Wind and weather

Tests: 7 of 11 right · Exam: 1 of 4 right · Kind: ★ · Understood: 10 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 15 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 · ★ · right ✓

My nan says when the barometer drops, take a brolly. Is she onto something?

1. Yes, falling pressure often warns of rain and wind — ← Mova's choice · ✓ the right answer · score 3
2. No, a dropping barometer means sunshine — no support
3. No, barometers only show the temperature, not the weather — no support
4. Yes, but only in summer — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 3, the only option with support. Its support: lesson 15, line 9: «A barometer measures air pressure, and a falling barometer warns that bad weather may be coming.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «barometer» (+2); the same thing acted on «air pressure» (+2). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 2 · ★ · right ✓

At night on the beach the breeze turns round and blows out to sea. Why?

1. The Moon pulls the air out across the water at night — no support
2. The tide pulls the wind out to sea along with it — no support
3. The land cools faster than the sea at night — ← Mova's choice · ✓ the right answer · score 9
4. The sea gets hotter in the dark than the sand does — no support

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 9, the only option with support. Its support: lesson 15, line 7: «On a sunny day the land warms faster than the sea, so warm air rises over the land and cooler sea air blows in; at night the land also cools faster than the se…», reached through the cause of the sentence the question matched. What matched: the same action «cool» (+4); the same property (+3); the same doer «land» (+2). · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · right ✓

Kid in a cartoon floats off holding an umbrella in a gust. What's more likely in real life?

1. The umbrella becomes a parachute upwards — no support
2. The wind stops when it touches the umbrella — no support
3. The umbrella flips inside out and the kid stays put — ← Mova's choice · ✓ the right answer · score 2
4. The kid flies over the rooftops — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 2, the only option with support. Its support: lesson 15, line 13: «An umbrella turns inside out when a gust pushes up underneath it harder than from above.», reached through the option's own match among the sentences about the question's things. What matched: the same doer «umbrella» (+2); the same property (+1). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 4 · ★ · right ✓

Why do pilots prefer to take off into the wind rather than with it?

1. More air flows over the wings, giving more lift — ← Mova's choice · ✓ the right answer · score 6
2. The windsock at the end of the runway tells them to — no support
3. It saves the passengers from getting dizzy as they climb — score 2
4. The wind cools the engines down so they work better — score 1

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 6, against 2 for the next best. Its support: lesson 15, line 12: «A windsock shows which way the wind blows, and pilots take off into the wind because it gives the wings more air flowing over them.», reached through the same lesson line as the sentence the question matched. What matched: the same action «flow» (+4); the same doer «more air» (+2). · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · wrong ✗

What would happen to the sea breeze on a cloudy day when the land barely warms?

1. It would turn into a tornado — no support
2. It would blow from the land instead all day — ← Mova's choice · score 2
3. It would be weak or missing — ✓ the right answer · no support
4. It would blow much harder — no support

Why: It took the question to ask what happens next. It chose option 2 with score 2, the only option with support. Its support: lesson 15, line 7: «On a sunny day the land warms faster than the sea, so warm air rises over the land and cooler sea air blows in; at night the land also cools faster than the se…», reached through the option's own match among the sentences about the question's things. What matched: the same doer «land» (+2); the same property (+1). Against it: a different action (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · right ✓

oi, why's my kite just lying there, is it broke?

1. It needs to be filled with gas — no support
2. Probably not, there is too little wind to push it up — ← Mova's choice · ✓ the right answer · score 3
3. Yes, kites only work brand new — score 3
4. The string is too short to pull it up into the wind properly — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 3, tied with another option at 3 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 15, line 11: «A kite flies because the wind is turned downwards by the tilted kite and pushes it up, while the string holds it at an angle.», reached through a sentence linked to the one the question matched. What matched: the same action «push up» (+2); the same thing acted on «wind» (+2). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

Someone says a tornado sucks up roofs like a giant hoover. What is closer to the truth?

