The layer of gases surrounding the Earth

• Hydrosphere
• Cryosphere
• Oxyosphere
• Atmosphere

The liquid water on Earth

• hydrosphere
• cryosphere
• thermosphere
• aquasphere

Earth’s entire solid or rocky body

• Hydrosphere
• Asthenosphere
• Geosphere
• Mesosphere

All of the living things on the Earth

• Biosphere
• Atmosphere
• The continents
• Hydrosphere

All of the frozen water on the Earth

• Hydrosphere
• Thermosphere
• Cryosphere
• Polar ice caps

When the early Earth began to have molten rock, layers formed because of their

• shapes.
• densities.
• water.
• No layers formed

When layers of the Earth formed, the least dense layer..

• sank to the bottom.
• mixed with the other layers.
• floated to the top.

Which layer of the Earth is the most dense?

• Crust
• Inner core
• Mantle
• Outer core

Which layer of the Earth is the least dense?

• Crust
• Inner core
• Mantle
• Outer core

Which portion of the crust is thicker?

• Continental
• Oceanic