|
Everyone in the Valley knows that this element is a semiconductor & makes up about 28% of Earth's crust |
silicon
|
$200 |
J |
ARTS & SCIENCES |
2017-10-05 |
#7604 |
|
The Earth's crust consists of about 46% oxygen; this element is second most abundant at about 28% |
silicon
|
$1,200 |
DJ |
GENERAL SCIENCE |
2002-05-13 |
#4086 |
|
This second most common element in the Earth's crust is used to make transistors & microchips |
silicon
|
$600 |
DJ |
SCIENCE |
1991-02-11 |
#1491 |
|
98% of the world's rock consist mostly of oxygen & this element |
silicon
|
$1,000 |
DJ |
SCIENCE |
1988-12-01 |
#979 |