Which of the following parth of the earth is made up of molten iron ?

Options

A. mantle
B. inner core
C. outer core
D. crust

Answer

To solve the question "Which of the following parts of the Earth is made up of molten iron?" we will follow these steps:

### Step 1: Understand the Structure of the Earth
The Earth is composed of several layers: the crust, mantle, outer core, and inner core. Each of these layers has different properties and compositions.

### Step 2: Identify the Composition of Each Layer
- **Crust**: The outermost layer, composed mainly of solid rocks and minerals.
- **Mantle**: Located beneath the crust, it is mostly solid but can flow slowly over geological time.
- **Outer Core**: This layer is beneath the mantle and is composed of molten (liquid) iron and nickel.
- **Inner Core**: The innermost layer, which is solid due to the immense pressure, despite being extremely hot.

### Step 3: Determine Which Layer Contains Molten Iron
From our identification:
- The **outer core** is the layer that contains molten iron. The inner core, while very hot, is solid, and the crust and mantle do not contain molten iron.

### Step 4: Select the Correct Answer
Based on our analysis, the correct answer is the **outer core**.

### Final Answer:
The part of the Earth that is made up of molten iron is the **outer core**.

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