plate tectonic

how many layers are in the earth

• 5
• 6
• 7
• 4

whats the center of the earth called

• core
• middle
• nucleus
• heart

transfer of heat energy by direct contact

• Convection
• Radiation
• Conduction
• Reflection

when continents were once together but grew apart over time

• Continental shift
• Continental slide
• Continental drift
• Continental glide

ocean floors move like conveyor belts

• Earth's rotation
• Plate tectonics
• Global warming
• Moon phases

pillow shaped rocks

• Tectonic plate movements
• Volcanic eruptions
• molten material

• Sedimentary rock formation

convection currents flow in the

the ocean floor sinks into deep, underwater canyons called

• caves
• gorges
• deep ocean trenches

• chasms

what is the lithosphere

• The lithosphere is a layer of the ocean
• The lithosphere is a type of rock formation
• The lithosphere is the rigid outer layer of the Earth.
• The lithosphere is a layer of the atmosphere

plates float on top of the what?

• sand
• air
• oil
• asthenosphere