earths interior

Which area of the Earth is least dense ?

• Outer core

• inner core

• mantle

• crust

Which layer of earth is molten?

• inner core
• outer core
• crust
• lithosphere

Which layer is plastic and has the consistency of silly putty allowing movement?

• asthenosphere
• lithosphere
• mesosphere
• crust

How do scientists know the Earth has layers?

• Drilling into the mantle

• Volcanoes

• Seismic waves data

• ocean waves

What process is the pictures showing?

• comprehension

• mantle

• Earth's layers

• convection

• melting

What processes causes tectonic plates move?

• mountain building

• earthquakes

• convection currents

• water cycle

• subduction zones

What evidence exists that proves that Earth has layers?

• They can be seen from special locations on the Earth

• observations of earthquakes and buildings swaying

• seismic data from earthquakes on the other side of the Earth

• tsunami data from other countries and the impact on the land

• rock samples from deep layers

What is the thickest layer of the Earth?

• the crust
• the mantle
• the outer core
• the inner core

What describes the outer core?

• solid
• liquid
• viscous
• gas

What layer is a semisolid and acts like a plastic?

• Lithosphere
• Mantle
• Asthenosphere
• crust