The part of the Earth system that contains all of Earth's water is called the 

• atmosphere
• geosphere
• hydroshere
• biosphere

Holes drilled several kilometers into Earth's crust provide direct evidence about Earth's interior in the form of 

• seismic waves 
• rock samples
• liquid iron
• volcanic eruption

What is the correct order (starting from the surface) of Earth's layers?

• crust, outer core, inner core, mantle
• mantle, outer core, inner core, crust
• crust, mantle, outer core, inner core
• outer core, inner core, crust, mantle

The transfer of energy through empty space is called

• conduction
• convection 
• radiation
• subduction

Using data from seismic waves geologists have learned that Earth's interior is made up of many 

• continents
• layers 
• ridges
• trenches

Which of Earth's layers is the thickest?

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

Which part of Earth contains most of it's mass?

• the biosphere
• the geosphere
• the atmosphere
• the hydrosphere

Earth's inner core is 

• a dense ball of solid metal
• a layer of molten metal 
• a layer of hot rock 
• a layer of rock that forms Earth's outer skin

Particles of hot soup rise slowly in a pot simmering on a stove . As the hot soup nears the surface it begins to cool. The cooler soup sinks, forming a constant movement of the soup in the pot is called a(n)

• magnetic field 
• energy system
• convection current
• conduction loop

Which part of Earth contains plates?

• hydrosphere
• lithosphere
• core 
• atmosphere