you hit a drum, the skin vibrates.

7 SS 10

All sounds start as vibrations in materials.

This starts a sound.

Explain

8

The bigger the vibrations, the louder the sound.

Explain

A sound travels from its source in all directions.

9

This transfers energy.

Here’s how …

Explain

Sound travels through gases, like the air.

Explain 10 SS 11

Sound travels through liquids, like water.

Explain 11

Sound travels through solids, like wood, metals or ice.

Explain 12

Sound travels faster in liquids and solids than in gases because the particles are closer together in liquids and solids.

Sound waves cannot travel in a vacuum …

Explain 13discuss

… because there are no particles to vibrate!

14

The sound wave has been reflected.

Reflected sound is called an echo. The further you are from a surface, the longer it takes to hear the echo.

When a sound wave hits a hard surface, it bounces off the surface.

Explain

Sound

One word to describe how sounds start.

Two words to describe which direction sounds travel in.

Three words to describe what sounds travel through.

Four words to explain why sounds cannot travel through a vacuum.

Five words to say what happens when sound hits a surface.

16

describe what makes sound (level 4)describe how sounds travel (level 5)

investigate what makes some sounds louder than others (level 6)

We are learning to…

Well done!

17

Come in to collect the drum of your dreams!Explain

My name is Drew. I was impressed with your

answers about sound.

Sound waves are longitudinal waves.

Particles do not travel from one end of the wave to the other – the wave is energy moving through the material.

18

In sound waves, the vibrations and energy transfer are in the same direction.

Explain

The vibrating particles make up a sound wave.

19

When you hit a drum, the air particles next to it vibrate.

The particles are squashing together and then getting further apart.

The vibrating air particles make the particles next to them vibrate.

Then these particles make the particles next to them vibrate.

Explain

I just need to check you deserve that drum.

Evaluate

20

What are the missing words?

Sounds start as __________.

Sound travels as __________.

The bigger the vibration, the ________ the sound.

Sounds transfer __________.

Sound cannot travel in a __________.

Reflected sound makes an __________.

discuss

I want a selection of drums of different

loudness.

Elicit / Explore 21 SS1

Use science techniques to compare their loudness

Can you do this, Agent Z?

Explain 3

22

Scientists also measure loudness – or sound levels – in decibels, dB.

An increase of 10 dB means a sound is twice as loud.

SS8

Why are some sounds louder than others?1. Drop a marble from 10cm onto to drum. Measure the loudness of the sound.

2. Now drop the marble from 20cm, 30cm, 40cm and 50cm and measure the loudness of the sound.

3. Record the results in the table.

ExtensionLook for outliers in your results. Say how you would

deal with these.How could we make the results more reliable?

Height marble is dropped from (in cm)

Loudness of sound (in decibels/dB)

10

20

30

40

50

What type of graph will we need to draw for this data?

Studio Magic Drummer 2 Loud SS6

Conclusion

Studio Magic Drummer 2 Loud SS7

Drum roll Oscilloscope

We found out that the higher the marble drop, the louder the sound.

Sound carries energy and travels as waves. The bigger the wave, the louder the sound. We say more energy is being transferred.

We can show waves in many waves.

Describe what this picture shows.

Now listen to the sound.

Which wave trace shows the quietest sound? Why?

What could these diagrams show about sound?

Sound starts as a BLANK and travels as a BLANK

vibration and wave

In sound waves, the vibrating particles and energy are transferred

in the same BLANK.

These are called BLANK waves.

Direction and longitudinal

energy and biggeramplitude

Loud sounds transfer more BLANK and so the waves are BLANK

The height of the wave is called the BLANK

The loudness of sound is measured in BLANK

decibels

Sound can travel through BLANK, BLANK and BLANK but cannot travel through a BLANK

solid, liquid, gas, vacuum