---
title: Ice on ponds and cold water in winter — how Mova does on the tests · Medicine
description: Lesson 74 of the medicine course of Mova's primary school: 4 of 11 tests right, exam 1 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

<!-- md -->
[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/school-run/medicine/74-ice-on-ponds-and-cold-water-in-winter/)

<!-- crumbs -->
[home](https://md.mova.elamur.ai/free/en/) / [at school](https://md.mova.elamur.ai/free/en/school-run/) / [Medicine](https://md.mova.elamur.ai/free/en/school-run/medicine/) / 74

# Ice on ponds and cold water in winter

<!-- .vintro -->
**Tests:** 4 of 11 right · **Exam:** 1 of 4 right · **Kind:** ★★ · **Understood:** 7 of 15 · **Run:** 2026-10-18, commit `f3c23ea72`

<!-- .vabout -->
Lesson 74 of the medicine 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](https://md.mova.elamur.ai/free/en/corpora/school/medicine/74-ice-on-ponds-and-cold-water-in-winter/).

<!-- .vabout -->
Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/).

<!-- div qa no -->

### Test 1 · ★★ · wrong ✗ {#t1}

<!-- .q -->
«if it holds a stone it'll hold me». Right?

- **1.** Yes, if you throw the stone hard — **← Mova's choice** · no support
- **2.** No, a stone weighs a tiny fraction of a child — **✓ the right answer** · no support
- **3.** No, but it will hold two kids — no support
- **4.** Yes, stones are much heavier than kids for their size — no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t1/)

<!-- /div -->

<!-- div qa no -->

### Test 2 · ★★ · wrong ✗ {#t2}

<!-- .q -->
Maisie: «Biscuit! I'm coming!» What would likely happen if she went out?

- **1.** The dog would sink and she'd be fine — no support
- **2.** The ice would get thicker under her — **← Mova's choice** · score 4
- **3.** Two in the water instead of one — **✓ the right answer** · no support
- **4.** She'd carry Biscuit back safely — no support

<!-- .why -->
**Why:** It took the question to ask what happens next. It chose option 2 with score 4, the only option with support. Its support: lesson 74, line 1: «Freddie in Yorkshire stamps on the edge of the frozen pond, «It's solid, our kid, I'm going out to the middle», but ice on ponds, lakes and canals is often thi…», reached through what followed the sentence the question matched. What matched: the same doer «ice» (+4). The right option, 3, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t2/)

<!-- /div -->

<!-- div qa ok -->

### Test 3 · ★★ · right ✓ {#t3}

<!-- .q -->
Rory: «hold on, I'm coming to get you!» What's the better plan?

- **1.** Lie flat on the ice and crawl out to him slowly — no support
- **2.** Jump in after him to help him swim — no support
- **3.** Stay on the bank, call 999 and reach or throw — **← Mova's choice** · **✓ the right answer** · score 8
- **4.** Run out, the ice held Fionn at first — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 3 with score 8, the only option with support. Its support: lesson 74, line 3: «The deadliest moment is the rescue: people drown going onto ice after a friend or a dog, and dogs usually scramble out by themselves, so you stay on the bank,…», reached through the option's own match among the sentences about the question's things. What matched: the same action «stay» (+4); the same place «bank» (+4). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t3/)

<!-- /div -->

<!-- div qa no -->

### Test 4 · ★★ · wrong ✗ {#t4}

<!-- .q -->
The cold water shock gasping lasts about 90 seconds. What should Rory do during it?

- **1.** Wait quietly on the bank until it's all over — **← Mova's choice** · no support
- **2.** Step onto the ice to listen for Fionn better — no support
- **3.** Keep shouting to Fionn while he calls 999 — **✓ the right answer** · no support
- **4.** Go home quickly and get a towel and blanket — no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t4/)

<!-- /div -->

<!-- div qa ok -->

### Test 5 · ★★ · right ✓ {#t5}

<!-- .q -->
Ben: «sound (fine), I'm not even cold». Half an hour later he mumbles. Why can't he tell?

