The water cycle
Tests: 5 of 13 right · Exam: 4 of 4 right · Kind: ★ · Understood: 9 of 17 · Run: 2026-10-18, commit f3c23ea72
Lesson 14 of the world 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 · ★ · wrong ✗
A raindrop falls into a river. What could happen to it next?
- 1. It stays in that river for ever — ← Mova's choice · no support
- 2. It flows to the sea, evaporates and falls as rain again — ✓ the right answer · no support
- 3. It slowly turns into salt — no support
- 4. It vanishes, and brand new water is made somewhere else instead — 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 2 · ★ · wrong ✗
Which part of the water cycle happens on a cold window when you breathe on it?
- 1. Precipitation — ← Mova's choice · no support
- 2. Transpiration — no support
- 3. Evaporation — no support
- 4. Condensation — ✓ 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
Test 3 · ★ · right ✓
If the Sun stopped warming the Earth, what would happen to the water cycle?
- 1. It would stop, because water would hardly evaporate — ← Mova's choice · ✓ the right answer · score 8
- 2. Clouds would form even faster than before, and rain more — no support
- 3. Rain would fall more often — no support
- 4. Nothing, because the Moon drives it — no support
Why: It took the question to ask what happens next. It chose option 1 with score 8, the only option with support. Its support: lesson 14, line 2: «The Sun warms seas, lakes, rivers and soil, and water evaporates into the air as invisible vapour; plants also give off water vapour from their leaves.», reached through what followed the sentence the question matched. What matched: the same action «evaporate» (+4); the same doer «water» (+4). · the question and its options parsed, with trees and pragmatics
Test 4 · ★ · right ✓
Which is true about rain?
- 1. It comes only from rivers and lakes — no support
- 2. It is fresh water, even when it came from the sea — ← Mova's choice · ✓ the right answer · score 10
- 3. It is made brand new inside clouds — no support
- 4. It is salty, because it all came from the sea in the first place — no support
Why: It took the question to ask which statement is true. It chose option 2 with score 10, the only option with support. Its support: lesson 14, line 14: «When seawater evaporates the salt stays behind, so rain is fresh water.», reached through the remembered sentence the question matched. What matched: the same doer «rain» (+4); the same thing acted on «fresh water» (+4); the same light verb (be, have, do, get, go) (+2). · the question and its options parsed, with trees and pragmatics
Test 5 · ★ · wrong ✗
A large forest is cut down. How might this change the water cycle there?
- 1. The rivers there start to flow uphill — ← Mova's choice · no support
- 2. The rain that falls there becomes salty — no support
- 3. Less water vapour goes into the air from leaves — ✓ the right answer · no support
- 4. More water vapour starts coming out of the cut stumps — 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 6 · ★ · wrong ✗
You tie a clear plastic bag over a leafy branch on a sunny day. Later there are drops of water inside. Why?
- 1. The plastic made the water itself — ← Mova's choice · score 3
- 2. The leaves gave off vapour that condensed on the bag — ✓ the right answer · no support
- 3. Dew from the morning soaked through the bag — no support
- 4. Rain got in through the plastic — no support
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 3, the only option with support. Its support: lesson 13, line 5: «The white cloud just above a boiling kettle is not the gas itself: it is tiny drops of water that formed when the invisible vapour cooled in the air.», reached through the same lesson line as the sentence the question matched. What matched: the same action «form» (+2); the same thing acted on «water» (+2). Against it: a different doer (counts against) (-1). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 7 · ★ · right ✓
Which word names hail falling from a storm cloud?
- 1. Precipitation — ← Mova's choice · ✓ the right answer · no support
- 2. Condensation — no support
- 3. Evaporation — no support
- 4. Transpiration — 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 ✗
Why could the water you drink today have been in a cloud long ago?
- 1. Earth's water goes round and round the cycle — ✓ the right answer · no support
- 2. Tap water is made new in a factory — ← Mova's choice · score 9
- 3. Clouds are made of new water each day — score 7
- 4. Water only lasts for one day — no support
Why: It took the question to ask why something happens (its cause). It chose option 2 with score 9, against 7 for the next best. Its support: lesson 13, line 5: «The white cloud just above a boiling kettle is not the gas itself: it is tiny drops of water that formed when the invisible vapour cooled in the air.», reached through the option's own match among the sentences about the question's things. What matched: the same action «form» (+4); the same doer «water» (+3); the same thing acted on «water» (+2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 9 · ★ · wrong ✗
Snow on a mountain melts in spring. Where does the water go?
