Migration and hibernation

Tests: 8 of 13 right · Exam: 3 of 4 right · Kind: ★ · Understood: 10 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 28 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 · ★ · right ✓

A storks' nest on a roof stands empty all winter and the storks return in April. What did the storks do?

1. They hibernated — no support
2. They migrated — ← Mova's choice · ✓ the right answer · score 7
3. They stored food — no support
4. They changed colour — no support

Why: It took the question to ask what is done. It chose option 2 with score 7, the only option with support. Its support: lesson 28, line 7: «Many birds, such as swallows and storks, migrate south in autumn and return in spring.», 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 action «migrate» (+2); the same doer «many birds» (+2). · the question and its options parsed, with trees and pragmatics

Test 2 · ★ · wrong ✗

A child wakes a hibernating hedgehog in January. Why is this harmful?

1. It will start to migrate south — ← Mova's choice · no support
2. The hedgehog will forget its home — no support
3. Waking uses up fat it needs for winter — ✓ the right answer · no support
4. The hedgehog will grow much too fast and too big — 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 ✓

Why does a dormouse not need to eat for months in winter?

1. Its slowed body uses little energy from its fat — ← Mova's choice · ✓ the right answer · no support
2. It eats the snow around its nest — no support
3. It catches insects in its sleep — no support
4. It has a big stomach that it filled with food in autumn — 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 · ★ · right ✓

Which animal stays active all winter?

1. A hibernating dormouse in its nest — score 8
2. A bat sleeping deeply in a dark cave — no support
3. A squirrel with a store of nuts — ← Mova's choice · ✓ the right answer · score 9
4. A swallow spending winter in Africa — no support

Why: It took the question to ask who or what does it. It chose option 3 with score 9, against 8 for the next best. Its support: lesson 28, line 4: «Others stay active and change: they grow thicker fur, store food like squirrels do, or change colour, like the Arctic hare that turns white for the snow.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+5); the same doer «squirrels» (+4). · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · right ✓

Why would a bird that eats seeds be more likely to stay for winter than one that eats flying insects?

1. Seeds can still be found in winter — ← Mova's choice · ✓ the right answer · score 2
2. Insect-eaters like warm sand — no support
3. Seeds keep birds warm inside — score 0
4. Seed-eaters cannot fly very far — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 2, against 0 for the next best. Its support: lesson 28, line 1: «Winter is hard for animals: it is cold, days are short, and food like insects, fruit and fresh leaves becomes scarce, though seeds and nuts can still be found.», reached through the option's own match among the sentences about the question's things. What matched: the same action «find» (+1); the same thing acted on «seeds» (+1). · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

Which is true about bears in winter?

1. They turn white like Arctic hares — no support
2. They eat one large meal every day and then go back to sleep — no support
3. Their body cools only a little while they sleep — ← Mova's choice · ✓ the right answer · score 8
4. They fly to warmer lands each year — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 8, the only option with support. Its support: lesson 28, line 15: «Bears sleep for months in winter, but their body cools only a little, so many scientists call it a lighter winter sleep.», reached through the same lesson line as the sentence the question matched. What matched: the same action «cool» (+4); the same doer «body» (+4). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · right ✓

Wildebeest walk hundreds of kilometres across Africa each year following the rains. Why?

1. To find fresh grass and water — ← Mova's choice · ✓ the right answer · no support
2. To find a cave to hibernate in — no support
3. To change the colour of their fur — no support
4. To escape the cold winter snow — 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 · ★ · right ✓

A bat hangs very still in a cold cave all winter, with a slow heartbeat. What is it doing?

1. Hunting for moths — no support
2. Hibernating — ← Mova's choice · ✓ the right answer · score 14
3. Migrating south — no support
4. Building a nest — no support

Why: It took the question to ask what is done. It chose option 2 with score 14, the only option with support. Its support: lesson 28, line 12: «Hedgehogs, dormice, many bats and ground squirrels hibernate.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+6); the same action «hibernate» (+4); the same doer «hedgehogs» (+4). · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · wrong ✗

Why do many migrating birds come back north in spring?

