сосуды1

Apr 12, 2011Download as PPT, PDF0 likes1,763 views

eazvonova

Сегодня мы узнаем:
 Как устроен лифт для кораблей;
 В чем секрет фонтана Петра I;

 Почему одинаков уровень морей и
океанов;
 Как правильно выбрать чайник в
магазине.

Что мы знаем.
1. Как можно рассчитать
гидростатическое давление?

2. Сравните давления в
сосудах. Будет ли
переливаться жидкость из
сосуда в сосуд, если открыть
кран?

3. До каких пор вода будет
переливаться?

Сосуды,
имеющие общую
(соединяющую их)
часть, заполненную
покоящейся жидкостью,
называются сообщающимися

Закон сообщающихся
сосудов:
однородная жидкость
в сообщающихся сосудах
устанавливается на одном уровне.

Что произойдет,если в сообщающиеся
сосуды налить две несмешивающиеся
жидкости разной плотности?

При равенстве давлений высота
столба жидкости с большей
плотностью будет меньше
высоты столба жидкости с
меньшей плотностью.
Докажите это, используя закон Паскаля и определение
гидростатического давления.

Проверим ваш результат

p1=p2,

p1=gρ1h1, p2=gρ2h2 ,

gρ1h1=gρ2h2, т.е h1:h2=ρ2:ρ1.

Высоты столбов разнородных жидкостей

в сообщающихся сосудах

обратно пропорциональны их плотностям

Каскады
падающей
воды,фонтаны,
украшают
многие города.
А действуют
фонтаны
благодаря
закону
сообщающихся
Ташкент,
сосудов. Фонтаны Петродворца
Тбилиси, парк «Победы»
площадь «Дружбы»

Римлянам был неизвестен закон сообщающихся сосудов.
Для снабжения населения водой они возводили много-
километровые акведуки, водопроводы, доставлявшие
воду из горных источников.

Повторим изученное:
Сообщающиеся сосуды

гейзер

фонтан

шлюз

водопровод с
водонапорной башней

гидравлический
пресс

водомерные
стекла

артезианский
колодец

Используя схему шлюзования судов,
объясните
принцип действия шлюзов

Всем спасибо за работу.
Домашнее задание:

Обязательное: изучить ξ 39.

Дополнительное:

подумайте, как можно было бы наиболее простыми средствами

устроить фонтан где-нибудь в парке или во дворе,

начертите схему такого устройства и объясните его действие.

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сосуды1

1. Сообщающиеся сосуды

2. Сегодня мы узнаем:  Как устроен лифт для кораблей;  В чем секрет фонтана Петра I;  Почему одинаков уровень морей и океанов;  Как правильно выбрать чайник в магазине.

3. Что мы знаем. 1. Как можно рассчитать гидростатическое давление? 2. Сравните давления в сосудах. Будет ли переливаться жидкость из сосуда в сосуд, если открыть кран? 3. До каких пор вода будет переливаться?

4. Сосуды, имеющие общую (соединяющую их) часть, заполненную покоящейся жидкостью, называются сообщающимися

5. Закон сообщающихся сосудов: однородная жидкость в сообщающихся сосудах устанавливается на одном уровне.

6. Что произойдет,если в сообщающиеся сосуды налить две несмешивающиеся жидкости разной плотности? При равенстве давлений высота столба жидкости с большей плотностью будет меньше высоты столба жидкости с меньшей плотностью. Докажите это, используя закон Паскаля и определение гидростатического давления. Проверим ваш результат

7. p1=p2, p1=gρ1h1, p2=gρ2h2 , gρ1h1=gρ2h2, т.е h1:h2=ρ2:ρ1. Высоты столбов разнородных жидкостей в сообщающихся сосудах обратно пропорциональны их плотностям

8. Водомерное стекло парового котла.

9. Каскады падающей воды,фонтаны, украшают многие города. А действуют фонтаны благодаря закону сообщающихся Ташкент, сосудов. Фонтаны Петродворца Тбилиси, парк «Победы» площадь «Дружбы»

10. Римлянам был неизвестен закон сообщающихся сосудов. Для снабжения населения водой они возводили много- километровые акведуки, водопроводы, доставлявшие воду из горных источников.

11. Повторим изученное: Сообщающиеся сосуды гейзер фонтан шлюз водопровод с водонапорной башней гидравлический пресс водомерные стекла артезианский колодец

12. Используя схему шлюзования судов, объясните принцип действия шлюзов

13. Всем спасибо за работу. Домашнее задание: Обязательное: изучить ξ 39. Дополнительное: подумайте, как можно было бы наиболее простыми средствами устроить фонтан где-нибудь в парке или во дворе, начертите схему такого устройства и объясните его действие.

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сосуды1

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