Cooking machines: oven, microwave, kettle, toaster and hob

Tests: 7 of 11 right · Exam: 0 of 4 right · Kind: plain · Understood: 12 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 11 of the technology 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 bro says microwaves cook food from the inside out. true?

1. No, they only warm the plate — no support
2. Yes, that is why the outside stays cold — no support
3. No, they heat the outer few centimetres and the heat spreads in — ← Mova's choice · ✓ the right answer · score 12
4. Yes, the middle always gets hot first — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 12, the only option with support. Its support: lesson 11, line 7: «A microwave oven sends out invisible microwaves that make the water in food wiggle and heat up, and the turntable spins so the food heats more evenly; microwav…», reached through the remembered sentence the question matched. What matched: the same action «heat» (+4); the same doer «microwaves» (+4); the same thing acted on «outer few centimetres» (+4). · the question and its options parsed, with trees and pragmatics

Test 2 · wrong ✗

In a cartoon a cat pokes a fork into the toaster to get the bread out. What is the real rule?

1. Use a metal knife instead of a fork — ← Mova's choice · score 10
2. Just do it quickly so it doesn't hurt — no support
3. It is fine to reach in once the toast has popped up and cooled — no support
4. Never poke anything in a toaster; an adult unplugs it first — ✓ the right answer · no support

Why: It took the question to ask what it is done to. It chose option 1 with score 10, the only option with support. Its support: lesson 11, line 19: «Never put metal or foil in a microwave, and never poke a knife or fork into a toaster, even when it is switched off.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+5); the same circumstance (+4); the same thing acted on «knife» (+3). 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 3 · wrong ✗

ugh the kettle's broken, it keeps clicking off on its own. is it?

1. Yes, kettles should keep boiling until unplugged — ← Mova's choice · score 8
2. No, it clicks off when the water boils, on purpose — ✓ the right answer · score 8
3. Yes, the click means a fuse inside has blown and needs changing — no support
4. No, it clicks off to save the water — score 8

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 11, line 4: «Think of Sunday morning: the kettle clicks off, the toast pops up, and the oven ticks as it holds its heat, all without anyone watching a clock.», reached through the remembered sentence the question matched. What matched: the same action «hold» (+4); the same doer «kettle» (+4). The right option, 2, scored 8. · the question and its options parsed, with trees and pragmatics

Test 4 · wrong ✗

Grandad wrapped his sandwich in foil and wants to microwave it. What do you say?

1. Only foil with holes in it is safe — ← Mova's choice · no support
2. Take the foil off; metal must not go in a microwave — ✓ the right answer · no support
3. Foil is fine, it keeps the heat in — no support
4. Wrap it twice so it heats faster — 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 · right ✓

What would happen if the microwave door stayed working while it was open?

1. The microwaves would turn into light — no support
2. Nothing, the turntable would just stop — no support
3. It doesn't: safety switches stop the microwaves when it opens — ← Mova's choice · ✓ the right answer · score 4
4. The kitchen would fill with lovely smells and nothing else would happen — no support

Why: It took the question to ask what happens next. It chose option 3 with score 4, the only option with support. Its support: lesson 11, line 8: «The metal mesh in a microwave door has holes too small for microwaves to pass through but big enough for light, so you can see in safely, and the microwaves st…», reached through the option's own match among the sentences about the question's things. What matched: the same action «open» (+2); the same doer «door» (+2). · the question and its options parsed, with trees and pragmatics

Test 6 · wrong ✗

Ella reckons her air fryer fries chips in oil like a chip shop. Right?

1. Yes, it is full of boiling oil hidden inside — no support
2. Yes, but the oil is invisible so you can't see it — no support
3. No, it cooks them with microwaves like an oven — ← Mova's choice · score 12
4. No, it bakes them with fast hot air — ✓ the right answer · score 6

Why: It took the question to ask which statement is true. It chose option 3 with score 12, against 6 for the next best. Its support: lesson 9, line 13: «A circuit board is a green board with copper tracks; robots place tiny parts, tens of thousands an hour, and an oven melts solder, a metal that melts easily, t…», reached through the remembered sentence the question matched. What matched: the same action «fix» (+4); the same doer «oven» (+4); the same thing acted on «screens» (+4). The right option, 4, scored 6. · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

why's the plate hot if microwaves heat the food??

1. The hot food warms the plate it sits on — ← Mova's choice · ✓ the right answer · no support
2. Microwaves like plates more than they like the food — no support
3. The little light in the microwave heats it up — no support
4. The turntable rubs against it as it turns and heats it — 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 ✓

Tom touched the black glass of an induction hob next to a pan and it was only warm. Why?

1. Glass can never get hot — score 4
2. The hob was switched off all along — score 4
3. The magnetic field heats the pan, not the glass — ← Mova's choice · ✓ the right answer · score 6
4. Induction hobs only work with pans full of cold water — score 6

Why: It took the question to ask why something happens (its cause). It chose option 3 with score 6, tied with another option at 6 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 11, line 12: «Gas hobs burn gas in rings of small flames, electric hobs heat with elements, and an induction hob uses a magnetic field to heat the pan itself, so the glass s…», reached through the cause of the sentence the question matched. What matched: the same action «heat» (+4); the same thing acted on «pan» (+4). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 9 · right ✓

Which is true about the gas smell?

