Natural resources and why we must save them
Tests: 5 of 13 right · Exam: 3 of 4 right · Kind: ★ · Understood: 8 of 17 · Run: 2026-10-18, commit f3c23ea72
Lesson 47 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 town gets all its electricity from a wind farm and solar panels. Why can it go on doing so for ever?
- 1. Wind turbines turn even without wind — ← Mova's choice · score 4
- 2. The panels make new sunlight every day — score 4
- 3. The town has a huge store of coal hidden deep underground — no support
- 4. Wind and sunlight are renewable and are not used up — ✓ the right answer · no support
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 47, line 16: «Solar panels make electricity from sunlight and wind turbines make it from the wind.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «turbines» (+3); the same circumstance (+2). Against it: a different action (counts against) (-1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 2 · ★ · wrong ✗
Jack says: When the coal mines are empty, we will just wait for new coal to form. What is wrong with his idea?
- 1. Nothing is wrong with his idea — ← Mova's choice · no support
- 2. Coal takes millions of years to form — ✓ the right answer · no support
- 3. Coal is made in factories, not in mines — no support
- 4. Coal forms again in about one year — 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 ✓
Which is the best way to keep the fish in a lake for the future?
- 1. Catch fewer fish than are born each year — ← Mova's choice · ✓ the right answer · no support
- 2. Catch as many fish as possible now while they are there — no support
- 3. Never feed the fish anything — no support
- 4. Pour fresh water into the lake — 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 4 · ★ · wrong ✗
A family sorts its rubbish into paper, glass, metal and plastic. What does this help to do?
- 1. Turn the plastic into fresh drinking water — no support
- 2. Make more rubbish to sort next week — ← Mova's choice · score 10
- 3. Recycle materials into new things — ✓ the right answer · no support
- 4. Burn the rubbish faster in the garden — no support
Why: It took the question to ask what is done. It chose option 2 with score 10, the only option with support. Its support: lesson 47, line 5: «So we save resources: we turn off lights and taps, sort rubbish so that paper, glass, metal and plastic can be recycled, use things again, and get energy from…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same action «sort» (+4). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 5 · ★ · right ✓
Which of these resources would run out if people used it for a very long time?
- 1. Wind — no support
- 2. Sunlight — no support
- 3. Natural gas — ← Mova's choice · ✓ the right answer · score 7
- 4. Ocean tides — no support
Why: It took the question to ask what it is done to. It chose option 3 with score 7, the only option with support. Its support: lesson 47, line 6: «Natural resources are materials and energy that people take from nature.», reached through the remembered sentence the question matched. What matched: the same circumstance (+6); the same property (+2). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics
Test 6 · ★ · right ✓
Why does burning less coal and oil help the whole planet, not only one city?
- 1. It makes the oceans less salty — no support
- 2. It adds less carbon dioxide, which warms the whole climate — ← Mova's choice · ✓ the right answer · score 7
- 3. It makes the plates of the Earth move slower — no support
- 4. It makes the Sun shine more brightly — no support
Why: It took the question to ask why something happens (its cause). It chose option 2 with score 7, the only option with support. Its support: lesson 47, line 12: «Burning fossil fuels pollutes the air and adds carbon dioxide, which warms the Earth's climate.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «carbon dioxide» (+3); the same action «warm» (+2); the same thing acted on «climate» (+2). · the question and its options parsed, with trees and pragmatics
Test 7 · ★ · wrong ✗
Which is an example of reusing?
- 1. Buying a new jar every day — ← Mova's choice · no support
- 2. Throwing the jar in the rubbish — no support
- 3. Filling an old jar with buttons — ✓ the right answer · no support
- 4. Melting the jar to make a new bottle — 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 is a tap left running a waste of a precious resource?
- 1. The water turns into gas in the sink — ← Mova's choice · no support
- 2. Running water makes the pipes grow — no support
- 3. Fresh drinkable water is only a tiny part of all water — ✓ the right answer · no support
- 4. Water from taps comes straight from the ocean and never ends — 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 9 · ★ · right ✓
Which pair is correct?