1. A tornado is a real pipe of air from the sky — ← Mova's choice · score 6
2. Fast spinning wind and very low pressure in the middle rip and lift them — ✓ the right answer · no support
3. The roofs float up because they get hot — no support
4. Tornadoes are only strong enough to lift leaves — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 6, the only option with support. Its support: lesson 15, line 15: «A tornado is a column of air spinning very fast with very low pressure in its middle, and its winds can rip off roofs and lift cars.», reached through the remembered sentence the question matched. What matched: the same circumstance (+5); the same light verb (be, have, do, get, go) (+2); the same doer «tornado» (+1). Against it: a different thing acted on (counts against) (-2). The right option, 2, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 8 · ★ · wrong ✗

Which is true about how hard wind pushes?

1. Wind always pushes exactly the same, whether it is fast or slow — ← Mova's choice · score 4
2. Wind only pushes on things that are moving — score 4
3. A small rise in wind speed can make its push much bigger — ✓ the right answer · no support
4. Slow wind pushes harder than fast wind — score 4

Why: It took the question to ask which statement is true. 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 5, line 13: «Wind pushes on a sail, and the bigger the sail and the stronger the wind, the bigger the push; sailors can even sail partly against the wind by angling the sai…», reached through the remembered sentence the question matched. What matched: the same action «push» (+3); the same doer «wind» (+1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · right ✓

You blow very gently on a candle and it burns brighter. How is that possible?

1. It is impossible, so you must be mistaken — no support
2. Gentle blowing makes the wick grow longer and burn more — no support
3. A gentle breath brings fresh air to the flame — ← Mova's choice · ✓ the right answer · score 2
4. Your breath contains extra wax — no support

Why: It took the question to ask what something is like. It chose option 3 with score 2, the only option with support. Its support: lesson 14, line 3: «When you drink through a straw you do not really pull the juice up; you take some air out of the straw, and the air pressing on the juice in the cup pushes it…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «air» (+2); the same action «take» (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

Why is a door stop a good idea on a windy day with the windows open?

1. It keeps the room warmer when the windows are open — no support
2. A gust can slam the door on someone's fingers — ← Mova's choice · ✓ the right answer · score 3
3. It stops the windows from breaking in the strong wind — no support
4. It keeps the wind from blowing into the house at all — no support

Why: It took the question to ask why something happens (its cause). It chose option 2 with score 3, the only option with support. Its support: lesson 15, line 3: «Moving air pushes on whatever is in its way, so it can lift a kite, flip an umbrella, slam a door or, when it is very fast, push a tree over.», reached through the option's own match among the sentences about the question's things. What matched: the same action «slam» (+3); the same thing acted on «door» (+1). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · wrong ✗

Why is it dangerous to walk through a park full of tall trees in a storm?

1. Trees make the wind colder — ← Mova's choice · no support
2. Strong wind can bring down branches or whole trees — ✓ the right answer · no support
3. Trees block the rain and make it worse — no support
4. Trees pull lightning down onto people, but only in summer — 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 onshore breeze observed at the coast on a sunny afternoon.

1. The motion of the tides towards the shore during the afternoon — ← Mova's choice · no support
2. The breaking of waves upon the beach — no support
3. The cooling of the land relative to the sea — no support
4. The more rapid warming of the land relative to the sea — ✓ 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 2 · formal language · wrong ✗

Which of the following statements most accurately characterises an area of low atmospheric pressure?

1. It is associated exclusively with snowfall — ← Mova's choice · no support
2. It exerts no influence upon the weather — no support
3. It is invariably associated with clear, calm and settled conditions — no support
4. It is commonly associated with cloud, wind and precipitation — ✓ 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 · right ✓

It is given that the speed of a wind is doubled. Ascertain the approximate consequent alteration in the force it exerts.

1. The force is increased approximately fourfold — ← Mova's choice · ✓ the right answer · no support
2. The force is diminished to one half of its former value — no support
3. The force remains wholly unaltered by the change — no support
4. The force is increased approximately twofold, and no more — 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 ✗

State the principal reason for which an aircraft commences its take-off facing into the wind.

1. The passengers are thereby protected from noise — ← Mova's choice · no support
2. The fuel is thereby conserved entirely — no support
3. The engines are thereby cooled — no support
4. The airflow over the wings, and therefore the lift, is thereby increased — ✓ 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/physics/15-wind-and-weather/