1 A spiral winds in a continuous curve
- Slides: 114
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A spiral winds in a continuous curve round a point. 2
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Some spirals are man made. Others are found in natural things such as plants and animals. 6
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This type of spiral is called an Archimedean spiral after the Greek mathematician Archimedes. In an Archimedean spiral the gap between the curves of the spiral stays 39
Archimedes was a mathematician who lived in Greece from 287 BC to 212 BC. 40
Greece 41
Archimedes drew a special spiral by pulling the legs of a pair of compasses apart while turning the compasses. 42
Circles that are one inside the other and have the same centre are called 43 concentric circles.
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How much of the square is yellow? 1 whole 1 2 1 4 1 8 1 16 1 32 67
Copy these numbers and continue the pattern. 1 1 2 1 4 1 1 8 16 1 1 1 32 64 128 1 256 Write down a rule that explains how to find the next number. 68
These spirals are called Baravelle spirals are made with triangles 69
Draw a square with sides 16 cm long? What is the area of the square? 70
Mark the midpoint of each side of the square 71
Joint the midpoints to make a new square Colour the bottom right triangle. 72
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Mark the midpoint of each side of the new square. 74
Join the midpoints to make a new square. Colour the triangle underneath the new square. 75
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Continue to draw new squares and colour triangles until the square is too small to divide again. 77
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Knitted wall hanging made from Baravelle spirals 79
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Leonardo of Pisa (1170 – 1250 AD) was an Italian mathematician. He is sometimes called Fibonacci is famous for helping to spread the Hindu Arabic numbers in Europe. These numbers replaced the Roman number system. 85
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There is a special sequence of numbers called the Fibonacci sequence because Fibonacci wrote about this sequence. 0 , 1 , 2 , 3 , 5 , 8 , 13 , 21 … 87
Fibonacci numbers can be found in many places, for example the number of petals on a flower is often a Fibonacci number. 2 1 3 13 5 88 21
The numbers in the Fibonacci sequence can be used to form a spiral. This spiral can be found in natural things and is sometimes called the golden spiral. Chameleon's tail Nautilus Shell 89
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- Baravelle spiral
- How do local winds and global winds differ
- Local and global winds
- How does the air move in a sea breeze?
- Global winds and local winds
- Wind belts
- What is software structure
- Spiral circle spiral
- Spiral angle in transition curve formula
- Present simple present continuous past simple
- Present continuous vs future
- J curve vs s curve
- Hyperbolic vs sigmoidal
- S curve and j curve
- Balanced occlusion gpt 9 definition
- The climate of india is strongly influenced by______.
- High pressure winds
- Doldrums location
- Master the storm is raging
- Diurnal winds
- Land winds
- Three types of general winds s190
- Global wind belts
- The storm
- Cont’n air
- Geostrophic wind
- Causes of el niño
- Veering and backing winds
- Trade winds
- Vertical axis wind turbine ppt
- Analyze the
- Veering and backing of wind
- Permanent winds
- Which statement describes global winds?
- Which blow steadily toward the equator?
- Trade winds
- And the fat worms waiting on a dawn bright lawn
- Southeast trade winds
- Wind is caused by differences in: *
- Chicago illinois (latitude 42°n) is located in the ____
- In orographic lifting clouds form when moist winds
- Surface pressure map
- Blowin in the winds
- Our brains ache
- Satellite derived winds
- Satellite derived winds
- Global winds
- Low level prognostic chart
- Local winds are produced by
- Indus river valley timeline
- Global winds facts
- Green band
- Horse latitude
- Solar winds
- Winds that blow over short distances are called
- Types of winds
- Thermal wind
- Diagram of imaginary continent on earth
- How are winds named
- What does smh mean
- A land breeze usually originates during the
- Characteristics of wind turbine
- Diurnal winds
- Identify three effects of low humidity s190
- Oxymoron i
- Study jams air pressure and wind
- Flowing flakes that flock
- How do waves form
- Oaks grow strong in contrary winds
- Vad winds
- How to read metar remarks
- High pressure winds
- Trade winds
- What causes wind
- Types of winds
- What causes winds
- How does wind affect weather and climate
- What is the difference between global and local winds?
- Lesson 3 the war winds down
- Future perfect and future continuous exercises
- Schema past perfect
- Future perfect simple and future continuous exercises
- Past continuous vs past simple vs past perfect
- Continuous monitoring vs continuous auditing
- Past perfect continuous tense vs present perfect continuous
- Present simple vaje
- Continuous auditing tools
- Cut past continuous tense
- Past simple past perfect and past continuous
- Past perfect simple and past perfect continuous
- Nellie to leave for moscow tomorrow
- S+was/were+ving+o
- 7 s's of a crime scene
- Logarithmic spiral definition
- Hout
- Holstein lewis fraktur
- Spherical spiral
- Elliptical spiral and irregular
- Spiral kariyer kalıbı
- Spiral leaf arrangement
- Pnf diagonal patterns lower extremity
- Vestibulocochlear nerve
- Gambar pola pengolahan tanah
- 3 subject spiral
- Formwork is 14687
- Construct a square root spiral
- Lattice imperfections
- Korsningsschema färgblindhet
- Plastic centroid
- Tujuann
- Sentrolesital
- Spiral dynamics stages
- She is the mother of contemporary dance
- Ekman spiral
- Spiral groove of the humerus