MovaHearing, seeing and what remains unknown
Tests: 4 of 5 right · Exam: 2 of 3 right · Kind: ★ · Understood: 4 of 8 · Run: 2026-11-05, commit 610eccd1d
Lesson 409 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 child hears a bell ringing in a room but cannot see the bell from the doorway. What does not seeing it allow?
- 1. The bell may be out of view or hidden — ← Mova's choice · ✓ the right answer · no support
- 2. The bell is certainly not in the room — no support
- 3. The sound came from no source at all — no support
- 4. Hearing has replaced the need for sight — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
Test 2 · ★ · right ✓
A learner hears tapping outside a closed door and says there must be exactly three visitors. What is missing?
- 1. Evidence that identifies the source and number of visitors — ← Mova's choice · ✓ the right answer · no support
- 2. A rule that every tap is silent — no support
- 3. A reason that doors have hinges — no support
- 4. A reason that ears detect sound — no support
Why: No option found support in what it remembers, so it guessed: it took the first option shown.
Test 3 · ★ · wrong ✗
A recording makes a bird call indoors. What does hearing the call alone establish about a live bird in that room?
- 1. A live bird is certainly on the table — no support
- 2. No live bird is established by the sound — ✓ the right answer · no support
- 3. A live bird is certainly behind the listener — no support
- 4. The bird's colour is certainly known — ← Mova's choice · score 1
Why: It took the question to ask what it is done to. It chose option 4 with score 1, the only option with support. Its support: lesson 409, line 7: «Hearing a sound does not by itself show the colour or exact appearance of its source.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+2); the same doer «hearing» (+1). Against it: a different action (counts against) (-2). The right option, 2, found no support in what it remembers.
Test 4 · ★ · right ✓
In the tale, what can we report without adding an unseen detail?
- 1. There are certainly four paddlers — no support
- 2. Sounds heard; no person or canoe seen — ← Mova's choice · ✓ the right answer · score 3
- 3. The canoe is certainly painted yellow — no support
- 4. The traveller has counted every passenger — no support
Why: It took the question to ask what it is done to. It chose option 2 with score 3, the only option with support. Its support: lesson 315, line 2: «About 17 kinds of bat breed in Britain. They hunt by sound, shouting clicks too high for us to hear and listening for the echoes; a bat detector turns those cl…», reached through the option's own match among the sentences about the question's things. What matched: the same action «hear» (+2); it fills the role the question asks for (+1).
Test 5 · ★ · right ✓
Why can combining sight and hearing help when investigating a sound?
- 1. Sight and hearing supply different evidence — ← Mova's choice · ✓ the right answer · score 6
- 2. Every sound must have a visible source — no support
- 3. One sense makes the other stop working — no support
- 4. The first guess becomes certain automatically — no support
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 6, the only option with support. Its support: lesson 409, line 5: «Hearing and seeing provide different kinds of sensory information.», reached through a sentence linked to the one the question matched. What matched: the same action «provide» (+5); the same doer «hearing» (+2). Against it: a different thing acted on (counts against) (-1).
Exam question 1 · formal language · right ✓
Which statement preserves the distinction between observation and inference?
- 1. Hearing paddles determines a canoe's colour — no support
- 2. A possible cause can leave unseen details open — ← Mova's choice · ✓ the right answer · score 5
- 3. A song proves that its source has been seen — no support
- 4. Not seeing a person proves nobody can be nearby — no support
Why: It took the question to ask who or what does it. It chose option 2 with score 5, the only option with support. Its support: lesson 409, line 4: «The earlier senses lessons explain the organs. Here we practise keeping their observations separate, combining evidence carefully and leaving unsupported detai…», reached through the same lesson line as the sentence the question matched. What matched: the same thing acted on «unsupported details» (+4); the same action «leave» (+2). Against it: a different doer (counts against) (-1).
Exam question 2 · formal language · wrong ✗
A sound report is compatible with both a live performer and a recording. What is justified before further evidence is obtained?
- 1. The live performer is certain — ← Mova's choice · no support
- 2. Both remain possible — ✓ the right answer · no support
- 3. The source's clothes are known — no support
- 4. The recording is certain — 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 · right ✓
Light reaches a listener's eyes while sound reaches the ears. Which description of what happens next fits the lesson?
- 1. Both signals go to the nervous system for processing — ← Mova's choice · ✓ the right answer · no support
- 2. The eyes process the sound without the brain — no support
- 3. The ears first convert the light into sound waves — no support
- 4. Each sense organ identifies the source completely by itself — 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/409-hearing-seeing-and-what-remains-unknown/