Earth's Structure
Test your knowledge about the structure of the Earth, including its layers, composition, and characteristics.
Questions
Which layer of the Earth is composed primarily of molten rock?
- Crust
- Mantle
- Outer Core
- Inner Core
What is the approximate thickness of the Earth's crust?
- 10-20 km
- 30-40 km
- 50-60 km
- 70-80 km
Which layer of the Earth is responsible for generating the Earth's magnetic field?
- Crust
- Mantle
- Outer Core
- Inner Core
What is the primary composition of the Earth's inner core?
- Iron and Nickel
- Iron and Oxygen
- Iron and Silicon
- Iron and Magnesium
Which layer of the Earth is composed primarily of solid rock?
- Crust
- Mantle
- Outer Core
- Inner Core
What is the approximate thickness of the Earth's mantle?
- 2,900-3,000 km
- 2,700-2,800 km
- 2,500-2,600 km
- 2,300-2,400 km
Which layer of the Earth is responsible for plate tectonics?
- Crust
- Mantle
- Outer Core
- Inner Core
What is the approximate temperature of the Earth's core?
- 5,200-5,500 °C
- 4,800-5,000 °C
- 4,400-4,600 °C
- 4,000-4,200 °C
Which layer of the Earth is composed primarily of gases?
- Crust
- Mantle
- Outer Core
- Atmosphere
What is the approximate thickness of the Earth's atmosphere?
- 10-20 km
- 30-40 km
- 50-60 km
- 100-120 km
Which layer of the Earth is responsible for the Earth's tides?
- Crust
- Mantle
- Outer Core
- Oceans
What is the approximate age of the Earth?
- 4.5-4.6 billion years
- 3.5-3.6 billion years
- 2.5-2.6 billion years
- 1.5-1.6 billion years
Which layer of the Earth is responsible for the Earth's rotation?
- Crust
- Mantle
- Outer Core
- Inner Core
What is the approximate density of the Earth's core?
- 12-13 g/cm³
- 10-11 g/cm³
- 8-9 g/cm³
- 6-7 g/cm³
Which layer of the Earth is responsible for the Earth's gravity?
- Crust
- Mantle
- Outer Core
- Inner Core