ACMNA149 - I NDEX N OTATION (P OWERS OF ). What type of numbers do you see?
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Transcript of ACMNA149 - I NDEX N OTATION (P OWERS OF ). What type of numbers do you see?
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ACMNA149 - INDEX NOTATION (POWERS OF)
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Types of Numbers
What type of numbers do you see?
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Types of Numbers: Square Numbers
Square Numbers!
Why do you think these are called square numbers?
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Have you ever heard of the term “squared” or seen this:
1 2x2=43x3=9 5x5=25 6x6=364x4=16
42
Types of Numbers: Square Numbers
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The term “squared” or “to the power of 2”:
42
means a number multiplied by itself:E.g.
1² = 1x1 = 12² = 2x2 = 47² = 7x7= 49 9² = 9x9 = 81
Types of Numbers: Square Numbers/To The Power of 2
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1 4 9 16 25 36
Heading: Square Numbers/To The Power of 2
1 = 1x1 = 12
2 = 2x2 = 42
Complete the pattern to calculate all of the squared/to the power of 2 numbers to 12² :
Types of Numbers: Square Numbers/To The Power of 2
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Have you ever seen this:
43
What does the little three (³) mean?
Cubed!
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The term “cubed” or “to the power of 3”:
43
E.g. 1³ = 1x1x1 =
2³ = 2x2x2 = 7³ = 7x7x7 = 9³ = 9x9x9 =
10³ = 10x10x10 =
Types of Numbers: Cubed Numbers/To The Power of 3
10
10
10
means a number multiplied by itself and then by itself again:
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You can use brackets to help you solve powers of equations:
Types of Numbers: Cubed Numbers/To The Power of 3
10
10
10
10³ = (10x10)x10=
7³ = (7x7)x7 =
9³ = (9x9)x9 =
49
81
100
343
729
1000
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How do we say these numbers?
Types of Numbers:
To the power of…
7² :
5³ :
5 : 7
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Solve these powers of (showing all working out):
Types of Numbers:
The Power of…
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 =
49
125
78125
(
(
)
)
25
25
125
625
3125
15625
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Solve these “powers of ” for 10 and look for the pattern!
Types of Numbers: The Power of…
10² :
10³ :
10 x 10 = 100
10 x 10 x 10 =
10 : 10 x 10 x 10 x 10 =
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 :
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 =
1000
10,000
100,000
1,000,000
10,000,000
100,000,000
1,000,000,000
10,000,000,000
4
5
6
7
8
9
10
10 = 10 10 = 0.1
1
0
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Types of Numbers:
We can call numbers with “powers of” exponential numbers!
Have you heard of the words “exponent” or “exponential”?
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Types of Numbers: 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.
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Types of Numbers: 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?
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Types of Numbers: We can call numbers with “powers of” exponential numbers!
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Types of Numbers: We can call numbers with “powers of” exponential numbers!
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What would happen to the line in a graph representing exponential
decrease/decline?
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What would happen to the line in a graph representing exponential
decrease/decline?
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Let’s take a look at how scientists use to “10 to the power of….”
Types of Numbers:
10 to the power of …
This is a trip at high speed, jumping distances by factor of 10.
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See can see a bunch of leaves, in the garden.
100
1 meter
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Start our trip upwards ....
We can see the foliage.
101 10 meters
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At this distance we can see the limits of the forest and the edifications.
102100 meters
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We will pass from meters to kilometers..
Now it is possible to jump with a parachute ...
103
1 km
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The city can be observed but we really can not see the houses.
104
10 km
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At this height, the state of Florida - USA, can be seen..
105
100 km
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Typical sight from a satellite.
106
1.000 km
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The north hemisphere of Earth, and part of South America.
107
10.000 km
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The Earth starts looking small...
108100.000 km
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The Earth and the Moon’s orbit in white....
1091 million km
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Part of the Earth’s Orbit in blue.
1010 10 millon km
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1011100 millon km
Orbits of: Venus and
Earth...
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Orbits of: Mercury, Venus, Earth, Mars and Jupiter.
1012
1 billion km
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At this height of our trip, we could observe the Solar System and the orbits of the planets
101310 billon km
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1014
100 Billon kmThe Solar System starts looking small...
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The Sun now is a small star in the middle of thousands of stars...
1015
1 trillion km
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At one light-year the little Sun star is very small
1016
1 light-year
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Here we will see nothing in the infinity....
1017
10 light-years
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Only stars and Nebulae...
1018
100 light-years
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10191,000 light-years
At this distance we start to travel the Via-Lactea (Milky Way), our galaxy.
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We continue our travel inside the Via-Lactea.
1020
10,000 light-years
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We start reaching the periphery of the Via-Lactea.
1021
100,000 light-years
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At this tremendous distance we can see all the Via-Lactea & other galaxies too...
1022
1 million light-years
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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.
1023 - 10 million light-years
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1022
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1021
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1020
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1019
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1018
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1017
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1016
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1015
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1014
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1013
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1012
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1011
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1010
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109
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108
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107
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106
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105
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104
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103
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102
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101
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100
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Now let’s get microscopic!
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Getting closer at 10 cm ...We can delineate the leaves.
10-1
10 Centimeters
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At this distance it is possible to observe the structure of the leaf.
10-2
1 Centimeter
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The cellular structures start showing...
10-3
1 Millimeter
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The cells can be defined.
You could see the union between them.
10-4
100 microns
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Start our trip inside the cell...
10-510 microns
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The nucleus of the cell is visible.
10-6
1 micron
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Again we changed the messuring unit to adapt to the minúscule size.
You could see the chromosomes.
10-
71.000
Angstroms
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In this micro universe the DNA chain is visible.
10-8
100 Angstroms
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...the chromosomes blocks can be studied.
10-9
10 Angstroms
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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...
10-10
1 Angstrom
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In this miniature world we could observe the electrons orbiting the atoms.
10-11
10 picometers
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An inmense empty space between the nucleous and the electron orbits...
10-12
1 Picometer
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At this incredible and minuscule size we could observe the nuceous of the atom.
10-13
100 Fentometers
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Now we could observe the nucleous of the carbon atom
10-14
10 Fentometers
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Here we are in the field of the scientific imagination, face to face with a proton.
10-15
1 Fentometer
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Examine the ‘quark’ particules
There is nowhere more to go...
At the limits of current scientific knowledge .
This is the limit of matter...
10-16100 Atometers