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7/31/2019 O Universo - revises - CFQ - 7. ano
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Cincias Fsico-qumicas O Universo7. ano
Nome:____________________________________________________________Data: __________
1. A astronomia a cincia que estuda os astros que existem no Universo.Que tipos de astros conheces?
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2. A que fenmeno se deve o facto de alguns corpos celestes serem luminosos?R:______________________________________________________________________________
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3. Ptolomeu no Sc. II e Coprnico no Sc. XVI tinham concepes diferentes sobre o Universo.Compara os respectivos modelos.
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7/31/2019 O Universo - revises - CFQ - 7. ano
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4. Observa as seguintes figuras:
4.1. Que corpos celestes esto representados nas figuras?R:___________________________________________________________________________
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4.2. Qual a diferena fundamental entre o astro representado na Fig. 1 e o astro representado nafig. 2.
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4.3. O corpo representado na Fig.3 pode ser dividido em trs partes. Identifica-as.R:___________________________________________________________________________
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5. As galxias podem apresentar uma forma elptica, em espiral, ou no terem uma forma definida.Observas as figuras:
5.1. O que uma galxia?R:___________________________________________________________________________
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5.2. Classifica quanto forma cada uma das galxias representadas.R:___________________________________________________________________________
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5.3. Identifica o nome e a forma da nossa galxia.R:___________________________________________________________________________
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7/31/2019 O Universo - revises - CFQ - 7. ano
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6. Por que razo foi to importante, para a evoluo da Fsica, a luneta astronmica construda porgalileu no sculo XVII?
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7. Faz a correspondncia correcta entre as letras A, B, C, D, E e F e os nmeros 1, 2, 3, 4, 5 e 6.A. Teoria heliocntrica do Universo 1. Ptolomeu
B. Teoria geocntrica do Universo 2. Coprnico
C. Teoria da grande exploso inicial do Universo. 3. Galileu
D. Luneta astronmica 4. Newton
E. Lei de gravitao Universal 5. Kepler
F. rbitas elpticas 6. Big-Bang
8.O dimetro da nossa galxia de
20107,7
m.Determina esta distncia em:
8.1. Unidades Astronmicas (UA).
8.2. Anos-luz (a.l.).
7/31/2019 O Universo - revises - CFQ - 7. ano
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8.3. Parsec (pc).
Bom trabalho!