The great rivers
Tests: 7 of 11 right · Exam: 1 of 4 right · Kind: plain · Understood: 7 of 15 · Run: 2026-10-18, commit f3c23ea72
Lesson 16 of the geography course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.
Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.
Test 1 · right ✓
Max says: «The Amazon is definitely longer than the Nile, my teacher said.» What is the best answer?
- 1. Max is right, it is proven beyond doubt — no support
- 2. It is still argued: the Nile is usually named first, but some measurements make the Amazon longer — ← Mova's choice · ✓ the right answer · score 12
- 3. The Nile is twice as long as the Amazon — no support
- 4. Both rivers are the same length — no support
Why: It took the question to ask what it is done to. It chose option 2 with score 12, the only option with support. Its support: lesson 16, line 6: «The Nile, about 6,650 km, is usually called the world's longest river, but some measurements make the Amazon, about 6,400 km or more, a little longer.», reached through the remembered sentence the question matched. What matched: the same action «call» (+4); it fills the role the question asks for (+4); the same thing acted on «nile» (+2); the same property (+2). · the question and its options parsed, with trees and pragmatics
Test 2 · right ✓
«ancient egyptians were happy about the flood?? sounds awful» Which is the best answer?
- 1. The flood left rich silt on the fields, so crops grew well — ← Mova's choice · ✓ the right answer · no support
- 2. It washed the sand away and turned the deserts into forests — no support
- 3. They liked swimming in it — no support
- 4. It brought gold from the mountains — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 3 · right ✓
«why does the volga never get to the ocean, is it lazy lol» What is right?
- 1. It flows into the Caspian Sea, a lake with no outlet to the ocean — ← Mova's choice · ✓ the right answer · score 9
- 2. It flows uphill into the Arctic — score 4
- 3. It dries up before it gets there — no support
- 4. It goes underground and comes out again in the Black Sea, near Crimea — score 2
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 9, against 4 for the next best. Its support: lesson 16, line 12: «The Volga, about 3,500 km long, is the longest river in Europe, and it flows into the Caspian Sea, not into an ocean.», reached through the option's own match among the sentences about the question's things. What matched: the same action «flow» (+3); the same circumstance (+3); the same place «caspian sea» (+2); the same doer «volga» (+1). · the question and its options parsed, with trees and pragmatics
Test 4 · right ✓
In Europa Universalis 5, a river is mostly a line that slows armies. What does the game leave out?
- 1. Nothing, rivers do nothing else — no support
- 2. Rivers in real life cannot be crossed at all — score 3
- 3. Rivers are only found in deserts — no support
- 4. Rivers also give water, rich farmland, fish, power and routes for boats — ← Mova's choice · ✓ the right answer · score 7
Why: It took the question to ask what it is done to. It chose option 4 with score 7, against 3 for the next best. Its support: lesson 16, line 4: «The game makes rivers mostly lines that slow armies down, but real rivers also bring water, rich silt for farms, fish, power and roads for boats.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «real rivers» (+3); it fills the role the question asks for (+3); the same thing acted on «water» (+2). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics
Test 5 · wrong ✗
What would happen if a big river kept building up silt in its bed?
- 1. The river would get deeper and calmer — ← Mova's choice · score 3
- 2. The river would turn into a lake at once — score 3
- 3. The river would rise higher and flood or change course more easily — ✓ the right answer · score 3
- 4. Nothing at all would change, because the silt would always wash out to sea — score 2
Why: It took the question to ask what happens next. It chose option 1 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 16, line 17: «The Congo River is the deepest river in the world, more than 220 metres deep in places, and it carries the second most water of any river.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «congo river» (+2); the same property (+1). The right option, 3, scored 3. · the question and its options parsed, with trees and pragmatics
Test 6 · right ✓
«danube's in like 3 countries max» What is right?
- 1. It flows through or along the borders of 10 countries — ← Mova's choice · ✓ the right answer · no support
- 2. It flows in 50 countries — no support
- 3. It is only in Austria — no support
- 4. It is only in Germany and Austria — no support
Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 7 · right ✓
Why would a port at the mouth of a big river become very busy?
- 1. Goods from the whole river can be moved onto sea ships there — ← Mova's choice · ✓ the right answer · no support
- 2. Rivers are saltier at the mouth — no support
- 3. Fish only live at river mouths, so all the fishing boats gather there — no support
- 4. Ships cannot sail on the sea — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 8 · wrong ✗
«bloody hell, the congo's 220 metres deep?? thats deeper than a skyscraper is tall» Is the depth right?