- 1. Australia and iron ore — ← Mova's choice · ✓ the right answer · no support
- 2. Antarctica and wheat fields — no support
- 3. The Pacific Ocean and coal mines — no support
- 4. The Sahara and great forests — 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 10 · ★ · wrong ✗
why cant we just make more oil when it runs out
- 1. Oil is made in factories very slowly — ← Mova's choice · score 6
- 2. Oil only forms in winter — no support
- 3. It can be grown on farms — no support
- 4. It took millions of years to form from ancient life — ✓ the right answer · no support
Why: It took the question to ask which statement is true. It chose option 1 with score 6, the only option with support. Its support: lesson 47, line 3: «Others do not renew in a human lifetime: coal, oil and gas formed from plants and tiny sea creatures buried for millions of years, so once we burn them they ar…», reached through the remembered sentence the question matched. What matched: the same action «form» (+4); the same thing acted on «oil» (+2). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 11 · ★ · wrong ✗
whats the point of recycling a can tbh
- 1. It makes the can heavier for later — ← Mova's choice · no support
- 2. Cans disappear on their own anyway — no support
- 3. It only makes the bin lighter — no support
- 4. The metal is made into new things instead of digging up more — ✓ 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 12 · ★ · right ✓
my uncle says there's loads of water so we can waste it. true?
- 1. Yes, fresh water never runs out — no support
- 2. Yes, the sea can be drunk as it is — no support
- 3. No, there is no fresh water left at all — no support
- 4. No, only a tiny part of Earth's water is fresh water we can drink — ← Mova's choice · ✓ the right answer · score 6
Why: It took the question to ask which statement is true. It chose option 4 with score 6, the only option with support. Its support: lesson 47, line 15: «Only a tiny part of all the water on Earth is fresh water that people can drink.», reached through the remembered sentence the question matched. What matched: the same action «drink» (+4); the same thing acted on «fresh water» (+2). · the question and its options parsed, with trees and pragmatics
Test 13 · ★ · wrong ✗
a video said wind and sunlight will run out soon. right?
- 1. Yes, sunlight is a fossil fuel — ← Mova's choice · no support
- 2. No, but only wind is renewable — no support
- 3. Yes, they will run out like coal in a few years — no support
- 4. No, they are renewable and are not used up — ✓ 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 1 · formal language · right ✓
Which of the following statements most accurately characterises renewable resources?
- 1. They are formed over millions of years beneath the ground, as coal — no support
- 2. They may be used once only, as natural gas — score 1
- 3. They are not exhausted by use, as sunlight and wind — ← Mova's choice · ✓ the right answer · score 6
- 4. They are obtained solely by mining — no support
Why: It took the question to ask who or what does it. It chose option 3 with score 6, against 1 for the next best. Its support: lesson 47, line 7: «Renewable resources, such as sunlight, wind and flowing water, are not used up.», reached through the remembered sentence the question matched. What matched: the same action «use up» (+4); the same thing acted on «renewable resources» (+2). · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · wrong ✗
Identify, from among the following, a fossil fuel.
- 1. Sunlight — ← Mova's choice · no support
- 2. Wind — no support
- 3. Flowing water — no support
- 4. Oil — ✓ 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 3 · formal language · right ✓
Select the response that is consistent with the established facts concerning the burning of fossil fuels.
- 1. It pollutes the air and adds carbon dioxide that warms the climate — ← Mova's choice · ✓ the right answer · score 1
- 2. It produces no gases whatsoever — no support
- 3. It renews the supply of fossil fuels — no support
- 4. It removes carbon dioxide from the air — score 1
Why: It took the question to ask which statement is true. It chose option 1 with score 1, tied with another option at 1 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 47, line 12: «Burning fossil fuels pollutes the air and adds carbon dioxide, which warms the Earth's climate.», reached through the option's own match among the sentences about the question's things. What matched: the same action «pollute» (+1); the same thing acted on «air» (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics
Exam question 4 · formal language · right ✓
State the proportion of the Earth's water that is fresh water fit for drinking.
- 1. Only a very small part — ← Mova's choice · ✓ the right answer · no support
- 2. The entirety — no support
- 3. The greater part — no support
- 4. Approximately one half — 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/47-natural-resources/