- 1. Straight up into outer space — no support
- 2. Into streams and rivers, and on towards the sea — ✓ the right answer · no support
- 3. Into the rock, where it stays for ever — ← Mova's choice · score 3
- 4. It turns straight back into snow — no support
Why: It took the question to ask where. It chose option 3 with score 3, the only option with support. Its support: lesson 12, line 13: «Lava from a volcano is rock so hot that it has melted into a liquid; when it cools it freezes back into solid rock.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+3); the same place «solid rock» (+2). Against it: a different action (counts against) (-1); a different doer (counts against) (-1). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 10 · ★ · wrong ✗
where does rain even come from
- 1. Water that falls off the Moon — ← Mova's choice · no support
- 2. Water that evaporated, rose and condensed into clouds — ✓ the right answer · no support
- 3. Water that clouds pull up from deep underground — no support
- 4. New water the sky makes every day — 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 ✓
how come rain isn't salty if it comes from the sea
- 1. The clouds filter the salt out — no support
- 2. The rain is salty, we just can't taste it — no support
- 3. The wind blows the salt away — no support
- 4. The salt stays behind when seawater evaporates — ← Mova's choice · ✓ the right answer · score 5
Why: It took the question to ask which statement is true. It chose option 4 with score 5, the only option with support. Its support: lesson 14, line 14: «When seawater evaporates the salt stays behind, so rain is fresh water.», reached through a sentence linked to the one the question matched. What matched: the same action «stay» (+2); the same doer «salt» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics
Test 12 · ★ · wrong ✗
my brother says we'll run out of water one day cos it all gets used up. true?
- 1. No, the Earth makes new water every day — ← Mova's choice · score 6
- 2. Yes, every glass we drink is gone for ever — no support
- 3. No, the water on Earth keeps moving round and stays about the same — ✓ the right answer · score 4
- 4. Yes, the Sun burns some water away every year — no support
Why: It took the question to ask which statement is true. It chose option 1 with score 6, against 4 for the next best. Its support: lesson 13, line 5: «The white cloud just above a boiling kettle is not the gas itself: it is tiny drops of water that formed when the invisible vapour cooled in the air.», reached through the remembered sentence the question matched. What matched: the same action «form» (+4); the same thing acted on «water» (+4). Against it: a different doer (counts against) (-2). The right option, 3, scored 4. · the question and its options parsed, with trees and pragmatics
Test 13 · ★ · right ✓
Mia says most of Earth's water is fresh water from rivers. right?
- 1. No, most is salty seawater in the oceans — ← Mova's choice · ✓ the right answer · no support
- 2. Yes, and the oceans are just a small part — no support
- 3. No, most is frozen in the clouds — no support
- 4. Yes, rivers hold most of the water — 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 1 · formal language · right ✓
Identify the principal source of energy by which the water cycle is driven.
- 1. The gravitational pull of the Moon — no support
- 2. The heat of the Sun — ← Mova's choice · ✓ the right answer · score 4
- 3. The force of the wind alone — no support
- 4. The heat of the Earth's interior — no support
Why: It took the question to ask which statement is true. It chose option 2 with score 4, the only option with support. Its support: lesson 14, line 7: «The heat of the Sun drives the water cycle.», reached through the same lesson line as the sentence the question matched. What matched: the same action «heat» (+2); the same doer «sun» (+2). · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · right ✓
Which of the following is designated by the term transpiration?
- 1. The emission of water vapour from the leaves of plants — ← Mova's choice · ✓ the right answer · no support
- 2. The descent of rain upon the land — no support
- 3. The absorption of rainwater into the ground — no support
- 4. The freezing of water within glaciers — 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 3 · formal language · right ✓
Identify the principal reason for which rain is fresh water even when derived from the sea.
- 1. The clouds filter out the salt as they form — no support
- 2. The salt is consumed entirely by the Sun's heat — no support
- 3. The salt remains behind upon evaporation — ← Mova's choice · ✓ the right answer · score 5
- 4. The wind removes the salt from the falling rain — no support
Why: It took the question to ask which statement is true. It chose option 3 with score 5, the only option with support. Its support: lesson 14, line 14: «When seawater evaporates the salt stays behind, so rain is fresh water.», reached through a sentence linked to the one the question matched. What matched: the same action «stay» (+2); the same doer «salt» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics
Exam question 4 · formal language · right ✓
Select the response that is consistent with the established facts concerning the total quantity of water upon the Earth.
- 1. It remains approximately constant — ← Mova's choice · ✓ the right answer · no support
- 2. It diminishes by a small amount each year — no support
- 3. It increases by a small amount each year — no support
- 4. It is entirely renewed upon an annual basis — 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
This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/14-the-water-cycle/