Seat belts, crashes and keeping safe

Tests: 4 of 11 right · Exam: 2 of 4 right · Kind: ★ · Understood: 9 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 37 of the physics 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 ✗

nah i don't need a belt, i'll just hold onto the seat if we crash. right?

1. No, you should hold the door handle instead — ← Mova's choice · no support
2. Yes, holding on is just as safe — no support
3. No, in a crash your body keeps going far harder than your arms can hold — ✓ the right answer · no support
4. Yes, if you hold tightly with both hands — 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 · ★ · right ✓

A pet dog is loose on the back seat. What could happen in a crash?

1. It would keep moving forward and fly through the car — ← Mova's choice · ✓ the right answer · score 1
2. It would stay still on the seat, because it is so light — no support
3. It would be pushed into the back window — no support
4. Nothing, dogs always land on their feet — 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 37, line 1: «In a crash the car stops in a moment, but everything inside it, you, your bag and the dog, keeps moving forward at the speed the car had.», reached through the same lesson line as the sentence the question matched. What matched: the same action «move forward» (+1); the same property (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · wrong ✗

In a cartoon, a car smashes into a wall and the front stays perfect while the people are thrown about. What's wrong?

1. Cars never crumple in crashes — score 4
2. The wall should be the thing that crumples, not the car — ← Mova's choice · score 6
3. People in cars never move in a crash — no support
4. Real cars crumple at the front to protect the people — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score 6, against 4 for the next best. Its support: lesson 36, line 5: «A fast car carries much more energy than a slow one, so it needs a much longer way to stop, and that is why the speed limit outside a school is low.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «way» (+4); the same doer «car» (+3). 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 4 · ★ · right ✓

Max is seven and small. Dad says he can use the adult belt without a booster. What's the problem?

1. Boosters only matter on long journeys — no support
2. The belt would cross his neck and tummy instead of shoulder and hips — ← Mova's choice · ✓ the right answer · score 6
3. Small children slip under the airbag — no support
4. Adult belts are too short for children — no support

Why: It took the question to ask what it is done to. It chose option 2 with score 6, the only option with support. Its support: lesson 37, line 9: «Younger children use booster seats so the adult belt crosses their shoulder and hips instead of their neck and tummy.», reached through a sentence linked to the one the question matched. What matched: the same action «cross» (+3); the same doer «adult belt» (+2); the same circumstance (+2). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · right ✓

mate says cars can stop dead the second the driver hits the brakes. true?

1. Yes, but only on dry roads with good brand-new tyres — no support
2. Yes, if the driver presses the pedal really hard — no support
3. Yes, modern brakes work instantly the moment they are pressed — score 7
4. No, a car always needs time and distance to stop — ← Mova's choice · ✓ the right answer · score 9

Why: It took the question to ask which statement is true. It chose option 4 with score 9, against 7 for the next best. Its support: lesson 36, line 5: «A fast car carries much more energy than a slow one, so it needs a much longer way to stop, and that is why the speed limit outside a school is low.», reached through the option's own match among the sentences about the question's things. What matched: the same action «need» (+4); the same doer «car» (+3); its «because» matches the remembered cause (+2). · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · wrong ✗

You are on your bike next to a big lorry at the lights and cannot see the driver in his mirror. What's true?

1. He can always see cyclists — ← Mova's choice · score 11
2. It does not matter at the lights — no support
3. The driver cannot see you, so move where he can — ✓ the right answer · score 7
4. He can always see you through the window in the side door — score 7

Why: It took the question to ask which statement is true. It chose option 1 with score 11, against 7 for the next best. Its support: lesson 37, line 13: «A cyclist's helmet softens a knock to the head, and bright clothes and lights help drivers see the cyclist.», reached through the option's own match among the sentences about the question's things. What matched: the same action «see» (+4); the same thing acted on «cyclist» (+4); the same doer «drivers» (+3). The right option, 3, scored 7. · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

Why are the strong bones of the hips and shoulder the best place for a belt to press?

1. They are the lightest parts of the body, so they move less — ← Mova's choice · no support
2. They are the softest and most cushioned parts of the body — no support
3. They can take the force without serious harm — ✓ the right answer · no support
4. They are the parts that sit closest to the car floor — 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 does an airbag make a crash safer than hitting the steering wheel?