1. The south becomes covered in snow — ← Mova's choice · no support
2. They are blown back by winter winds — no support
3. They need to hibernate in the north — no support
4. There is plenty of food for raising young — ✓ 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 10 · ★ · wrong ✗

why do swallows fly south in autumn

1. Because the wind blows them there — ← Mova's choice · no support
2. To find food and warmth for the winter — ✓ the right answer · no support
3. To get away from the long days — no support
4. To lay their eggs in the snow — 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 · ★ · wrong ✗

what's hibernating mean

1. Flying south for the winter — ← Mova's choice · no support
2. Changing colour in the snow — no support
3. A long deep winter sleep with the body cooling down — ✓ the right answer · no support
4. Storing lots of food in a burrow to eat in the winter — 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 ✗

Tom says bears hibernate just like hedgehogs. true?

1. No, bears stay awake all winter — ← Mova's choice · score 1
2. Yes, bears cool down just as much — no support
3. Yes, bears are the deepest sleepers of all, much deeper than hedgehogs — no support
4. No, a bear's body cools only a little; it's a lighter winter sleep — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 1 with score 1, the only option with support. Its support: lesson 28, line 15: «Bears sleep for months in winter, but their body cools only a little, so many scientists call it a lighter winter sleep.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «bears» (+1); the same property (+1). 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 13 · ★ · right ✓

Mia reckons hibernating animals wake up to eat every day. right?

1. Yes, they wake up for breakfast each morning — no support
2. No, they don't need any food or fat at all — score 3
3. Yes, they eat a meal every day — score 6
4. No, they live on the fat they stored before — ← Mova's choice · ✓ the right answer · score 7

Why: It took the question to ask which statement is true. It chose option 4 with score 7, against 6 for the next best. Its support: lesson 28, line 13: «Before hibernating, animals eat a lot to store fat, which keeps them alive through the winter.», reached through a sentence linked to the one the question matched. What matched: the same action «store» (+3); the same doer «animals» (+2); the same thing acted on «fat» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following is designated by the term migration?

1. A change of colour to match the season — ← Mova's choice · no support
2. A long journey undertaken in search of food, warmth or a place to rear young — ✓ the right answer · no support
3. The storage of food against the winter — no support
4. A deep winter sleep with lowered body temperature — 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 2 · formal language · right ✓

Identify, from among the following, a bird celebrated for one of the longest annual migrations.

1. The Arctic tern — ← Mova's choice · ✓ the right answer · score 2
2. The house sparrow — no support
3. The ostrich — no support
4. The penguin — 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 28, line 9: «The Arctic tern makes one of the longest migrations, flying from the Arctic to the Antarctic and back every year.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «arctic tern» (+1); the same property (+1). · 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 preparation of animals for hibernation.

1. They cease eating entirely in the autumn — no support
2. They grow additional feathers — no support
3. They consume much food and store it as fat — ← Mova's choice · ✓ the right answer · score 4
4. They migrate to warmer lands — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 4, the only option with support. Its support: lesson 28, line 13: «Before hibernating, animals eat a lot to store fat, which keeps them alive through the winter.», reached through the same lesson line as the sentence the question matched. What matched: the same action «store» (+4); the same circumstance (+2). Against it: a different doer (counts against) (-1); a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Identify the principal reason for which frogs become slow and inactive in winter.

1. They are unable to maintain their own bodily warmth — ← Mova's choice · ✓ the right answer · score 1
2. They are migrating beneath the ice — no support
3. They are protecting their eggs — score 1
4. They have consumed excessive food — no support

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 28, line 16: «Frogs and many reptiles become very slow and still in winter because they cannot keep themselves warm.», reached through a sentence linked to the one the question matched. What matched: the same action «keep» (+3); the same doer «frogs» (+2). Against it: a different thing acted on (counts against) (-1); one says «not», the other does not (counts against) (-3). · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/28-migration-and-hibernation/