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What are the most abundant minerals in the Earth crust?

Pertanyaan

The following text is for questions 5 to 8.


    Minerals are defined as solid, inorganic, naturally-occurring substances with a definite chemical formula and general structure. Almost all chemical elements in the Earth's crust are associated with at least one mineral.

    They vary in color, hardness, density, crystal form, crystal size, transparency, composition, location and abundance. Several minerals are radioactive (uranophane), while others are magnetic (magnetite). Several minerals are uncombined elements, such as gold, silver, sulfur, bismuth, copper, and platinum. Certain minerals glow with a vibrant luminescence after exposure to ultraviolet light, such as fluorite (calcium fluoride). Feldspar (a potassium aluminum silicate) and quartz (silicon dioxide) are the most abundant minerals found in the Earth's crust.

Adopted from: http://www.geog.ucsb.edu/- dylan/mtpe/geosphere/topics/rx/minerals.html (April 5, 2020)

What are the most abundant minerals in the Earth crust?

  1. Gold and silver

  2. Fluorite and platinum

  3. Bismuth and copper

  4. Feldspar and quartz

D. Putri

Master Teacher

Mahasiswa/Alumni Universitas Negeri Yogyakarta

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah D. Feldspar and quartz.

Pembahasan

Perintah dari soal tersebut adalah menjawab pertanyaan berdasarkan teks.

Makna dari kalimat soal adalah "Mineral apa yang paling banyak terdapat di kerak bumi?"

Untuk menjawab soal tersebut, perlu diperhatikan pada kalimat terakhir di paragraf ke dua yaitu "Feldspar (a potassium aluminum silicate) and quartz (silicon dioxide) are the most abundant minerals found in the Earth's crust." artinya "Feldspar (potasium aluminium silikat) dan kuarsa (silikon dioksida) adalah mineral paling banyak ditemukan di kerak bumi."

Jadi, jawaban yang benar adalah D. Feldspar and quartz.

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