the world of snowflakes

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The World of Snowflakes. The Water Cycle. The Water Cycle. evaporation. condensation. The Water Cycle. evaporation. condensation. The Water Cycle. precipitation. evaporation. Snowflakes form at the condensation stage. The Water Cycle. Snowflakes form at the condensation stage. - PowerPoint PPT Presentation

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Page 1: The World of Snowflakes
Page 2: The World of Snowflakes

The Water Cycle

Page 3: The World of Snowflakes

The Water Cycle

evaporation

Page 4: The World of Snowflakes

The Water Cycle

evaporation

condensation

Page 5: The World of Snowflakes

The Water Cycle

evaporation

precipitation

condensation

Page 6: The World of Snowflakes

The Water CycleSnowflakes form at the condensation stage.

Page 7: The World of Snowflakes

The Water CycleSnowflakes form at the condensation stage.

The water vapor condenses directly into ice!

Page 8: The World of Snowflakes

The Water CycleSnowflakes form at the condensation stage.

The water vapor condenses directly into ice!

This process is called

“sublimation.”

Page 9: The World of Snowflakes

Every Every snowflake starts out as the same basic shape.

By the time each snowflake touches the ground, it is

uniqueunique.

Why?

Page 10: The World of Snowflakes
Page 11: The World of Snowflakes

temperature

Page 12: The World of Snowflakes

temperature

Temperature: the measurement of how hot or cold something is.

Page 13: The World of Snowflakes

humidity

Page 14: The World of Snowflakes

humidity

Humidity: the amount of water vapor in the air.

Page 15: The World of Snowflakes
Page 16: The World of Snowflakes
Page 17: The World of Snowflakes
Page 18: The World of Snowflakes

•A snowflake is made of ice crystals.

Page 19: The World of Snowflakes

•A snowflake is tiny.

•A snowflake is made of ice crystals.

Page 20: The World of Snowflakes

•A snowflake is tiny.

•A snowflake is made of ice crystals.

Page 21: The World of Snowflakes

•A snowflake is symmetrical.

•A snowflake is tiny.

•A snowflake is made of ice crystals.

Page 22: The World of Snowflakes

Symmetry – Two Dimensional Polygons

Key words:

Page 23: The World of Snowflakes

Symmetry – Two Dimensional Polygons

Key words:

A regular polygon is a polygon in which all sides are the same length.

Page 24: The World of Snowflakes

Symmetry – Two Dimensional Polygons

Key words:

A regular polygon is a polygon in which all sides are the same length.

A line of symmetry for a polygon is any line on which the polygon can be folded so that one half of the polygon will fall exactly on the other half.

Page 25: The World of Snowflakes
Page 26: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3

4

5

6

Page 27: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle

4

5

6

Page 28: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle 3

4

5

6

Page 29: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle 3

4 square

5

6

Page 30: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle 3

4 square 4

5

6

Page 31: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle 3

4 square 4

5 pentagon

6

Page 32: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle 3

4 square 4

5 pentagon 5

6

Page 33: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle 3

4 square 4

5 pentagon 5

6 hexagon

Page 34: The World of Snowflakes

Number of Sides of Regular Polygon

Name of Regular Polygon

Number of Lines of Symmetry

3 triangle 3

4 square 4

5 pentagon 5

6 hexagon 6

Page 35: The World of Snowflakes

How many lines of symmetry does Snowflake 1 have? __________

How many lines of symmetry does Snowflake 2 have? __________ What regular polygons are these snowflakes? __________________

Page 36: The World of Snowflakes

•A snowflake is symmetrical.

•A snowflake is tiny.

•A snowflake is made of ice crystals.

Page 37: The World of Snowflakes

•A snowflake is 3 dimensional.

•A snowflake is symmetrical.

•A snowflake is tiny.

•A snowflake is made of ice crystals.

Page 38: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Page 39: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Circle

Page 40: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Circle Sphere

Page 41: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Square

Page 42: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Square Cube

Page 43: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Triangle

Page 44: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Triangle Triangular Prism

Page 45: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Rectangle

Page 46: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

RectangleRectangular Prism

Page 47: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Hexagon

Page 48: The World of Snowflakes

2-Dimensional & 3-Dimensional Objects

Hexagon Hexagonal Prism

Page 49: The World of Snowflakes
Page 50: The World of Snowflakes

Every Every snowflake starts out as the same basic shape – a

hexagonal prism.

Why?

Page 51: The World of Snowflakes

•1 oxygen atom•2 hydrogen atoms

Page 52: The World of Snowflakes
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Page 54: The World of Snowflakes
Page 55: The World of Snowflakes

Do you see the similarities in

shape?

