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O que é escala cartográfica e sua importância; Os dois tipos de escala: numérica e gráfica; Como interpretar e usar a escala numérica; Como interpretar e usar a escala gráfica; Escalas grande e pequena e seu uso no dia a dia

Escala Cartográfica: Gráfica e Numérica

Geografia

Escala Cartográfica: Gráfica e Numérica

Entenda como mapas representam o mundo real.

Sumário

• O que é escala cartográfica e sua importância

• Os dois tipos de escala: numérica e gráfica

• Como interpretar e usar a escala numérica

• Como interpretar e usar a escala gráfica

• Escalas grande e pequena e seu uso no dia a dia

O que é Escala Cartográfica?

A escala cartográfica é a relação matemática entre a distância real de um lugar e sua representação reduzida em um mapa ou planta. Ela nos permite entender quantas vezes o espaço foi diminuído para caber no papel.

Escala cartográfica: medindo distâncias em mapas.

Por que a Escala é Essencial?

A escala é crucial para representar grandes áreas, como o Brasil ou seu bairro, em um espaço limitado. Ela garante que as proporções e distâncias relativas sejam mantidas, tornando o mapa útil e preciso.

Brasil em verde, Texas em laranja: comparação de áreas.

A Proporção: Realidade x Mapa

A escala é a proporção que indica quantas vezes a realidade foi reduzida para caber no mapa. Ela garante a precisão e é essencial em toda representação cartográfica.

Escala cartográfica: proporção entre realidade e mapa.

Escalas cartográficas: numérica e gráfica, com exemplos visuais.

Dois Tipos de Escala

• Escala Numérica: Expressa por números (fração ou proporção).

• Ex: 1:100.000 (1 cm no mapa = 1 km real).

• Escala Gráfica: Representada por uma barra visual.

• Mede distâncias diretamente com régua no mapa.

Escala Numérica: A Linguagem dos Números

A escala numérica expressa a relação entre a distância no mapa e a distância real. É apresentada como fração (1/50.000) ou razão (1:50.000). O numerador (1) é a medida no mapa e o denominador, a medida real.

Mapas, bússolas, réguas: ferramentas e escalas cartográficas essenciais.

Desvendando a Escala Numérica

Do Mapa para a Realidade

A escala numérica é expressa como uma fração, por exemplo, 1:25.000. O primeiro número (1) representa uma unidade de medida no mapa. O segundo número (25.000) indica a mesma unidade na realidade.

Se a escala é 1:25.000, 1 cm no mapa equivale a 25.000 cm no terreno. Para facilitar, 25.000 cm são 250 metros. Assim, cada 1 cm no mapa representa 250 metros reais.

Mapas e ferramentas: escala gráfica, numérica e conversão de unidades.

Unidades de Medida e Conversão

• Converta unidades para usar a escala numérica.

• Exemplo: 1 metro (m) = 100 centímetros (cm).

• Exemplo: 1 quilômetro (km) = 100.000 cm.

• Padronize as unidades para cálculos corretos.

Calculando Distâncias Reais

Para calcular a distância real, multiplique a distância no mapa pelo denominador da escala. Por exemplo, 5 cm em um mapa 1:2.000.000 resultam em 10.000.000 cm. Isso equivale a 100 km na vida real!

Escala de distância em quilômetros e milhas.

Escala Cartográfica: Gráfica e Numérica

O que é escala cartográfica e sua importância; Os dois tipos de escala: numérica e gráfica; Como interpretar e usar a escala numérica; Como interpretar e usar a escala gráfica; Escalas grande e pequena e seu uso no dia a dia

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