Understanding Earth's Layers

Why is it impossible to dig through the Earth to reach the other side?

• The Earth's crust is too thick.

• There is too much water in the way.

• The core is too hot and inaccessible.

• The Earth is too large to dig through.

What are the three main layers of the geosphere?

• Mantle, Crust, Atmosphere

• Hydrosphere, Atmosphere, Crust

• Core, Hydrosphere, Atmosphere

• Core, Mantle, Crust

What is the composition of the Earth's core?

• Molten lava

• Metals

• Solid rock

• Water

Which layer of the geosphere is responsible for tectonic plate movement?

• The inner core

• The outer core

• The crust

• The mantle

What is the main difference between the oceanic crust and the continental crust?

• Oceanic crust is made of water.

• Oceanic crust is thicker than continental crust.

• Oceanic crust is hotter than continental crust.

• Oceanic crust forms the ocean floors, while continental crust forms landmasses.

What percentage of the Earth's surface is covered by water?

• 80%

• 50%

• 60%

• 70%

In which states can water be found in the hydrosphere?

• Liquid and gas only

• Gas only

• Solid and liquid only

• Solid, liquid, and gas

Which layer of the atmosphere is closest to the Earth?

• Stratosphere

• Mesosphere

• Troposphere

• Exosphere

What is one of the primary functions of the Earth's atmosphere?

• To support tectonic plate movement

• To store minerals

• To regulate the Earth's temperature

• To provide a habitat for marine life

How does the atmosphere protect the Earth from meteorites?

• By reflecting them back into space

• By absorbing them into the hydrosphere

• By burning them up before they reach the surface

• By deflecting them with magnetic fields