science

Arqa

Arqa is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Arqa rather than just read about it. In short: Arqa (Arabic: عرقا, romanized: ʿArqā; Akkadian: 𒅕𒋡𒋫, romanized: Irqata) is a Lebanese village near Miniara in Akkar Governorate, Lebanon, 22 km northeast of Tripoli, near the coast. The town was a notable city-state during the Iron Age.

Key takeaways

Arqa belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Arqa to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Arqa from memory before moving on to harder problems.

Reference excerpt

Arqa (Arabic: عرقا, romanized: ʿArqā; Akkadian: 𒅕𒋡𒋫, romanized: Irqata) is a Lebanese village near Miniara in Akkar Governorate, Lebanon, 22 km northeast of Tripoli, near the coast. The town was a notable city-state during the Iron Age. The city of Irqata sent 10,000 soldiers to the coalition against the Assyrian king in the Battle of Qarqar in 853 BC. The former bishopric became a double Catholic titular see (Latin and Maronite). The Roman Emperor Alexander Severus was born there. It is significant for the Tell Arqa, an archaeological site that goes back to Neolithic times, and during the Crusades there was a strategically significant castle.

Names It is mentioned in Antiquity in the Amarna letters of Egypt-(as Irqata), as well as in Assyrian documents. The Roman town was named Caesarea-ad-Libanum (of Lebanon/Phoenicia) or Arca Caesarea.

History

Early Bronze In the Early Bronze IV, the Akkar Plain had three major sites in Tell Arqa, Tell Kazel, and Tell Jamous. The cultural focus had been towards the south and southern Levant, but now changed with more influence from Inner Syria and the use of copper.

Middle Bronze In the MB I the Akkar Plain still saw smaller settlements being added near Tell Arqa and the region reach its highest population density in MB II.

Phase N (Level 14) MB IA-B (compare Qatna J18-17). Phase M (Level 13E-D) MB IIA (compare Qatna J16-14). Phase M (Level 13C) MB IIB (compare Qatna J13-11). Phase M (Level 13B-A) MB IIC/III (compare Qatna J10).

Late Bronze

Amarna Period Irqata (c. 1350 BC)

Arqa has the distinction of being a city-state that wrote one of the 382 Amarna letters to the Pharaoh of Ancient Egypt. The city-state Irqata was the 3rd city of the Rib-Hadda letters, (68 letters), that were the last hold-outs against the (H)Apiru invasion. Sumur(u)-(Zemar) was the 2nd hold-out city besides Rib-Hadda's Byblos, (named Gubla). Eventually, the king of Irqata, Aduna was killed along with other city kings, and also the 'mayor' of Gubla, Rib-Hadda. Rib-Hadda's brother, Ili-Rapih, became the successor mayor of Gubla, and Gubla never fell to the Hapiru. During Rib-Hadda's lengthy opposition to the Habiru, even the city-state of Irqata and its elders, wrote to the Egyptian Pharaoh Akhenaten for assistance. (EA 100, EA for el Amarna). The letter is entitled: "The city of Irqata to the king".

This tablet-(i.e. tablet letter) is a tablet from Irqata. To the King, our Lord: Message from Irqata and its el[d]ers. We fall at the feet of the king, our lord, 7 times and 7 times. To our lord, the Sun: Message from Irqata. May the heart of the king, (our) lord, know that we guard Irqata for him. When the [ki]ng, our lord, sent D[UMU]-Bi-ha-a, he said to [u]s, "Message of the king: "Guard Irqata"! " The sons of the traitor to the king seek our harm; Irqata see[ks] loyalty to the king. As to [ silver ] having been given to S[u]baru al[ong with] horses and cha[riots] , may you know the mind of Irqata. When a tablet from the king arrived (saying) to ra[id] the land that the 'A[piru] had taken [from] the king,'they wa[ged] war with us against the enemy of our lord, the man whom you pla[ced] over us. Truly—we are guarding the l[and]. May the king, our lord, heed the words of his loyal servants. May he grant a gift to his servant(s) so our enemies will see this and eat dirt. May the breath of the king not depart from us. We shall keep the city gate barred until the breath of the king reaches us. Severe is the war against us—terribly! terribly! -EA 100, lines 1-44 (complete)

Hellenistic and Roman period

After the death of Alexander the Great Arca came under the control first of the Lagids then of the Seleucids. When the Romans gained control over this part of western Asia, they entrusted Arca as a client tetrarchy or vassal principality to a certain Sohaimos, who died in AD 48 or 49. It was then incorporated in the Roman province of Syria, but was soon entrusted to Herod Agrippa II. Pliny the Elder counts it among the tetrarchies of Syria. It was at this time that its name was changed to Caesarea, distinguished from other cities of that name by being called Caesarea ad Libanum or Arca Caesarea. Under Septimius Severus (193–211) it was made part of the province of Syria Phoenicia and so became known as Arca in Phoenicia. Under his son Caracalla (198–217) it became a colonia and in 208 Alexander Severus was born at Arca during a stay of his parents there.

Crusades period At the time of the First Crusade, Arca became an important strategic point of control over the roads from Tripoli to Tartus and Homs. Raymond of Toulouse unsuccessfully besieged it for three months in 1099. In 1108, his nephew William II Jordan conquered it and it became part of the County of Tripoli. It resisted an attack by Nur ad-Din, atabeg of Aleppo, in 1167 and another in 1171. It finally fell to Muslim forces of the Sultan Baibars in 1265 or 1266. When Tripoli itself fell in 1289 to the army of Sultan Qalawun and was razed to the ground, Arca lost its strategic importance and thereafter is mentioned only in ecclesiastical chronicles.

Later period In 1838, Eli Smith noted the village, whose inhabitants were Greek Orthodox, located west of esh-Sheikh Mohammed.

Demographics In 2014, Muslims made up 100% of registered voters in Arqa, all of them being Sunni Muslims.

Ecclesiastical history Arca in Phoenicia became the seat of a Christian bishop in the Roman province of Phoenicia Prima, a suffragan of the capital's metropolitan see of Tyre. Of its bishops, Lucianus professed the faith of the First Council of Nicaea at a synod held in Antioch in 363, Alexander was at the First Council of Constantinople in 381, Reverentius became archbishop of Tyre, Marcellinus was a participant at the Council of Ephesus in 431, Epiphanius took part in a synod at Antioch in 448, and Heraclitus participated in the Council of Chalcedon in 451 and was a signatory of the letter that the bishops of the province of Syria Phoenicia sent in 458 to Byzantine Emperor Leo I the Thracian to protest about the murder of Proterius of Alexandria. No longer a residential bishopric, Arca in Phoenicia is today listed by the Catholic Church as a titular see, in two traditions: Latin and Maronite (Eastern Catholic, Antiochian Rite in Syriac).

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Arqa

Start with the simplest possible case. Write down what Arqa claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Arqa before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Arqa ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Arqa

In research: Arqa appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Arqa in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Arqa is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amarna letters locations, Amarna letters writers, Archaeological sites in Lebanon, so understanding it makes those chapters shorter.
In everyday life: Look for Arqa outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Arqa in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Arqa means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Arqa out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Arqa in simple terms?

Why does Arqa matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Arqa?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Arqa.