Guia Historia 7basico Semana42 La Tierra Morada de l Ser Humano Dic. 2012

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PLANIFICACIN CLASE N 1 Y 2 SEMANA 42 DE DICIEMBRE Ciclo : Segundo Ciclo Nivel : Sptimo ao Bsico. Unidad Temtica : La Tierra, morada del ser humano. Objetivos de la clase:

Reconocer las caractersticas de la Tierra como Sistema.

Aprendizajes esperados:

Caracterizar los componentes fsicos del planeta y sus dinmicas, incluyendo: - litsfera (actividad ssmica y volcnica) - atmsfera (clima, tiempo atmosfrico y vientos) - hidrsfera (ciclo del agua).

Contenidos:

Identificacin de las estructuras que componen la Tierra como geosistema. Actividades metodolgicas: Inicio:

Docente entrega el objetivo de la clase.

Se entrega material complementario, el texto del estudiante o el laboratorio de computacin.

Desarrollo:

Entrega la gua de trabajo y se contextualiza los contenidos.

Entregue material complementario o trabaja en el laboratorio de computacin.

Los estudiantes responden la gua

Cierre:

El docente revisa el material en clases comparando las respuestas.

Tiempo: 4 horas pedaggicas Sntesis y Evaluacin:

Analizar relaciones de los diferentes elementos que componentes del planeta Tierra



Actividad N 1. Responde las siguientes preguntas en relacin a la estructura interna de la Tierra. a) Qu entiendes por la palabra sistema? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ b) Qu sistemas conoces? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ c) Qu pasara si el normal funcionamiento de cualquier sistema es cambiado o modificado? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ d) Qu significa que la Tierra se caracteriza por su dinamismo? _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



e) Qu rol cumple la energa? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ f) Por qu se afirma que la Tierra funciona como un sistema? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ g) Observa una esfera terrestre, vers que en la costa occidental de Sudamrica hay un gran nmero de volcanes y cadenas montaosas, a qu crees que es debido? _________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ h) Se puede originar un terremoto bajo el mar? Justifica tu respuesta. __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



______________________________________________________________________________________________________________________________________ i) La corteza terrestre se mueve. Realiza la Tierra algn otro movimiento sin que lo notemos? _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Actividad N 2. Indica si son verdaderas o falsas las siguientes afirmaciones: a) _____ El manto es ms denso que la corteza terrestre. b) _____ El ncleo se encuentra a ms de 4.000 C. c) _____ La Astensfera est formada por placas. d) _____ Los volcanes se forman con materiales del manto que afloran a la superficie. e) _____ Debido a las corrientes de conveccin los materiales descienden al enfriarse. f) _____ El punto de la superficie terrestre donde es ms violento el terremoto es el hipocentro. g) _____ Desde el epicentro se propagan las ondas ssmicas superficiales. Actividad N 3. En relacin a la Atmsfera responde las siguientes preguntas. a) En qu capa atmosfrica tienen lugar los fenmenos meteorolgicos? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ b) En qu capa tiene ms densidad el aire? Por qu? _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ c) Por qu parte del aire de la atmsfera se escapa hacia el espacio en la exosfera? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ d) En qu capa se producen las temperaturas ms bajas? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ e) Qu capa permite las emisiones de televisin? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



f) Qu es una estrella fugaz? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ g) En qu consiste el efecto invernadero? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ h) Cules son los principales focos de contaminacin ambiental? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



Actividad N 4. En relacin a la Hidrsfera responde las siguientes preguntas. a) Por qu las temperaturas en la costa son menos extremadas que en el interior? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ b) Por qu los cubitos de hielo flotan sobre el agua de un vaso? Qu cambio de estado se est produciendo en ese caso? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ c) Busca en un diccionario las definiciones de cauce y caudal. Por qu los torrentes tienen un cauce fijo pero no as su caudal? ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ d) Busca y describe situaciones reales en las que se produzcan cambios de estado del agua. Ejemplo: los cubitos de hielo. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________



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Guia Historia 7basico Semana42 La Tierra Morada de l Ser Humano Dic. 2012

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