1. It is what makes the gas flame burn a bright blue — no support
2. It comes from burnt food stuck inside the cooker — no support
3. It means the gas coming through is extra strong today — no support
4. It is added on purpose to warn of leaks — ← Mova's choice · ✓ the right answer · score 8

Why: It took the question to ask which statement is true. It chose option 4 with score 8, the only option with support. Its support: lesson 11, line 16: «When the knob of a gas cooker is turned, a spark lights the gas; natural gas has no smell of its own, so a smell is added to make leaks easy to notice.», reached through the remembered sentence the question matched. What matched: the same action «add» (+4); the same thing acted on «smell» (+4). · the question and its options parsed, with trees and pragmatics

Test 10 · right ✓

slow cooker's been off 20 min, can I lift it to the sink?

1. No, it is too heavy to lift — no support
2. Yes, the outside never gets hot — no support
3. Yes, it cools as soon as it is off — no support
4. No, it stays hot a long time; leave it for an adult — ← Mova's choice · ✓ the right answer · score 10

Why: It took the question to ask which statement is true. It chose option 4 with score 10, the only option with support. Its support: lesson 11, line 15: «A slow cooker heats a pot gently for many hours, using about as much power as a light bulb or two, and stays hot long after it is switched off.», reached through the remembered sentence the question matched. What matched: the same action «stay» (+4); the same doer «slow cooker» (+4); the same property (+2). · the question and its options parsed, with trees and pragmatics

Test 11 · right ✓

The story goes that the microwave oven was invented when an engineer noticed what?

1. A radar machine had melted a sweet in his pocket — ← Mova's choice · ✓ the right answer · score 16
2. His kettle boiled faster near a radio — no support
3. His oven door glowed in the dark — no support
4. His toaster had blown up — no support

Why: It took the question to ask what it is done to. It chose option 1 with score 16, the only option with support. Its support: lesson 11, line 18: «The story goes that the microwave oven was invented in the 1940s when an engineer working with a radar machine noticed it had melted a sweet in his pocket.», reached through what was said in the sentence the question matched. What matched: it fills the role the question asks for (+6); the same action «melt» (+4); the same thing acted on «sweet» (+4); the same place «pocket» (+4). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the principle by which a domestic microwave oven conveys heat to foodstuffs.

1. It agitates the water molecules within the food — ✓ the right answer · score 4
2. It irradiates the food with intense visible light — no support
3. It conducts heat upwards from a heated turntable — score 6
4. It heats the surrounding air by means of a flame — ← Mova's choice · score 12

Why: It took the question to ask which statement is true. It chose option 4 with score 12, against 6 for the next best. Its support: lesson 11, line 2: «They do it in different ways: the oven heats the air in a box, the toaster makes thin wires glow red, the kettle has a hot metal element sitting in the water,…», reached through the remembered sentence the question matched. What matched: the same action «heat» (+4); the same doer «oven» (+4); the same thing acted on «air» (+4). The right option, 1, scored 4. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

It is given that natural gas possesses no odour of its own. State the reason for which an odour is added prior to supply.

1. So that the gas is rendered heavier than air — no support
2. So that the gas cannot be ignited accidentally — ← Mova's choice · score 1
3. So that any leakage may be readily detected — ✓ the right answer · no support
4. So that the flame burns with a blue colour — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 1, the only option with support. Its support: lesson 11, line 16: «When the knob of a gas cooker is turned, a spark lights the gas; natural gas has no smell of its own, so a smell is added to make leaks easy to notice.», reached through the same lesson line as the sentence the question matched. What matched: the same action «light» (+2); the same thing acted on «gas» (+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

Exam question 3 · formal language · wrong ✗

Which of the following statements most accurately characterises the operation of an induction hob?

1. A concealed gas flame heats the glass surface — no support
2. An element heats the glass, which then heats the vessel upon it — ← Mova's choice · score 4
3. A magnetic field causes the vessel itself to become hot — ✓ the right answer · no support
4. Heated water circulates beneath the glass — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 4, the only option with support. Its support: lesson 11, line 12: «Gas hobs burn gas in rings of small flames, electric hobs heat with elements, and an induction hob uses a magnetic field to heat the pan itself, so the glass s…», reached through the option's own match among the sentences about the question's things. What matched: the same action «heat» (+2); the same circumstance (+2). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Select the response consistent with the established facts concerning the automatic cut-out of an electric kettle.

1. The weight of the water depresses a switch — ← Mova's choice · no support
2. The handle detects heat and releases the switch — no support
3. A timer disconnects the supply after a set interval of three minutes — no support
4. Steam deflects a bimetallic strip, which opens the switch — ✓ the right answer · 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

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/technology/11-cooking-machines/