- **1.** He's lying to look tough — no support
- **2.** Shivering means you're warming up nicely again — no support
- **3.** When the body gets too cold you stop noticing — **← Mova's choice** · **✓ the right answer** · score 5
- **4.** Wet jeans warm you up — no support

<!-- .why -->
**Why:** It took the question to ask why something happens (its cause). It chose option 3 with score 5, the only option with support. Its support: lesson 74, line 4: «Water pulls heat from your body about 25 times faster than air at the same temperature, and wet clothes keep pulling, so Ben, soaked to the knees on a frosty w…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «body» (+3); the same property (+1); the same light verb (be, have, do, get, go) (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t5/)

<!-- /div -->

<!-- div qa no -->

### Test 6 · ★★ · wrong ✗ {#t6}

<!-- .q -->
Hamza: «it's like an ice rink, innit». What's the difference from a rink?

- **1.** Rinks are colder than canals, so canals are safer — **← Mova's choice** · no support
- **2.** Canal ice is thin, with deep cold water below — **✓ the right answer** · no support
- **3.** There's no difference at all — no support
- **4.** Canals are shallower than a bath — no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t6/)

<!-- /div -->

<!-- div qa no -->

### Test 7 · ★★ · wrong ✗ {#t7}

<!-- .q -->
«Can I come in with you? I'm not a wimp». What's true for kids in the January sea?

- **1.** Being brave keeps you warm — **← Mova's choice** · no support
- **2.** Kids lose heat even faster than adults — **✓ the right answer** · no support
- **3.** Sea water is warm in winter — no support
- **4.** Kids are better at cold water than adults — no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t7/)

<!-- /div -->

<!-- div qa ok -->

### Test 8 · ★★ · right ✓ {#t8}

<!-- .q -->
In a cartoon a penguin and a boy skate across a frozen lake, the ice cracks and they hop to safety. What's real?

- **1.** People drown when ice breaks; never go on it — **← Mova's choice** · **✓ the right answer** · score 7
- **2.** Cracks only appear in cartoons — no support
- **3.** You can always hop to safety if you're quick enough — no support
- **4.** Lake ice never breaks in winter — score 4

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 1 with score 7, against 4 for the next best. Its support: lesson 74, line 1: «Freddie in Yorkshire stamps on the edge of the frozen pond, «It's solid, our kid, I'm going out to the middle», but ice on ponds, lakes and canals is often thi…», reached through the option's own match among the sentences about the question's things. What matched: the same action «break» (+4); the same doer «ice» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t8/)

<!-- /div -->

<!-- div qa ok -->

### Test 9 · ★★ · right ✓ {#t9}

<!-- .q -->
Freya: «we'll stop way before the pond, sure we will». Why might she not?

- **1.** Ponds pull sledges towards them as they go downhill — no support
- **2.** She can steer like a car — no support
- **3.** Sledges are hard to stop on packed snow and ice — **← Mova's choice** · **✓ the right answer** · score 7
- **4.** Sledges always stop on their own — score 3

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 3 with score 7, against 3 for the next best. Its support: lesson 74, line 17: «Sledges are hard to stop on packed snow and ice, so a slope that runs out onto water or a road is a trap.», reached through the remembered sentence the question matched. What matched: the same place «packed snow» (+4); the same action «stop» (+2); the same doer «sledges» (+1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t9/)

<!-- /div -->

<!-- div qa no -->

### Test 10 · ★★ · wrong ✗ {#t10}

<!-- .q -->
1 minute in cold water cools you like about how long in air of the same temperature?

