Sand
Loose particles that are usually found
in beaches and deserts. Sand is made up of grains (tiny parts) of rocks
and other substances such as corals.
Sand is mainly composed of silica (silicon dioxide SiO2).
Sand can be melted to make glass. Another major use
of sand is to make semiconductor.
Carl Sagan once mentioned in
his series "Cosmos" that there are more stars in the Universe than there
are grains of sands on all the beaches on Earth.
Pasir
Zarah-zarah tercerai yang lazim dijumpai di pantai dan gurun. Pasir
terdiri butir-butir batu dan bahan lain seperti terumbu karang.
Juzuk utama pasir ialah silika (silikon dioksida SiO2).
Pasir dapat dileburkan untuk
membuat kaca.
Satu lagi penggunaan pasir adalah dalam pembuatan semikonduktor.
Carl
Sagan
pernah
menyatakan dalam sirinya "Cosmos" bahawa terdapat lebih banyak
bintang di alam semesta daripada bilangan butir-butir pasir yang
terdapat pada Bumi.
