rochas e o testemunho da actividade da terra - cn - 7.º ano

7/27/2019 Rochas e o testemunho da actividade da Terra - CN - 7. ano

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Cincias da Natureza Rochas e o testemunho da actividade da Terra7. ano

Nome:____________________________________________________________Data: __________

1. Define:1.1. rochas magmticas.R:___________________________________________________________________________

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1.2. rochas sedimentares.R:___________________________________________________________________________

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1.3. rochas metamrficas.R:___________________________________________________________________________

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1.4. mineral.R:___________________________________________________________________________

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2. Em que caractersticas dos minerais so baseados os mtodos aplicados para os distinguir?Caracteriza cada uma delas.

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3. Refere trs minerais que conheas.R:______________________________________________________________________________

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4. Refere o nome da escala usada na determinao da dureza dos minerais.R:______________________________________________________________________________

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5. Resolve o crucigrama seguinte.

1. M

2. I

3. N

4. E

5. R

6. A

7. L

1 - o mineral mais duro que existe.

2 - uma chave usada na identificao dos minerais.

3 - So os principais constituintes das rochas.

4 - uma propriedade dos minerais frequentemente usada na sua identificao.

5 - formado pela natureza.

6 - So os principais constituintes da crusta.

7 - A dureza deste mineral 1.

6. Existem na Natureza mltiplos minerais.6.1. Completa a chave dicotmica da pgina seguinte, classificando os minerais das figuras

seguintes.


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Chave dicotmica

Mineral com brilho metlico

Mineral sem brilho metlico

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1

1 Mineral opaco

Mineral transparente

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2

2 Mineral de cor castanha

Mineral com outras cores

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3

3 Mineral cor-de-rosa

Mineral azul

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Bom trabalho!

rochas e o testemunho da actividade da terra - cn - 7.º ano

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