The Water Cycle Each snowflake begins as a single snow crystal.
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Transcript of The Water Cycle Each snowflake begins as a single snow crystal.
The Water Cycle
Each snowflake begins as a single snow crystal.
Each snowflake begins as a single snow crystal.
A snow crystal forms in one of two ways, depending on the temperature within the cloud.
Each snowflake begins as a single snow crystal.
A snow crystal forms in one of two ways, depending on the temperature within the cloud.
1. At warmer temperatures, between 32˚ F and -40˚ F, a dust particle within the cloud attracts a water droplet and then the water droplet freezes into a snow crystal.
Each snowflake begins as a single snow crystal.
A snow crystal forms in one of two ways, depending on the temperature within the cloud.
1. At warmer temperatures, between 32˚ F and -40˚ F, a dust particle within the cloud attracts a water droplet and then the water droplet freezes into a snow crystal.
2. At colder temperatures, below -40˚ F, the water vapor condenses into an ice crystal without liquefying.
Every Every snowflake starts out as the same basic shape.
By the time each snowflake touches the ground, it is
uniqueunique.
How is this possible?
Temperature
Temperature
The warmer the air inside the cloud, the smoother the tips of
the snow crystal will be.
Temperature
The colder the air inside the cloud, the sharper the tips of
the snow crystal will be.
Humidity
Humidity
The dryer the air inside the cloud, the simpler the snow
crystal will be.
Humidity
The more humid the air inside the cloud, the more complex the
snow crystal will be.
• 8” x 8” Paper• Scissors• Standard Ruler• Pencil
1.
2.
3.
4.
5.
6.
• Hexagon
Line of Symmetry: a line that cuts an object in half so that the two halves are
mirror images of each other.
Line of Symmetry: a line that cuts an object in half so that the two halves are
mirror images of each other.
•Material
•Size
•Dimension
2-Dimensional & 3-Dimensional Objects
2-Dimensional & 3-Dimensional Objects
Circle
2-Dimensional & 3-Dimensional Objects
Circle Sphere
2-Dimensional & 3-Dimensional Objects
Square
2-Dimensional & 3-Dimensional Objects
Square Cube
2-Dimensional & 3-Dimensional Objects
Triangle
2-Dimensional & 3-Dimensional Objects
Triangle Triangular Prism
2-Dimensional & 3-Dimensional Objects
Rectangle
2-Dimensional & 3-Dimensional Objects
RectangleRectangular Prism
2-Dimensional & 3-Dimensional Objects
Hexagon
2-Dimensional & 3-Dimensional Objects
Hexagon Hexagonal Prism
• 18 magnetic bars• 12 magnetic balls
Does a hexagonal prism have a line of symmetry?
Every Every snowflake starts out as the same basic shape – a
hexagonal prism.
Why?
•1 oxygen molecule•2 hydrogen molecules
Do you see the similarities in
shape?
crystal lattice formed by frozen water molecules
snowflake
Do you see the similarities in
shape?
crystal lattice formed by frozen water molecules
snowflake
a process by which materials build themselves without
assistance.
the manipulation of materials at the atomic or molecular level
the manipulation of materials at the atomic or molecular level
1 nanometer = 1 billionth of a meterOR
1 nanometer = 0.000000001 meters
the manipulation of materials at the atomic or molecular level
1 nanometer = 1 billionth of a meterOR
1 nanometer = 0.000000001 meters
Example: a strand of hair is 100,000 nanometers across
Example 7
tennis balls
Example 7
tennis balls
car wax
Example 7
tennis balls
car wax
stain-resistant clothes
Example 7
tennis balls
car wax
stain-resistant clothes
Game Boys
Example 7
cell phones
Example 7
cell phones
flexible electronics
Example 7
cell phones
flexible electronics
bandages
Example 7
All snowflake images courtesy of www.snowcrystals.com
