How nature documentaries are made: hides, camera traps, drones and years of waiting

Tests: 5 of 12 right · Exam: 1 of 4 right · Kind: plain · Understood: 10 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 394 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. 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 ✓

«why's the show only 1 hour if they filmed for 3 years, lazy or what» What is the real reason?

1. Most film is waiting, and only the best moments make it in — ← Mova's choice · ✓ the right answer · no support
2. The crew slept for most of the three years — no support
3. They lost the rest of the film on the way home from the jungle — no support
4. Animals only move for one hour a 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 2 · wrong ✗

What would happen if a film crew walked noisily up to a family of foxes in the open?

1. The foxes would follow the crew home — ← Mova's choice · score 7
2. The foxes would stop and pose for the camera, like people do for a photo — score 1
3. The foxes would act the same as always — no support
4. The foxes would probably stop what they were doing or run away — ✓ the right answer · score 3

Why: It took the question to ask what happens next. It chose option 1 with score 7, against 3 for the next best. Its support: lesson 394, line 16: «Most nature film crews follow a rule not to change what happens; once in a while crews have helped, for example by digging a ramp for trapped penguins, and peo…», reached through what followed the sentence the question matched. What matched: the same action «follow» (+6); a different doer (counts against) (+1). The right option, 4, scored 3. · the question and its options parsed, with trees and pragmatics

Test 3 · wrong ✗

Count them: a camera films 25 pictures a second. How many pictures in 4 seconds?

1. 50 — ← Mova's choice · no support
2. 100 — ✓ the right answer · no support
3. 125 — no support
4. 29 — 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 ✗

In a cartoon, a cameraman stands in the open in a bright shirt and wild animals dance in front of him. What do real crews do?

1. Ask the animals politely to stand still — score 7
2. Film only animals that live in cages — ← Mova's choice · score 9
3. Hide or use remote cameras so animals behave naturally — ✓ the right answer · score 8
4. Wear bright clothes, because the colours attract the animals closer — score 7

Why: It took the question to ask what is done. It chose option 2 with score 9, against 8 for the next best. Its support: lesson 312, line 5: «The blue whale may be the biggest animal that has ever lived, up to about 30 metres long; its heart weighs about 180 kilograms and on a dive can beat as slowly…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «biggest animal» (+3); it fills the role the question asks for (+3); the same action «live» (+2); the same doer «biggest animal» (+1). The right option, 3, scored 8. · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

«saw a vid where a mushroom grew in 5 seconds, faked innit» What is the most likely explanation?

1. Mushrooms really can grow from nothing in five seconds after rain — score 4
2. It is time-lapse: pictures taken over days shown quickly — ✓ the right answer · no support
3. It was just a cartoon mushroom — ← Mova's choice · score 6
4. The mushroom was pulled up with a string — score 3

Why: It took the question to ask what it is done to. It chose option 3 with score 6, against 4 for the next best. Its support: lesson 210, line 7: «A pig's snout is strong and very sensitive, used for rooting up roots and grubs, and pigs have been used to find truffles, a mushroom that grows underground.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+3); a different doer (counts against) (+2); the same thing acted on «mushroom» (+1). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 6 · right ✓

On a heat camera at night, a fox and a cold rock are in the picture. What will you see?

1. The fox glowing bright and the rock dark — ← Mova's choice · ✓ the right answer · score 7
2. The rock glowing and the fox dark — no support
3. Both exactly the same grey — no support
4. Nothing, heat cameras see only in daytime — score 2

Why: It took the question to ask what it is done to. It chose option 1 with score 7, against 2 for the next best. Its support: lesson 394, line 11: «Infrared and heat cameras film at night by catching light or warmth our eyes cannot see; warm animals glow bright on heat cameras, while cold ground looks dark.», reached through the remembered sentence the question matched. What matched: the same action «glow» (+4); a different doer (counts against) (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

You want to film a hedgehog in your garden at night without disturbing it. What would work best?

1. Standing right next to it with a torch — no support
2. Shouting so that it comes out of the hedge — no support
3. A camera trap with a night camera — ← Mova's choice · ✓ the right answer · score 5
4. Picking it up to film it close — no support

Why: It took the question to ask what it is done to. It chose option 3 with score 5, the only option with support. Its support: lesson 228, line 9: «Mice prefer grains, seeds and sweet foods to cheese, so peanut butter works better in humane traps.», reached through the remembered sentence the question matched. What matched: the same action «work» (+4); the same property (+1). · the question and its options parsed, with trees and pragmatics

Test 8 · wrong ✗

«they just stood there filming while the baby elephant was stuck, cold or what» Why do crews usually not help?

