What’s Under Your Feet

The video explores the Earth's formation, describing it as a layered structure similar to a jawbreaker. It details the core, mantle, and crust, explaining their composition and characteristics. The core is divided into a solid inner core and a liquid outer core, both composed of iron and nickel. The mantle, the thickest layer, is made of molten rock, causing tectonic plate movement. The crust, the Earth's outermost layer, is thin and solid. The video also covers the three types of rocks: igneous, sedimentary, and metamorphic, explaining their formation processes and characteristics.

What is the composition of the Earth's inner core?

• Solid iron and nickel

• Liquid iron and nickel

• Solid rock

• Molten rock

How thick is the Earth's crust under the continents?

• 3 to 5 miles

• 50 miles

• 10 miles

• 25 miles

What causes the plates of the Earth to shift?

• The cooling of the outer core

• The solidification of the inner core

• The flow of molten rock in the mantle

• The erosion of the crust

Which type of rock is formed from the cooling of magma?

• Limestone

• Metamorphic rock

• Igneous rock

• Sedimentary rock

What type of rock is marble classified as?

• Metamorphic rock

• Volcanic rock

• Sedimentary rock

• Igneous rock