Structure of the Earth worksheet for identifying and labeling its different layers.

The image is a worksheet titled "Structure of the Earth", asking students to identify and label the different layers of the Earth using a diagram. The diagram shows a cross-section of the Earth with five labeled lines pointing to different layers, and there is a word box at the bottom with the following terms:

- Crust
- Upper mantle
- Lower mantle
- Outer core
- Inner core

Step-by-step Solution:

We need to match each layer in the diagram (from outermost to innermost) with the correct term from the word box.

1. Outermost layer – This is the thin, solid outer layer of the Earth, which includes the continents and ocean floors.
→ Crust

2. Just below the crust – This is the thick, rocky layer that lies beneath the crust. It is divided into upper and lower parts, but here it's shown as two distinct sections.
→ The first layer beneath the crust is the Upper mantle

3. Below the upper mantle – This is the deeper part of the mantle, denser and hotter than the upper mantle.
→ Lower mantle

4. Next layer inward – This is a liquid layer made mostly of iron and nickel.
→ Outer core

5. Innermost layer – This is a solid ball at the center of the Earth, also made of iron and nickel, but under immense pressure.
→ Inner core

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Final Answer (Labeling from top to bottom):

1. Crust
2. Upper mantle
3. Lower mantle
4. Outer core
5. Inner core

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Explanation:

The Earth is composed of five main layers, arranged from the surface inward:
- Crust: Thin, solid outer layer.
- Upper Mantle: Semi-solid, rigid rock; part of the lithosphere.
- Lower Mantle: Hotter and more viscous than the upper mantle.
- Outer Core: Liquid layer responsible for Earth’s magnetic field.
- Inner Core: Solid, extremely hot and dense metal sphere.

These layers are defined by differences in composition, physical state, and density.

✔ So, fill in the blanks from top to bottom as:
1. Crust
2. Upper mantle
3. Lower mantle
4. Outer core
5. Inner core

This completes the labeling of the Earth’s structure!