Earth Science Lesson 1

What is the Earth's inner core made of?

• Granite

• Basalt

• Silicates

• Iron and nickel

How do tectonic plates move?

• By wind

• Due to magnetic fields

• Due to convection currents in the mantle

• By floating on water

What forms when two plates of continental crust collide?

• Fold mountains

• An island

• A volcano

• A trench

What type of rock is formed from cooled lava?

• Sandstone

• Igneous rock

• Sedimentary rock

• Metamorphic rock

What process turns sediments into stone?

• Weathering

• Melting

• Erosion

• Lithification