1. Elephants always get out alone — score 2
2. They were too far away to see it — score 2
3. Crews are not allowed to touch anything except their cameras and tripods — ← Mova's choice · score 4
4. Their rule is not to change what happens, though people argue about it — ✓ the right answer · score -2

Why: It took the question to ask what it is done to. It chose option 3 with score 4, against 2 for the next best. Its support: lesson 394, line 1: «You watch a snow leopard creep across a cliff for three thrilling minutes. Behind those minutes there may be months of a crew sitting in freezing tents, hidden…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «crew» (+2); the same circumstance (+1); a different action (counts against) (+1). The right option, 4, scored -2. · the question and its options parsed, with trees and pragmatics

Test 9 · wrong ✗

A robot penguin waddles among real penguins and films them. Why does it work?

1. The robot speaks penguin language — no support
2. Penguins cannot see at all, so they never notice anything new around them — ← Mova's choice · score 3
3. Real penguins often ignore a robot that looks and moves a bit like them — ✓ the right answer · score -1
4. Penguins love all machines — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 3, against -1 for the next best. Its support: lesson 170, line 13: «Polar bears live only in the Arctic in the north and penguins live in the southern half of the world, so they never meet in the wild.», reached through the option's own match among the sentences about the question's things. What matched: the same action «meet» (+2); the same doer «penguins» (+1). The right option, 3, scored -1. · the question and its options parsed, with trees and pragmatics

Test 10 · right ✓

Why might a diver with a bubbling mask film fewer fish than a diver with a no-bubble machine?

1. Bubbles and noise scare many fish away — ← Mova's choice · ✓ the right answer · no support
2. Fish are drawn only to quiet divers' torches — no support
3. Bubbles make the water dark — no support
4. Bubbles hide the camera lens — 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 11 · right ✓

Count them: a crew films 300 hours and shows 1 hour. How many hours are never shown?

1. 299 — ← Mova's choice · ✓ the right answer · no support
2. 300 — no support
3. 301 — no support
4. 30 — 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 · wrong ✗

Which animals would glow brightest on a heat camera on a cold night?

1. Stones and logs that soaked up the sun — no support
2. Cold-blooded frogs and snakes — ← Mova's choice · score 9
3. Warm-blooded mammals and birds — ✓ the right answer · score 9
4. Dead leaves lying on the ground — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 9, tied with another option at 9 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 394, line 11: «Infrared and heat cameras film at night by catching light or warmth our eyes cannot see; warm animals glow bright on heat cameras, while cold ground looks dark.», reached through the option's own match among the sentences about the question's things. What matched: the same property (+4); the same action «glow» (+3); the same place «heat cameras» (+2). The right option, 3, scored 9. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · right ✓

Identify the principal reason for which wildlife film-makers conceal themselves within hides.

1. Animals which perceive human beings frequently cease their natural behaviour or take flight — ← Mova's choice · ✓ the right answer · score 2
2. Hides are required principally in order to protect the cameras and other equipment from rainfall — no support
3. Concealment permits the film-makers to capture the animals — no support
4. Animals are attracted to the scent of human beings — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 2, the only option with support. Its support: lesson 394, line 2: «Wild animals stop behaving naturally when they see or smell people, so film-makers hide. They sit in hides made of branches, leave camera traps that film by th…», reached through the same lesson line as the sentence the question matched. What matched: the same action «stop» (+3). Against it: the same doer «wild animals» (-1). · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Which of the following statements most accurately characterises the technique of time-lapse photography?

1. Pictures are taken solely in the absence of light — ← Mova's choice · no support
2. A single picture is displayed for a prolonged period — no support
3. Pictures are taken at intervals over a prolonged period and subsequently displayed in rapid succession — ✓ the right answer · no support
4. Thousands of pictures are taken each second and are subsequently displayed at a greatly reduced speed — 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 · wrong ✗

Select the response consistent with the established practice of most crews engaged in the filming of wild animals.

1. Animals are relocated to more suitable habitats prior to filming — no support
2. Animals are regularly fed in order to retain them before the camera — ← Mova's choice · score 7
3. Every animal found in difficulty is invariably rescued by the crew, irrespective of the circumstances or of the risk — score 4
4. Intervention in natural events is ordinarily avoided, although exceptional interventions remain the subject of debate — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score 7, against 4 for the next best. Its support: lesson 394, line 9: «Drones are small flying cameras that film animals from above without a helicopter; they are quieter but must be flown carefully so animals, especially nesting…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «animals» (+3); the same circumstance (+3); 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

Exam question 4 · formal language · wrong ✗

It is given that a normal film displays approximately twenty-five pictures per second. Ascertain the number of pictures displayed in a period of ten seconds.

1. Thirty-five — ← Mova's choice · no support
2. Two thousand five hundred — no support
3. Two hundred and fifty — ✓ the right answer · no support
4. Twenty-five — 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

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