elements: where on earth?
DESCRIPTION
ELEMENTS: Where on earth? . The Crust. The outermost layer of the Earth is called the crust. Most of the crust is made from only five elements. It is rare for elements to occur alone, although some, like gold and silver, do. The Crust. The Atmosphere. - PowerPoint PPT PresentationTRANSCRIPT
ELEMENTS: Where on earth?
The CrustO The outermost layer of the Earth is
called the crust. O Most of the crust is made from only
five elements. O It is rare for elements to occur alone,
although some, like gold and silver, do.
The CrustElement % by MassOxygen 47%Silicon 28%Aluminum 8%Iron 5%Calcium 3%Others 9%
The Atmosphere
O The layer of gases surrounding the Earth is called the atmosphere.
O The oxygen in the atmosphere is necessary for most life on Earth.
The AtmosphereElement % by Mass
Nitrogen 78%
Oxygen 21%
Others 1%
The Ocean
O Ocean water is about 97% water, and the rest is made of other elements and gases.
O There have been around 84 elements identified in sea water.
The Ocean
Element % by Mass
Oxygen 85%
Hydrogen 10%
Chlorine 2%
Sodium 1%
Others 2%
Living Things
O Cells make up living things, and elements make up cells.
Living Things
Element % by Mass
Hydrogen 59%Oxygen 24%Carbon 11%Nitrogen 4%Others 2%
Top 8 ElementsOThe following 8 elements are the most important for you to know. The are……….
Guess the 8! (KORT Tickets)
OHONOCONa
Guess the 8! (KORT Tickets)
OHeOOOClOCa
The Top 8 (Copy into your journal)
H
Hydroge
n
He
Helium
N
Nitrogen
O
Oxygen
C
Carbon
Cl
Chlorine
Na
Sodium
Ca
Calcium