ACMNA149 - I NDEX N OTATION (P OWERS OF ). What type of numbers do you see?

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Presentation transcript:

ACMNA149 - I NDEX N OTATION (P OWERS OF )

What type of numbers do you see?

Square Numbers! Why do you think these are called square numbers?

Have you ever heard of the term “squared” or seen this: 1 2x2=4 3x3=9 5x5=256x6=364x4=16 4 2

The term “squared” or “to the power of 2”: 4 2 means a number multiplied by itself: E.g. 1² = 1x1 = 1 2² = 2x2 = 4 7² = 7x7= 49 9² = 9x9 = 81

Heading: Square Numbers/To The Power of 2 1 = 1x1 = = 2x2 = 4 2 Complete the pattern to calculate all of the squared/to the power of 2 numbers to 12² :

Have you ever seen this: 4 3 What does the little three ( ³ ) mean? Cubed!

The term “cubed” or “to the power of 3”: 4 3 E.g. 1³ = 1x1x1 = 2³ = 2x2x2 = 7³ = 7x7x7 = 9³ = 9x9x9 = 10³ = 10x10x10 = 10 means a number multiplied by itself and then by itself again:

You can use brackets to help you solve powers of equations: 10 10³ = (10x10)x10= 7³ = (7x7)x7 = 9³ = (9x9)x9 =

How do we say these numbers? 7² : 5³ : 5 : 7

Solve these powers of (showing all working out): 7² : 5³ : 5 : 7 7 x 7 = 5 x 5 x 5 = 5 x 5 x 5 x 5 x 5 x 5 x 5 = ( ( ) )

Solve these “powers of ” for 10 and look for the pattern! 10² : 10³ : 10 x 10 = x 10 x 10 = 10 :10 x 10 x 10 x 10 = 10 : 10 x 10 x 10 x 10 x 10 = 10 x 10 x 10 x 10 x 10 x 10 = 10 :10 x 10 x 10 x 10 x 10 x 10 x 10 = 10 : 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 10 :10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = , ,000 1,000,000 10,000, ,000,000 1,000,000,000 10,000,000, = =

We can call numbers with “powers of” exponential numbers! Have you heard of the words “exponent” or “exponential”?

We can call numbers with “powers of” exponential numbers! The term “Exponential” means something becoming more and more rapid. Viral videos on YouTube:  Once a video becomes “viral”, the number of people viewing it grows exponentially.

We can call numbers with “powers of” exponential numbers! Viral videos on YouTube:  Once a video becomes “viral”, the number of people viewing it grows exponentially. What is “Gangnum Style”? How do you do it? How did you learn it? How did its popularity grow exponentially?

We can call numbers with “powers of” exponential numbers!

What would happen to the line in a graph representing exponential decrease/decline?

Let’s take a look at how scientists use to “10 to the power of….” This is a trip at high speed, jumping distances by factor of 10.

See can see a bunch of leaves, in the garden meter

Start our trip upwards.... We can see the foliage meters

At this distance we can see the limits of the forest and the edifications meters

We will pass from meters to kilometers.. Now it is possible to jump with a parachute km

The city can be observed but we really can not see the houses km

At this height, the state of Florida - USA, can be seen km

Typical sight from a satellite km

The north hemisphere of Earth, and part of South America km

The Earth starts looking small km

The Earth and the Moon’s orbit in white million km

Part of the Earth’s Orbit in blue millon km

millon km Orbits of: Venus and Earth...

Orbits of: Mercury, Venus, Earth, Mars and Jupiter billion km

At this height of our trip, we could observe the Solar System and the orbits of the planets billon km

Billon km The Solar System starts looking small...

The Sun now is a small star in the middle of thousands of stars trillion km

At one light- year the little Sun star is very small light-year

Here we will see nothing in the infinity light-years

Only stars and Nebulae light-years

,000 light-years At this distance we start to travel the Via-Lactea (Milky Way), our galaxy.

We continue our travel inside the Via-Lactea ,000 light-years

We start reaching the periphery of the Via-Lactea ,000 light-years

At this tremendous distance we can see all the Via-Lactea & other galaxies too million light-years

From this distance, all the galaxies look small with inmense empty spaces in between. The same laws are ruling in all bodies of the Universe. We could continue traveling upwards with our imagination, but now we will return home quickly million light-years

10 22

10 21

10 20

10 19

10 18

10 17

10 16

10 15

10 14

10 13

10 12

10 11

10

10 9

10 8

10 7

10 6

10 5

10 4

10 3

10 2

10 1

10 0

Now let’s get microscopic!

Getting closer at 10 cm...We can delineate the leaves Centimeters

At this distance it is possible to observe the structure of the leaf Centimeter

The cellular structures start showing Millimeter

The cells can be defined. You could see the union between them microns

Start our trip inside the cell microns

The nucleus of the cell is visible micron

Again we changed the messuring unit to adapt to the minúscule size. You could see the chromosomes Angstroms

In this micro universe the DNA chain is visible Angstroms

...the chromosomes blocks can be studied Angstroms

It appears like clouds of electrons... These are carbon atoms that formed our world. You could notice the resemblance of the microcosmos with the macrocosmos Angstrom

In this miniature world we could observe the electrons orbiting the atoms picometers

An inmense empty space between the nucleous and the electron orbits Picometer

At this incredible and minuscule size we could observe the nuceous of the atom Fentometers

Now we could observe the nucleous of the carbon atom Fentometers

Here we are in the field of the scientific imagination, face to face with a proton Fentometer

Examine the ‘quark’ particules There is nowhere more to go... At the limits of current scientific knowledge. This is the limit of matter Atometers

Exponents / Indices Video