Earth's Structure and Composition Worksheet

There are two layers in the crust.

• Inner and outer crust

• Continental and oceanic crust

• Surface and oceanic crust

• Mantle and core

Which element is found in both mantle and crust?

• Silica

• Magnesium

• Aluminium

• Iron

Which of these minerals are found in the core of the earth?

• Iron - magnesium

• Magnesium - nickel

• Aluminium - iron

• Iron - nickel

The inner core is in which state?

• Gaseous

• Solid

• Liquid

• Semi-solid

The outer core is made up of

• Iron

• Gold

• Hydrogen

The layer of the earth on which we live...

• Mantle

• Core

• Crust

• Continental crust

Which seismic waves can travel through liquid medium?

• Primary waves

• Secondary waves

• Surface waves

• Oceanic waves

The density of various materials is not the same in the interior of the earth.

• Right

• Wrong

The core of the earth’s interior is made up of hard rocks.

• Wrong - The core of the earth’s interior is made up of elements, viz. iron and nickel.

  
  

• Right

Secondary waves cannot pass through outer core.

• Right.

• Wrong.

• Cannot be determined.

• Depends on the situation.