- 1. No, it is only 2 metres deep — ← Mova's choice · no support
- 2. Yes, it is more than 220 metres deep in places, the deepest river — ✓ the right answer · no support
- 3. No, no river is more than 10 metres deep — no support
- 4. No, it is 22 km deep — no support
Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 9 · wrong ✗
Why does a river through a rainforest carry so much water?
- 1. Snow melts in the rainforest every day — no support
- 2. The sea flows backwards into it — ← Mova's choice · score 4
- 3. Rainforests get heavy rain nearly all year — ✓ the right answer · no support
- 4. Rainforest trees make new water out of the soil — no support
Why: It took the question to ask why something happens (its cause). It chose option 2 with score 4, the only option with support. Its support: lesson 16, line 7: «The Amazon flows through rainforest, where heavy rain falls nearly all year, and carries about a fifth of all the river water that flows into the world's ocean…», reached through the option's own match among the sentences about the question's things. What matched: the same action «flow» (+3); the same place «rainforest» (+2). Against it: a different doer (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 10 · wrong ✗
«the ganges delta, thats in india right» What is right?
- 1. It is all in Nepal, high up near Mount Everest — ← Mova's choice · no support
- 2. Most of the delta is in Bangladesh, with part in India — ✓ the right answer · no support
- 3. All of it is in Pakistan — no support
- 4. It is in China — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Test 11 · right ✓
Why did the Aswan High Dam help and harm Egypt at the same time?
- 1. It brought floods every week but no water — score 3
- 2. It gave the fields more silt but took away all the river's water — score 4
- 3. It gave steady water and power but held back the rich silt — ← Mova's choice · ✓ the right answer · score 6
- 4. It made the Nile flow backwards — no support
Why: It took the question to ask why something happens (its cause). It chose option 3 with score 6, against 4 for the next best. Its support: lesson 16, line 9: «The Aswan High Dam, finished in 1970, stopped the Nile's yearly flood, giving steady water and electricity but holding back the silt.», reached through a sentence linked to the one the question matched. What matched: the same action «give» (+2); the same doer «aswan high dam» (+2); the same thing acted on «steady water» (+2). · the question and its options parsed, with trees and pragmatics
Exam question 1 · formal language · wrong ✗
Which of the following statements most accurately characterises the relative lengths of the Nile and the Amazon?
- 1. The Nile is shorter than the Thames — ← Mova's choice · no support
- 2. The Nile is conventionally designated the longest, whereas certain measurements accord greater length to the Amazon — ✓ the right answer · no support
- 3. The two rivers are of precisely identical length — no support
- 4. The Amazon is universally acknowledged to be twice the length of the Nile — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · wrong ✗
Identify the body of water into which the River Volga discharges.
- 1. The Black Sea — ← Mova's choice · no support
- 2. The Arctic Ocean — no support
- 3. The Caspian Sea — ✓ the right answer · no support
- 4. The Baltic Sea — no support
Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 3 · formal language · wrong ✗
State the number of states through or along whose borders the River Danube flows.
- 1. Two only — ← Mova's choice · no support
- 2. Four — no support
- 3. Twenty — no support
- 4. Ten — ✓ the right answer · no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics
Exam question 4 · formal language · right ✓
Ascertain the principal consequence of the completion of the Aswan High Dam in the year 1970.
- 1. The Blue Nile ceased to contribute water to the Nile — score 3
- 2. The annual inundation of the Nile was terminated, affording regular water and electricity whilst retaining the silt — ← Mova's choice · ✓ the right answer · score 4
- 3. The annual inundation of the Nile was rendered more severe — no support
- 4. The Nile was diverted into the Red Sea — no support
Why: It took the question to ask which statement is true. It chose option 2 with score 4, against 3 for the next best. Its support: lesson 16, line 9: «The Aswan High Dam, finished in 1970, stopped the Nile's yearly flood, giving steady water and electricity but holding back the silt.», reached through the same lesson line as the sentence the question matched. What matched: the same action «give» (+2); the same thing acted on «steady water» (+2). · the question and its options parsed, with trees and pragmatics
This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/geography/16-the-great-rivers/