The Earth's Structure

What are the three main layers of the Earth?

• outer, middle, and inner

• oceanic, continental, and transitional

• surface, middle, and center

• crust, mantle, and core

Which layer of the Earth is the thinnest?

• outer core

• crust

• mantle

• inner core

What is the Earth's crust made of?

• Solid rocks and minerals

• Metallic elements and compounds

• Gases and water vapor

• Liquid lava and magma

What is the temperature of the Earth's mantle?

• 1000 to 1100 degrees Celsius

• 500 to 900 degrees Celsius

• 100 to 200 degrees Celsius

• 300 to 400 degrees Celsius

What are the two parts of the Earth's core?

• Mantle and crust

• Solid core and liquid core

• Upper core and lower core

• Inner core and outer core

How are earthquakes caused?

• Movement of the moon

• Volcanic eruption

• Global warming

• Sudden release of energy in the Earth's crust

What is the Ring of Fire?

• A type of jewelry worn on the finger

• A popular song by Johnny Cash

• A major area in the basin of the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur

• A fictional place in a fantasy novel

What is the difference between a volcano and a mountain?

• Volcanoes are formed by meteor impacts, while mountains are formed by volcanic eruptions

• Volcanoes are always found underwater, while mountains are always found on land

• Volcanoes are made of ice, while mountains are made of rock

• Volcanoes are formed by the eruption of magma from the Earth's crust, while mountains are formed by the movement of tectonic plates and erosion.

What is magma?

• Molten or semi-molten rock beneath the Earth's surface

• A type of volcanic rock

• A type of cloud formation

• A type of pasta dish

How do scientists study the Earth's interior?

• Drilling into the Earth's core

• Using satellites to take pictures of the Earth's interior

• Seismic waves and geophysical methods

• Measuring the temperature of the Earth's surface