Earth structure quiz

📚 Quick Study Guide

• 🔥 Crust: The outermost layer, divided into oceanic and continental crust. It's relatively thin and brittle.
• ⛰️ Mantle: The thickest layer, comprising about 84% of Earth's volume. It's mostly solid but has areas of plasticity.
• 🌡️ Outer Core: A liquid layer made mostly of iron and nickel. Its movement generates Earth's magnetic field.
• 🔩 Inner Core: A solid sphere made of iron and nickel, under immense pressure.
• 🌊 Lithosphere: The rigid outer layer composed of the crust and the uppermost part of the mantle.
• 🌋 Asthenosphere: A highly viscous, mechanically weak and ductile region of the upper mantle located just below the lithosphere.
• 🧭 Earth's magnetic field is generated by the movement of liquid iron in the Earth's outer core.

Practice Quiz

1. What is the outermost layer of the Earth called?
   1. Crust
   2. Mantle
   3. Outer Core
   4. Inner Core
2. Which layer of the Earth is primarily liquid?
   1. Crust
   2. Mantle
   3. Outer Core
   4. Inner Core
3. What is the approximate percentage of Earth's volume taken up by the mantle?
   1. 24%
   2. 54%
   3. 84%
   4. 94%
4. Which two elements primarily make up the Earth's core?
   1. Silicon and Oxygen
   2. Iron and Nickel
   3. Aluminum and Magnesium
   4. Potassium and Calcium
5. Which layer is known for its plasticity and allows the movement of tectonic plates?
   1. Lithosphere
   2. Asthenosphere
   3. Mesosphere
   4. Exosphere
6. What is the primary cause of Earth's magnetic field?
   1. Radioactive decay in the mantle
   2. Gravitational pull of the moon
   3. Movement of liquid iron in the outer core
   4. Pressure from the inner core
7. The lithosphere is composed of which two layers?
   1. Crust and Outer Mantle
   2. Crust and Uppermost Mantle
   3. Mantle and Outer Core
   4. Outer Core and Inner Core