Light, shadows and colours

Tests: 6 of 12 right · Exam: 1 of 4 right · Kind: ★ · Understood: 13 of 16 · Run: 2026-10-18, commit f3c23ea72

Lesson 53 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 child stands in the sunshine. Where does the shadow fall?

1. On the side away from the Sun — ← Mova's choice · ✓ the right answer · no support
2. Directly on top of the child — no support
3. Under the child, whatever the Sun does — no support
4. Always towards the Sun — 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 ✗

Why can't you see round a corner without a mirror?

1. Your eyes only work straight ahead — no support
2. The corner absorbs all the light — ← Mova's choice · score 4
3. Light goes in straight lines and does not bend round it — ✓ the right answer · score 3
4. Walls are made of dark material — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 4, against 3 for the next best. Its support: lesson 53, line 3: «We see an object when light bounces off it and enters our eyes. A smooth shiny surface like a mirror reflects light neatly, so we see a clear picture in it.», reached through the cause of the sentence the question matched. What matched: the same thing acted on «light» (+5). Against it: a different action (counts against) (-1). The right option, 3, scored 3. · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · right ✓

A green leaf is lit by sunlight. Which is true?

1. It reflects mostly green light — ← Mova's choice · ✓ the right answer · score 5
2. It turns all light into green paint — no support
3. It gives off its own green light — no support
4. It absorbs mostly green light — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 5, the only option with support. Its support: lesson 53, line 4: «White sunlight is really a mix of all the colours of the rainbow. A red apple looks red because it reflects mostly red light into our eyes and soaks up the oth…», reached through the same lesson line as the sentence the question matched. What matched: the same action «reflect» (+4); the same thing acted on «red light» (+2). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 4 · ★ · right ✓

Which object would make the darkest, sharpest shadow?

1. A thick wooden board — ← Mova's choice · ✓ the right answer · no support
2. A plastic bottle of clear water — no support
3. A piece of tissue paper — no support
4. A sheet of clear glass — 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 5 · ★ · wrong ✗

At night the Moon shines brightly. Where does its light come from?

1. Glowing rocks deep inside it — score 3
2. Sunlight reflected off its surface — ✓ the right answer · no support
3. Fire burning on the Moon — score 3
4. Light from the Earth's cities — ← Mova's choice · score 9

Why: It took the question to ask where. It chose option 4 with score 9, against 3 for the next best. Its support: lesson 53, line 1: «Light comes from sources such as the Sun, a lamp or a fire. The Moon is not a source: it only reflects sunlight.», reached through the remembered sentence the question matched. What matched: the same action «come» (+6); the same doer «light» (+3). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

Why does a cat need at least a little light to see in a dark room?

1. Seeing needs light entering the eyes — ← Mova's choice · ✓ the right answer · score 4
2. Darkness hides objects completely from all animals — no support
3. Cats see using heat only — no support
4. Cats make light with their eyes — score 4

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 25, line 18: «Most seeds do not need light to germinate, because they use their own food store at first.», reached through the cause of the sentence the question matched. What matched: the same thing acted on «light» (+5). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

A rainbow appears when sunlight shines through raindrops. What does it show?

1. Clouds add colour to the light — ← Mova's choice · score 7
2. The Sun is many colours at different times — score 7
3. Raindrops are painted in colours — no support
4. White light contains all the colours — ✓ the right answer · score 7

Why: It took the question to ask what it is done to. It chose option 1 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 53, line 4: «White sunlight is really a mix of all the colours of the rainbow. A red apple looks red because it reflects mostly red light into our eyes and soaks up the oth…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same thing acted on «other colours» (+3). The right option, 4, scored 7. · the question and its options parsed, with trees and pragmatics

Test 8 · ★ · wrong ✗

You want to cast a bigger shadow puppet on the wall. What should you do?

1. Use a dimmer lamp — ← Mova's choice · no support
2. Move the puppet nearer to the lamp — ✓ the right answer · no support
3. Use a clear plastic puppet — no support
4. Move the puppet nearer to the wall — 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 9 · ★ · wrong ✗

why's my shadow huge when i'm right by the torch

1. Shadows grow when it is cold — no support
2. Light bends around you — no support
3. The torch makes you bigger — ← Mova's choice · score 3
4. Closer to the light, you block more of it — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 3 with score 3, the only option with support. Its support: lesson 53, line 9: «Moving an object closer to a lamp makes its shadow bigger.», reached through the same lesson line as the sentence the question matched. What matched: the same action «make» (+4); the same property (+1). Against it: a different doer (counts against) (-1); a different thing acted on (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 10 · ★ · wrong ✗

why do black t-shirts get so hot in the sun

1. Black lets the light pass through — no support
2. Black makes its own heat — ← Mova's choice · score 2
3. Black absorbs almost all the light — ✓ the right answer · no support
4. Black reflects almost all the light — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 2, the only option with support. Its support: lesson 14, line 7: «The heat of the Sun drives the water cycle.», reached through the option's own match among the sentences about the question's things. What matched: the same action «heat» (+1); the same doer «sun» (+1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · right ✓

my brother says the Moon makes its own light. true?

