Eyes and ears deeper: glasses, colour blindness, tears, earwax and dizziness

Tests: 5 of 12 right · Exam: 0 of 4 right · Kind: ★★ · Understood: 9 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 362 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 ✓

«my mate's colour blind, so he sees everything in black and white like an old telly» What is right?

1. No, most colour-blind people see colours but mix up some reds and greens — ← Mova's choice · ✓ the right answer · score 0
2. No, colour-blind people see no colours except blue — score 0
3. Yes, colour-blind people see only grey, like a very old black and white film — no support
4. Yes, but only at night — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 0, tied with another option at 0 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 244, line 15: «Jumping spiders build no catching web: they stalk and leap, their big front eyes work like telescopes, they see colours, and some plan a route round obstacles…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «colours» (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 2 · ★★ · wrong ✗

How could traffic lights help a colour-blind driver who cannot tell red from green?

1. Colour-blind people are not allowed near roads — score 4
2. Red is always in the same place, at the top, so the position tells him — ✓ the right answer · no support
3. Green lights blink and red ones do not — ← Mova's choice · score 5
4. Red lights always make a loud beeping noise so that drivers can hear them change — score 3

Why: It took the question to ask what something is like. It chose option 3 with score 5, against 4 for the next best. Its support: lesson 73, line 4: «In games and cartoons a creature «evolves» in a flash of light into a new form; real evolution never happens to one animal in its life, it happens to a whole p…», reached through the option's own match among the sentences about the question's things. What matched: the same action «flash» (+3); the same doer «light» (+2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 3 · ★★ · wrong ✗

Count them: a pirate in a cartoon has an eye patch over one eye. How many blind spots has he got in his open eyes?

1. 3 — ← Mova's choice · no support
2. 0 — no support
3. 1 — ✓ the right answer · no support
4. 2 — 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 ✓

«why don't I see a hole in everything if each eye has a blind spot» What is the answer?

1. We blink far too fast to ever notice the big dark hole in the middle of what we see — score 1
2. The brain fills the hole with what is around it, and the other eye covers it — ← Mova's choice · ✓ the right answer · score 4
3. The blind spot only opens at night — no support
4. There is no blind spot at all, it is just a myth — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 4, against 1 for the next best. Its support: lesson 362, line 10: «Every eye has a blind spot where the nerve leaves and there are no light cells; the brain fills in the hole, and an octopus eye, wired the other way round, has…», reached through the option's own match among the sentences about the question's things. What matched: the same action «fill» (+2); a different thing acted on (counts against) (+2). · the question and its options parsed, with trees and pragmatics

Test 5 · ★★ · wrong ✗

«earwax is gross, gonna dig it all out with a cotton bud every day» What would a doctor say?

1. Use a pencil instead, it is harder — no support
2. Wash it out with hot water daily — ← Mova's choice · score 2
3. Good idea, the deeper you dig the cleaner and healthier the ear will be — no support
4. Leave the inside alone; wax cleans itself out and protects the ear — ✓ the right answer · no support

Why: It took the question to ask what it is done to. It chose option 2 with score 2, the only option with support. Its support: lesson 362, line 14: «Earwax traps dust, helps keep germs out and moves out by itself as you chew and talk; cotton buds often push it deeper, and one gene decides whether it is dry…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+3); the same thing acted on «earwax» (+1). Against it: a different action (counts against) (-2). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 6 · ★★ · wrong ✗

How might a ballet dancer spin many times without getting dizzy?

1. She spins only on her left foot — ← Mova's choice · no support
2. She holds her breath the whole time — no support
3. She fixes her eyes on one spot and whips her head round last — ✓ the right answer · no support
4. She closes both ears tightly with her fingers so the fluid cannot move — 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 7 · ★★ · wrong ✗

In a cartoon, Jerry hits Tom on the head and stars and birds spin round him for ages. What makes a real person feel the world is spinning after they stop turning?

1. Fluid swirling on in the curved tubes of the inner ear — ✓ the right answer · no support
2. Their eyes rolling right round in their heads — score -2
3. Their brain falling asleep for a moment — score 3
4. Little birds really flying round their head — ← Mova's choice · score 8

Why: It took the question to ask who or what does it. It chose option 4 with score 8, against 3 for the next best. Its support: lesson 143, line 1: «In Bambi, a spotted fawn wobbles on thin legs, Thumper the rabbit thumps his foot, Flower the skunk blushes and Friend Owl spins his head all the way round.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); the same doer «friend» (+2); a different action (counts against) (+2). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 8 · ★★ · right ✓

Why do drivers almost never get car sick?

