Earth Structure and PT Theory

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

• 2-100km

• 100-200km

• 200-300km

• 300-400km

Which layer of the Earth is known as the Lithosphere?

• Crust and Top of the Upper Mantle

• Outer Core

• Inner Core

• Middle and Lower Mantle

What is the state of matter of the Outer Core?

• Solid

• Liquid

• Gas

• Plasma

What is the temperature of the Inner Core?

• 1,200°C

• 5,000°C

• 6,000°C

• 2,700°C

Which type of crust is denser?

• Continental Crust

• Oceanic Crust

• Both are equally dense

• Neither is dense

What is the density of the Continental Crust?

• 2.7g/cm³

• 3.0g/cm³

• 1.5g/cm³

• 4.0g/cm³

Who was the first person to propose the theory of continental drift?

• Charles Darwin

• Alfred Wegener

• Isaac Newton

• Albert Einstein

What is the name of the supercontinent that Alfred Wegener proposed existed 200 million years ago?

• Gondwana

• Laurasia

• Pangaea

• Atlantis

Which of the following is NOT evidence used for the Continental Drift Theory?

• Jigsaw fit

• Plant fossils

• Sea-floor spreading

• Animal fossils

What does the Plate Tectonic Theory explain?

• The formation of mountains

• The movement and interaction of Earth's lithospheric plates

• The origin of life on Earth

• The cycle of water on Earth