1. No, the Moon only reflects light from the Sun — ← Mova's choice · ✓ the right answer · score 8
2. No, the Moon reflects light from the Earth's lamps — score 8
3. Yes, it glows like a lamp — score 5
4. Yes, but only when it is full — score 2

Why: It took the question to ask which statement is true. It chose option 1 with score 8, tied with another option at 8 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 3, line 7: «The Moon makes no light of its own; it reflects the light of the Sun.», reached through the remembered sentence the question matched. What matched: the same action «reflect» (+4); the same doer «moon» (+2); the same thing acted on «light» (+2). · the question and its options parsed, with trees and pragmatics

Test 12 · ★ · right ✓

Sara reckons we see stuff cos light shoots out of our eyes. right?

1. Yes, that is why it is dark at night — no support
2. No, we see when light from things enters our eyes — ← Mova's choice · ✓ the right answer · score 10
3. No, we see with sound bouncing back — no support
4. Yes, eyes send out beams — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 10, the only option with support. Its support: lesson 53, line 3: «We see an object when light bounces off it and enters our eyes. A smooth shiny surface like a mirror reflects light neatly, so we see a clear picture in it.», reached through the same lesson line as the sentence the question matched. What matched: the same action «enter» (+4); the same doer «light» (+4); the same thing acted on «eyes» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following statements most accurately characterises the illumination of the Moon?

1. The Moon reflects light received from the Earth's cities — ← Mova's choice · score 7
2. The Moon reflects light received from the Sun — ✓ the right answer · score 7
3. The Moon emits light generated within its own interior — score 7
4. The Moon emits light by reason of its volcanic activity — score 7

Why: It took the question to ask who or what does it. It chose option 1 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 3, line 3: «When the Moon is between the Earth and the Sun, its lit half faces away from us and we see a new moon; when the Moon is on the far side of the Earth from the S…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same doer «moon» (+3). The right option, 2, scored 7. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

It is given that an opaque object is displaced towards a lamp. Determine the consequent alteration in its shadow.

1. The shadow shall remain of identical size — no support
2. The shadow shall diminish in size — ← Mova's choice · score 2
3. The shadow shall cease entirely to exist — no support
4. The shadow shall increase in size — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 2 with score 2, the only option with support. Its support: lesson 8, line 3: «In a lunar eclipse the Earth passes between the Sun and the Moon and the Earth's shadow falls on the Moon: the Moon goes dim and often turns coppery red, and e…», reached through the option's own match among the sentences about the question's things. What matched: the same action «fall» (+1); the same doer «shadow» (+1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Identify the principal reason for which a given object is perceived as red when illuminated by white light.

1. It reflects red light and absorbs the remaining colours — ✓ the right answer · score 4
2. It transmits all colours save red through its body — no support
3. It emits red light generated within itself — score 2
4. It absorbs red light and reflects the remaining colours — ← Mova's choice · score 8

Why: It took the question to ask which statement is true. It chose option 4 with score 8, against 4 for the next best. Its support: lesson 53, line 14: «A black object absorbs almost all light, and a white object reflects almost all of it.», reached through the remembered sentence the question matched. What matched: the same action «absorb» (+4); the same doer «black object» (+2); the same thing acted on «light» (+2). The right option, 1, scored 4. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Select the response that is consistent with the established facts concerning a material designated as translucent.

1. It emits a light of its own when illuminated — score 5
2. It permits the passage of a portion of the light incident upon it — ← Mova's choice · ✓ the right answer · score 7
3. It prevents the passage of all light incident upon it — no support
4. It permits the passage of all light incident upon it — score 7

Why: It took the question to ask which statement is true. It chose option 2 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 53, line 5: «Materials that let all the light through, like clear glass, are transparent; ones that let some through, like frosted glass, are translucent; ones that let non…», reached through the same lesson line as the sentence the question matched. What matched: the same action «let» (+4); the same doer «materials» (+4). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/53-light/