1. Drivers hold their breath while driving — no support
2. Drivers have stronger ears than other people because they train them — no support
3. The steering wheel stops sickness — no support
4. They look ahead at the road, so their eyes and ears agree — ← Mova's choice · ✓ the right answer · score 6

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 6, the only option with support. Its support: lesson 362, line 16: «In car sickness the inner ear feels the car moving but eyes on a page say everything is still; looking out of the front window at the horizon helps them agree.», reached through the same lesson line as the sentence the question matched. What matched: the same action «agree» (+5); the same doer «ears» (+1). · the question and its options parsed, with trees and pragmatics

Test 9 · ★★ · wrong ✗

What would happen if your tear drains were blocked?

1. You would never sneeze again — no support
2. Tears would spill down your cheeks even when you are not crying — ✓ the right answer · no support
3. Your eyes would become totally dry and sore, because no tears could be made — ← Mova's choice · score 6
4. You would see in black and white — no support

Why: It took the question to ask what happens next. It chose option 3 with score 6, the only option with support. Its support: lesson 362, line 17: «A thin tube joins each middle ear to the back of the throat to let air in and out; on a plane, swallowing, yawning or chewing opens it, and a cold can block it…», reached through what followed the sentence the question matched. What matched: the same action «make» (+6). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 10 · ★★ · right ✓

«got a stinking cold and flying tomorrow, whatever» Why might the plane hurt his ears more than usual?

1. A cold makes his eardrums much thicker and stiffer than they should be — score 3
2. The plane flies higher for people with colds — no support
3. Earwax melts in a cold — no support
4. A cold can block the tube that balances air in the middle ear — ← Mova's choice · ✓ the right answer · score 5

Why: It took the question to ask why something happens (its cause). It chose option 4 with score 5, against 3 for the next best. Its support: lesson 362, line 17: «A thin tube joins each middle ear to the back of the throat to let air in and out; on a plane, swallowing, yawning or chewing opens it, and a cold can block it…», reached through the cause of the sentence the question matched. What matched: the same thing acted on «air» (+4); the same doer «thin tube» (+3). Against it: a different action (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 11 · ★★ · right ✓

«nan says she never needed glasses so she never will, she's 60» What is most likely?

1. Almost everyone needs reading glasses one day as the eye's lens gets stiff — ← Mova's choice · ✓ the right answer · score 4
2. Glasses are only for short sight — no support
3. Only children ever need glasses — score 0
4. She is right, eyes never change once you are a grown-up, however old you get — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 4, against 0 for the next best. Its support: lesson 362, line 7: «After about 40 the lens inside the eye gets stiffer and cannot change shape enough to focus on close things, so almost everyone needs reading glasses one day.», reached through the remembered sentence the question matched. What matched: its «because» matches the remembered cause (+4); the same thing acted on «reading glasses» (+3). Against it: the same doer «everyone» (-3). · the question and its options parsed, with trees and pragmatics

Test 12 · ★★ · wrong ✗

Count them: two friends stare at screens for one minute and blink 5 times each instead of about 15. How many blinks did they miss together?

1. 5 — ← Mova's choice · no support
2. 20 — ✓ the right answer · no support
3. 30 — no support
4. 10 — 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 · wrong ✗

Identify the principal cause of the condition known as short sight.

1. The tear ducts are obstructed — ← Mova's choice · no support
2. The lens of the eye is excessively stiff — no support
3. The eyeball is of excessive length, so distant images are focused in front of the retina — ✓ the right answer · no support
4. The colour-sensitive cells are absent — 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 · wrong ✗

Which of the following statements most accurately characterises the comparative frequency of colour blindness in boys and girls?

1. It is considerably more frequent among girls — ← Mova's choice · no support
2. It is confined entirely to adults — no support
3. It is considerably more frequent among boys, approximately one in twelve — ✓ the right answer · no support
4. It is equally frequent among boys and girls — 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 facts concerning the sensation of dizziness experienced upon cessation of rotation.

1. The blood within the feet continues to circulate in a circle — ← Mova's choice · no support
2. The eyeballs continue to rotate within their sockets — no support
3. The fluid within the semicircular canals of the inner ear continues in motion — ✓ the right answer · no support
4. The ground beneath the subject undergoes rotation — 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 · wrong ✗

Ascertain the reason for which the practice of reading in the rear of a moving vehicle is apt to induce nausea.

1. The seat belt compresses the stomach — ← Mova's choice · no support
2. The paper of the book emits a nauseating odour — no support
3. The air within the vehicle is wholly consumed — no support
4. The organs of balance perceive motion whilst the eyes report stillness — ✓ 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

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/biology/362-eyes-and-ears-deeper-glasses-colour-blindness-tears-earwax-and-dizziness/