- **1.** About 1 minute, the same — no support
- **2.** About 25 hours or more — **← Mova's choice** · score 5
- **3.** About 5 seconds only — no support
- **4.** About 25 minutes — **✓ the right answer** · no support

<!-- .why -->
**Why:** It took the question to ask what something is like. It chose option 2 with score 5, the only option with support. Its support: lesson 36, line 12: «At hard effort, breathing through the mouth as well as the nose lets in much more air, and that is fine.», 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 circumstance (+2); the same property (+1). Against it: a different doer (counts against) (-1). The right option, 4, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t10/)

<!-- /div -->

<!-- div qa no -->

### Test 11 · ★★ · wrong ✗ {#t11}

<!-- .q -->
Lily: «Grandad did it in '63, so it's fine». What would happen if she tried?

- **1.** The lake would freeze thicker for her — **← Mova's choice** · no support
- **2.** She'd be fine; ice never changes over the years — no support
- **3.** Grandad's old skates would keep her up — no support
- **4.** She could fall through much thinner ice — **✓ the right answer** · no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/t11/)

<!-- /div -->

<!-- div qa no -->

### Exam question 1 · formal language · wrong ✗ {#e1}

<!-- .q -->
Identify the recommendation of the Royal Society for the Prevention of Accidents in respect of ice upon inland waters.

- **1.** Ice may be crossed in the month of January — **← Mova's choice** · no support
- **2.** Ice may be crossed if it supports a stone — no support
- **3.** Ice may be crossed in pairs — no support
- **4.** No person is to venture onto such ice — **✓ the right answer** · no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/e1/)

<!-- /div -->

<!-- div qa no -->

### Exam question 2 · formal language · wrong ✗ {#e2}

<!-- .q -->
It is given that a companion has fallen through ice. State the appropriate course of action.

- **1.** Remain upon the bank, summon assistance and reach or throw from safety — **✓ the right answer** · score 4
- **2.** Depart the scene without informing any person — no support
- **3.** Proceed onto the ice to effect a rescue — **← Mova's choice** · score 7
- **4.** Enter the water to provide warmth — no support

<!-- .why -->
**Why:** It took the question to ask which statement is true. It chose option 3 with score 7, against 4 for the next best. Its support: lesson 44, line 15: «On ice, bent knees and a forward lean keep you balanced; leaning back makes you fall more and can hit your head.», reached through the option's own match among the sentences about the question's things. What matched: the same action «keep» (+4); the same place «ice» (+4). Against it: a different doer (counts against) (-1). The right option, 1, scored 4. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/e2/)

<!-- /div -->

<!-- div qa ok -->

### Exam question 3 · formal language · right ✓ {#e3}

<!-- .q -->
Which of the following statements most accurately characterises the thickness of ice upon a pond?

- **1.** It may vary considerably and cannot be ascertained by sight — **← Mova's choice** · **✓ the right answer** · no support
- **2.** It is greatest at the centre of the pond — no support
- **3.** It is reliably indicated by the thickness at the bank — no support
- **4.** It is uniform throughout the pond — no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/e3/)

<!-- /div -->

<!-- div qa no -->

### Exam question 4 · formal language · wrong ✗ {#e4}

<!-- .q -->
Select the response consistent with the established facts concerning the loss of heat in water.

- **1.** Water removes heat more slowly than air — **← Mova's choice** · no support
- **2.** Water adds heat to the body in winter — no support
- **3.** Water removes heat approximately twenty-five times faster than air — **✓ the right answer** · no support
- **4.** Water and air remove heat at an identical rate — no support

<!-- .why -->
**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](https://md.mova.elamur.ai/free/en/corpora/questions/medicine/74-ice-on-ponds-and-cold-water-in-winter/e4/)

<!-- /div -->

<!-- pn -->
- ← previous: [73. Trampolines, playgrounds and skate parks](https://md.mova.elamur.ai/free/en/school-run/medicine/73-trampolines-playgrounds-and-skate-parks/)
- next →: [75. Dares: cliffs, roofs, tombstoning, railways and…](https://md.mova.elamur.ai/free/en/school-run/medicine/75-dares-cliffs-roofs-tombstoning-railways-and-saying-no/)
- ↑ back to [Medicine](https://md.mova.elamur.ai/free/en/school-run/medicine/)