Understanding Earth's Structure and Plate Tectonics

What is the hottest part of the Earth?

• The mantle

• The outer core

• The crust

• The inner core

What is the Earth's mantle made of?

• Liquid iron and nickel

• Semi-molten rock called magma

• Gaseous elements

• Solid rock

What is the thickness range of the Earth's crust?

• 2000 - 3000 km

• 0 - 60 km

• 100 - 200 km

• 500 - 1000 km

What are tectonic plates?

• Large bodies of water

• Slow-moving sections of the Earth's crust

• Layers of the atmosphere

• Types of rocks

What is slab pull?

• The movement of magma in the mantle

• The rising of hot air in the atmosphere

• When older, denser plates sink into the mantle

• The process of forming new crust

What causes tectonic plates to move?

• Wind currents

• Magnetic fields

• Slab pull and ridge push

• Ocean waves

What is the outer core made of?

• Molten lava

• Gaseous elements

• Solid rock

• Liquid iron and nickel

What is the theory of plate tectonics?

• The movement of the Earth's plates and activity inside the Earth

• The formation of mountains

• The cycle of weather patterns

• The study of ocean currents

What is ridge push?

• The movement of air currents

• The erosion of mountains

• The sinking of tectonic plates

• The rising of new crust at divergent plate margins

What is the Earth's crust made of?

• Gaseous elements

• Liquid magma

• Molten iron

• Solid rock