Social Studies & Arts Guide 2° April

What was the state of most of the planet when it was formed around 4.5 billion years ago?

• Solid rock

• Molten rock

• Ice

• Gas

What phenomenon is caused by the sudden release of energy accumulated within the earth’s crust?

• Volcanoes

• Earthquakes

• Geysers

• Mountain formation

What causes geysers and hot springs to surface?

• Cooling of the earth

• Hot rock heating water underground

• Movement of tectonic plates

• Folding of the earth's crust

What is the result of the earth's crust folding?

• Volcanoes

• Earthquakes

• Mountain formation

• Geysers

What is the term for the movement of tectonic plates and continents?

• Volcanoes

• Earthquakes

• Continental drift

• Geysers

What is the outermost layer of the Earth called?

• Mantle

• Core

• Crust

• Inner Core

Which layer of the Earth is composed mostly of peridotite?

• Crust

• Mantle

• Core

• Oceanic Crust

What is the thickness range of the continental crust?

• 10 to 20 km

• 35 to 75 km

• 100 to 200 km

• 5 to 15 km

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

• 80% nickel and 20% iron

• 80% iron and 10% nickel

• 70% iron and 30% nickel

• 90% nickel and 10% iron

Which part of the Earth's core is solid due to high pressure and depth?

• Outer Core

• Inner Core

• Mantle

• Crust