1. It slows the head over a longer, softer stop — ✓ the right answer · score 6
2. It pushes the other car away before you hit it — no support
3. It bounces you straight back into your seat again — no support
4. It makes the whole car stop instantly where it is — ← Mova's choice · score 8

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 8, against 6 for the next best. Its support: lesson 37, line 3: «Cars are built to soften the stop: the front crumples slowly, an airbag puffs out in a split second, and a longer, softer stop means a smaller force on the peo…», reached through the same lesson line as the sentence the question matched. What matched: the same action «build» (+5); the same thing acted on «cars» (+3). The right option, 1, scored 6. · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · wrong ✗

A heavy suitcase sits on the back seat next to your sister. What should Dad do?

1. Put it on her lap — no support
2. Leave it, it's heavy so it won't move — ← Mova's choice · score 4
3. Put it in the boot — ✓ the right answer · no support
4. Tie it to the headrest with a ribbon — no support

Why: It took the question to ask what is done. It chose option 2 with score 4, the only option with support. Its support: lesson 7, line 7: «Wheels roll instead of rub, so a suitcase on wheels moves easily, and before wheels people rolled huge stones on logs.», reached through the option's own match among the sentences about the question's things. What matched: it fills the role the question asks for (+3); the same action «move» (+2); the same doer «suitcase» (+2). Against it: one says «not», the other does not (counts against) (-3). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

Why should you never cross a railway when the barriers are down, even if the train looks far away?

1. Trains always stop for people — score 5
2. Trains are fast and need a very long way to stop — ← Mova's choice · ✓ the right answer · score 7
3. The barriers are only for cars, so walkers can go round them — no support
4. Trains can steer round people — score 1

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 7, against 5 for the next best. Its support: lesson 37, line 16: «A fast train can need over a kilometre to stop, because it is very heavy and steel wheels on steel rails have little grip; that is why level crossings have bar…», reached through the option's own match among the sentences about the question's things. What matched: the same action «need» (+3); the same doer «fast train» (+2); its «because» matches the remembered cause (+2). · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · wrong ✗

Lily cycles home at dusk in a dark coat with no lights. What's the biggest problem?

1. She will get cold — ← Mova's choice · no support
2. The helmet will not work in the dark — no support
3. Drivers may not see her — ✓ the right answer · no support
4. Her bike will go slower — 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 ✓

Identify the principal function of the crumple zone of a motor vehicle.

1. To prolong the duration of the collision and so reduce the force upon the occupants — ← Mova's choice · ✓ the right answer · no support
2. To render the vehicle lighter subsequent to a collision — no support
3. To protect the engine at the expense of the occupants — no support
4. To arrest the vehicle instantaneously upon impact — 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

Exam question 2 · formal language · wrong ✗

Ascertain the reason for which a child of small stature is required to employ a booster seat.

1. So that the child's weight is increased for safety — ← Mova's choice · no support
2. So that the child is positioned nearer to the airbag — no support
3. So that the child may observe the road more readily — no support
4. So that the belt passes across the shoulder and hips rather than the neck and abdomen — ✓ 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 · wrong ✗

Which of the following statements most accurately characterises the behaviour of unsecured objects within a vehicle at the moment of collision?

1. They remain at rest in their original positions — ← Mova's choice · no support
2. They are propelled towards the rear of the vehicle by the impact — no support
3. They continue to move forward at the former speed of the vehicle — ✓ the right answer · no support
4. They are rendered weightless by the impact — 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 4 · formal language · right ✓

Select the response consistent with the established facts concerning the visibility of pedestrians to the driver of a large goods vehicle.

1. Pedestrians are visible to the driver only when the vehicle is stationary — no support
2. If the driver's face cannot be seen in the mirror, the driver cannot see the pedestrian — ← Mova's choice · ✓ the right answer · score 10
3. The driver can at all times see any pedestrian adjacent to the cab — score 7
4. Large vehicles possess no areas concealed from the driver — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 10, against 7 for the next best. Its support: lesson 37, line 15: «Big vehicles have blind spots; if you cannot see the driver's face in the mirror, the driver cannot see you.», reached through the option's own match among the sentences about the question's things. What matched: the same action «see» (+4); the same thing acted on «face» (+4); the same place «mirror» (+2). · the question and its options parsed, with trees and pragmatics

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