Crystal lattice formed by frozen water molecules

Snowflake

Page 56: The World of Snowflakes

Do you see the similarities in

shape?

Crystal lattice formed by frozen water molecules

Snowflake

Page 58: The World of Snowflakes

Self–assembly: a process by which materials build themselves without

assistance.

Page 59: The World of Snowflakes

Self–assembly: a process by which materials build themselves without

assistance.

Snowflakes self-assemble… they build themselves!

Page 60: The World of Snowflakes

How does a snowflake grow?

Page 61: The World of Snowflakes

How does a snowflake grow?

Initial formation of a snow crystal around a dust particle in the cloud.

Page 62: The World of Snowflakes

How does a snowflake grow?

Initial formation of a snow crystal around a dust particle in the cloud.

Crystal grows into a hexagonal prism.

Page 63: The World of Snowflakes

Crystal grows into a hexagonal prism.

Page 64: The World of Snowflakes

How does a snowflake grow?

Initial formation of a snow crystal around a dust particle in the cloud.

Crystal grows into a hexagonal prism.

Crystal grows larger – corners may sprout “arms.”

Page 65: The World of Snowflakes

Crystal grows larger – corners may sprout “arms.”

Page 66: The World of Snowflakes

How does a snowflake grow?

Initial formation of a snow crystal around a dust particle in the cloud.

Crystal grows into a hexagonal prism.

Crystal grows larger – corners may sprout “arms.”

Crystal moves to different temperatures and different levels of humidity – plates may grow arms.

Page 67: The World of Snowflakes

Crystal moves to different temperatures and different levels of humidity – plates may grow arms.

Page 68: The World of Snowflakes

How does a snowflake grow?

Initial formation of a snow crystal around a dust particle in the cloud.

Crystal grows into a hexagonal prism.

Crystal grows larger – corners may sprout “arms.”

Crystal moves to different temperatures and different levels of humidity – plates may grow arms.

Crystal moves through many different temperatures and different levels of humidity – each change may cause new growth in arms.

Page 69: The World of Snowflakes

Crystal moves through many different temperatures and different levels of humidity – each change may cause new growth in arms.

Page 70: The World of Snowflakes

How does a snowflake grow?

Initial formation of a snow crystal around a dust particle in the cloud.

Crystal grows into a hexagonal prism.

Crystal grows larger – corners may sprout “arms.”

Crystal moves to different temperatures and different levels of humidity – plates may grow arms.

Crystal moves through many different temperatures and different levels of humidity – each change may cause new growth in arms.

Page 71: The World of Snowflakes
Page 72: The World of Snowflakes
Page 73: The World of Snowflakes

Natural Snow Artificial Snow

Page 74: The World of Snowflakes

Natural Snow Artificial Snow

•Ice

Page 75: The World of Snowflakes

Natural Snow Artificial Snow

•Ice •Chemical polymer

Page 76: The World of Snowflakes

Natural Snow Artificial Snow

•Ice

•Melts above 32F

•Chemical polymer

Page 77: The World of Snowflakes

Natural Snow Artificial Snow

•Ice

•Melts at 32F

•Chemical polymer

•Does not melt at 32F

Page 78: The World of Snowflakes

Natural Snow Artificial Snow

•Ice

•Melts at 32F

•Edible

•Chemical polymer

•Does not melt at 32F

Page 79: The World of Snowflakes

Natural Snow Artificial Snow

•Ice

•Melts at 32F

•Edible

•Chemical polymer

•Does not melt at 32F

•Inedible

Page 80: The World of Snowflakes

Natural Snow Artificial Snow

•Ice

•Melts above 32F

•Edible

•Hexagonal prisms

•Chemical polymer

•Does not melt

•Inedible

Page 81: The World of Snowflakes

Natural Snow Artificial Snow

•Ice

•Melts at 32F

•Edible

•Hexagonal prisms

•Chemical polymer

•Does not melt at 32F

•Inedible

•No hexagonal prisms

Page 82: The World of Snowflakes

Artificial Snow (magnified 10 times)

Image of magnified artificial snow.

Page 83: The World of Snowflakes

Artificial Snow (magnified 60 times)

Image of magnified artificial snow.

Page 84: The World of Snowflakes

Natural Snow (magnified 10 times)

Need to find a magnified image of natural snow.

Page 85: The World of Snowflakes
Page 86: The World of Snowflakes

All snowflake images courtesy of www.snowcrystals.com

Page 87: The World of Snowflakes

• 8.5” x 8.5” Paper• Scissors• Standard Ruler• Pencil

Page 88: The World of Snowflakes

1.

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2.

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3.

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4.

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5.

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6.