Question

ead the passage and answer the following question(s).

Analyzing Earth's Layers

Earth is made up of four layers: the inner core, the outer core, the mantle, and the crust. The image shows a graph of the thickness of each of Earth's layers next to a diagram of Earth.



The table contains information about Earth's layers.

Layer What it is made of Temperature
Crust Solid rocks and minerals 200-400 °C
Mantle Solid rocks, liquid rocks, and minerals 1,000-3,700 °C
Outer core Liquid metals 4,500-5,500 °C
Inner core Solid metals 6,000 °C
Resize Columns
Question 4.



The deepest hole ever drilled into Earth's surface is around 12 kilometers deep. Which of Earth's layers does the deepest hole reach?


the crust


the inner core


the outer core


the mantle

Question 5.



The following question has two parts. First, answer Part A. Then, answer Part B.

Part A:

Scientists analyzed a layer of Earth and determined it was solid, magnetic, and very hot. Which layer of Earth did the scientists most likely analyze?


the crust


the mantle


the outer core


the inner core


Part B:

Which best supports the choice from Part A?


The crust is closest to the surface, which means it is the hottest.


The mantle contains minerals, which means it is solid.


The outer core is liquid metal, which means it is very hot.


The inner core is solid metal, which means it has magnetic properties.

Answer 1

Question 4: the crust

Reason: The deepest hole (~12 km) is well within the crust (crust thickness is about 5–70 km).

Question 5 — Part A: the inner core

Question 5 — Part B: The inner core is solid metal, which means it has magnetic properties.

Reason: The inner core is described as solid metals and very hot (≈6000 °C), and the supporting statement correctly links being solid metal to magnetic properties.