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Vocabulary practice flashcards based on the most frequently tested passages, linguistic relationships, entities, and conceptual terms in the Computerized General Aptitude Test (GAT / القدرات المحوسب).
1960 Chile Earthquake (زلزال تشيلي ١٩٦٠)
The most powerful scientifically recorded earthquake, registering 9.5 on the Richter scale, which killed 2,000 people, displaced 3,000, and sent destructive tsunamis across the Pacific that killed 61 in Hawaii and 138 in Japan.
1964 Alaska Earthquake (زلزال ألاسكا ١٩٦٤)
The most violent earthquake recorded in the Northern Hemisphere, reaching a magnitude of 9.2 on the Richter scale and resulting in 125 fatalities.
1957 Andreanof Islands Earthquake (زلزال جزر أندريانوف ١٩٥٧)
A major seismic event in Alaska measuring 9.1 in magnitude that completely destroyed Adak Island, wrecked the shipyard on neighboring Unimak Island, and damaged extensive oil pipelines in Sand Bay.
Land Inundation Technique (تقنية غمر الأرض)
A rangeland water management method involving the construction of earthen dams and dikes to divert and spread surface runoff across grazing areas, supplying between 5 and 10 times the volume of regular rainfall.
Carotene (الكاروتين)
A dark-orange, water-soluble pigment found in saffron that possesses antioxidant and anti-tumor properties, aids in preventing cardiovascular disease, and stimulates immune cells to destroy cancer cells.
Oral Reading (القراءة الجهرية)
A reading practice defined as recognizing words and their meanings while orally interpreting the author's ideas to others to entertain, inform, or persuade them.
Al-Hajeer (الهجير)
A classical Arabic term denoting the peak period of intense, scorching midday heat, against which primitive barriers and sunshades prove ineffective.
Al-Kundariyyah Camels (الجمال الكندرية)
A thoroughbred class of authentic Arabian camels bred and maintained historically by Arabs specifically for adornment, prestige, and formal occasions.
Bactrian Camel (الجمل البكتيري)
The two-humped camel species scientifically recognized as native to cold geographical zones, representing one of the two ancestral lineages of all camels worldwide.
Dromedary / Arabian Camel (الجمل العربي)
The single-humped camel species adapted to hot desert climates like the Arabian Peninsula, whose core body temperature fluctuates between 34∘C and 41∘C to endure extreme heat.
Lip Print (بصمة الشفاه)
A unique biometric identifier captured using invisible ink and pressure-sensitive paper, proven to be distinct for every human and recoverable even from cigarette butts.
Retinal Scan (بصمة العين)
A modern biometric scanning technique that photographs the vascular network of the retina through a specialized lens, completing the verification process in 1.5seconds or less.
Enzymes (الإنزيمات)
Organic biological catalysts that accelerate intracellular chemical reactions without being consumed in the process, functioning optimally in the human body at a temperature of 37∘C.
Development (التنمية)
An intentional, organized, and qualitatively rapid process of transformation driven by deliberate human agency to achieve comprehensive progress across all spheres of society.
Growth (النمو)
A spontaneous, slow, and primarily quantitative change that occurs gradually without requiring conscious human intervention.
Atmospheric Ozone (الأوزون الجوي)
A triatomic form of oxygen (O3) concentrated at altitudes between 20km and 35km in the stratosphere that absorbs hazardous ultraviolet radiation emitted by the sun.
Water Injection (حقن الماء في الآبار)
A secondary petroleum recovery process wherein engineers pump large quantities of water into injection wells to drive crude oil toward production wells, increasing extraction efficiency.
Dead Sea (البحر الميت)
The lowest land elevation on Earth's surface, possessing hypersaline waters that prevent the survival of aquatic organisms and permit effortless floating, while facing gradual desiccation from severe evaporation and mineral extraction.
Kaaba Kiswah Factory (مصنع كسوة الكعبة)
A dedicated facility established by Saudi Arabia in Umm al-Joud in Mecca, officially opened in 1977 to manufacture the black silk gold-inscribed covering of the Kaaba after deliveries from Egypt ceased permanently in 1962.
Natural Musk (المسك الطبيعي)
An aromatic secretion extracted from an egg-sized abdominal glandular sac found exclusively in adult male musk deer, exhibiting the viscosity of honey and serving as a fixative in perfumery.
Hijri Calendar (التقويم الهجري)
The Islamic lunar dating system officially instituted under Caliph Umar ibn al-Khattab, using the Prophet Muhammad's migration from Mecca to Medina as its epoch, with a lunar year that is approximately 11days shorter than the solar Gregorian year.
Qitmeer (القطمير)
The delicate, paper-thin fibrous membrane that directly encases the hard pit or seed inside a date fruit.
Spina Bifida (الصلب المشقوق)
A congenital neural tube defect occurring in roughly 1 out of every 1,000 live births, whose incidence can be reduced by 50–70% through maternal pre-pregnancy supplementation with folic acid.
Egocentrism / Self-Centering (التمركز)
A cognitive bias wherein an individual views their personal perspective as the center of reality, disproportionately magnifying their own rights while diminishing their duties, which impedes intellectual development and justice.
Job Burnout (الاحتراق الوظيفي)
A psychological state of chronic vocational exhaustion characterized by continuous preoccupation with and execution of work obligations outside office hours at home.
Synthetic Biology (البيولوجيا الاصطناعية)
An interdisciplinary field combining biology and engineering principles to design, program, or modify microorganisms and biological pathways to produce pharmaceuticals, industrial compounds, and clean energy.
Emotional Intelligence (الذكاء العاطفي)
The psychological capacity to recognize, interpret, and constructively manage personal emotions and the feelings of others to optimize social interaction and decision-making.
Silkworm (دودة القز)
A domesticated lepidopteran insect known as the 'queen of fabrics' whose emerging larvae measure about 0.6cm before developing into adults with an average wingspan of 3.8cm that produce natural silk threads.
Salk Polio Vaccine (لقاح سالك)
An injectable vaccine developed by Jonas Salk in 1953 using formaldehyde-inactivated poliovirus strains, demonstrated safe in large-scale trials involving 1,830,000 schoolchildren in 1954.
Money Laundering (غسيل الأموال)
The illicit financial process of moving illegally acquired funds through international and domestic banking tiers to obscure their criminal origin and confer an ostensibly legitimate status upon them.
Al-Safadi (الصفدي)
Salah al-Din Khalil Aybak (696–764AH), a prolific Mamluk-era encyclopedist, author, and poet who composed approximately 500 volumes across 50 distinct works without excessive rhymed prose (saj').
Abu Hayyan al-Tawhidi (أبو حيان التوحيدي)
A prominent fourth-century AH philosopher and essayist praised as the 'philosopher of literati,' known for his encyclopedic culture, conflicted temperament, and the symbolic act of burning his own manuscripts late in life.
Al-Jahiz (الجاحظ)
Abu Uthman Amr ibn Bahr (159–255AH), an illustrious Abbasid prose stylist born in Basra who authored celebrated works including 'Kitab al-Hayawan', 'Al-Bayan wa al-Tabyin', and 'Al-Bukhala', named for his protruding eyes.
Maglev Trains (القطارات المغناطيسية)
High-speed rail transport systems utilizing magnetic levitation that attain higher velocities, produce minimal noise, consume electrical energy with low pollution output, and require reduced track maintenance.
Halite / Rock Salt (الملح الصخري)
A ubiquitous mineral compound composed of sodium chloride (NaCl) that provides chlorine for gastric hydrochloric acid and sodium for nerve signal transmission, replenished infinitely through natural and artificial marine salt pans.