Geography Chapter 2

Comets are ________.

• spheres of ice and dust

• giant balls of fire

• rocky planets

• rings of gas

Asteroids are ________.

• large chunks of rocky material

• small balls of gas

• pieces of ice and dust

• burning balls of fire

The core of the Earth is made of ________.

• iron and nickel

• copper and zinc

• silver and gold

• aluminum and tin

The mantle is composed of ________.

• magma

• ice

• sand

• water

The crust is a ________.

• thin layer of rock

• thick layer of metal

• liquid layer of magma

• dense core of iron

The atmosphere is a ________.

• layer of gases

• solid surface

• liquid ocean

• metallic core

The lithosphere includes ________.

• crust and upper mantle

• core and mantle

• crust and core

• mantle and inner core

The hydrosphere refers to ________.

• water elements of earth

• air elements of earth

• land elements of earth

• fire elements of earth

The biosphere is where ________.

• plants and animals live

• rocks are formed

• water evaporates

• volcanoes erupt

According to the Continental Drift Theory, Earth was once a ________.

• supercontinent that divided and slowly drifted apart over millions of years

• collection of small islands scattered across the oceans

• series of separate continents from the beginning

• giant ocean with no landmasses