Understanding the earth

The upper most layer of the earth

• Core

• Crust

• Mantle

Plutonic rocks are also called as

• Extrusive

• Intrusive

• Metamorphic

• Sedimentary

The world 'ignis' means

• Water

• Fire

• Heat

• Pressure

Sial doesn't consist of silica and alumminum

• True

• False

Igneous rocks are also known as

• Secondary rocks

• Primary rocks

• Volcanic rocks

• Plutonic rocks

Metamorphic means Change to

• True

• False

The Average thickness of mantle is

• 2900

• 6370

• 300

• 1000

Beno Gutenberg is a ________ geophysicist

• Itailan

• German

• American

• Others

Core is also known as nife

• True

• False

_______ is natural mass of mineral

• Earth

• Plant

• Rock

• Air