MovaFatigue and load mass are different
Tests: 2 of 5 right · Exam: 1 of 3 right · Kind: ★ · Understood: 2 of 8 · Run: 2026-11-05, commit 610eccd1d
Lesson 407 of the biology 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.
Test 1 · ★ · right ✓
A tired hiker says a rucksack with unchanged contents feels heavier on the way home. Which explanation does the lesson support?
- 1. The muscles stopped needing any energy — no support
- 2. The feeling gives an exact weighing result — no support
- 3. The rucksack gained mass during the walk — no support
- 4. Tiredness makes the same load feel harder — ← Mova's choice · ✓ the right answer · score 6
Why: It took the question to ask what it is done to. It chose option 4 with score 6, the only option with support. Its support: lesson 407, line 8: «A report that a load feels heavier is different from a measurement showing that its mass increased.», reached through the remembered sentence the question matched. What matched: the same action «feel» (+5); the same doer «load» (+1).
Test 2 · ★ · wrong ✗
A schoolbag feels harder to carry at the end of a walk, but nobody has measured it again. What is known?
- 1. It must now contain water — ← Mova's choice · no support
- 2. Its mass has certainly doubled — no support
- 3. More effort; mass change unmeasured — ✓ the right answer · no support
- 4. New books must have appeared inside — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
Test 3 · ★ · wrong ✗
The same load gives the same balance reading at the same location before and after, within measurement resolution. Which statement fits?
- 1. The bag no longer has any mass — ← Mova's choice · no support
- 2. Every possible cause of fatigue has been identified — no support
- 3. No change in mass was detected by that balance — ✓ the right answer · no support
- 4. The carrier cannot be tired — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
Test 4 · ★ · wrong ✗
Two people report different effort while carrying the same bag with unchanged contents. What does this show?
- 1. The bag changes its contents for each person — no support
- 2. Effort and mass are distinct — ✓ the right answer · score 3
- 3. One person's report is a medical diagnosis — ← Mova's choice · score 7
- 4. The bag has no real mass — no support
Why: It took the question to ask who or what does it. It chose option 3 with score 7, against 3 for the next best. Its support: lesson 407, line 10: «A single report of tiredness does not identify one certain cause or establish a medical diagnosis.», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «medical diagnosis» (+4); it fills the role the question asks for (+2); the same doer «single report» (+1). The right option, 2, scored 3.
Test 5 · ★ · right ✓
Why should we avoid naming a certain illness from the tale's tiredness sentence?
- 1. More than one cause is possible — ← Mova's choice · ✓ the right answer · no support
- 2. Fictional travellers never get tired — no support
- 3. Every illness has the same cause — no support
- 4. A basket can diagnose its carrier — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
Exam question 1 · formal language · right ✓
The same checked balance at the same location measures a bag as four kilograms and later as five kilograms. What is supported?
- 1. A measured mass increase, whatever the carrier feels — ← Mova's choice · ✓ the right answer · no support
- 2. A certain medical cause of fatigue — no support
- 3. Only a change in the carrier's mood — no support
- 4. No detected change in the bag's mass — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
Exam question 2 · formal language · wrong ✗
Which account correctly connects biology with the observation of effort?
- 1. The circulatory system measures luggage mass — ← Mova's choice · no support
- 2. Muscle contraction requires no energy — no support
- 3. A tired feeling uniquely identifies an illness — no support
- 4. Muscles need energy; effort is not a weighing — ✓ the right answer · no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
Exam question 3 · formal language · wrong ✗
A bag gives one reading on a checked balance at home and a different reading on an unchecked balance elsewhere. What comparison would test for a mass change?
- 1. Decide from how tired the carrier feels — ← Mova's choice · no support
- 2. Trust whichever reading the carrier prefers — no support
- 3. Repeat with the same reliable balance and location — ✓ the right answer · no support
- 4. Treat the larger of the two readings as the true mass — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/407-fatigue-and-load-mass-are-different/