Earth Materials

Obsidian, a shiny naturally made volcanic glass, is formed when lava rapidly cools without much time for crystallization to occur. Early civilizations used obsidian to make arrowheads, knives, spear heads, and other weapons and tools. Based on the processes of its formation, obsidian is classified as –

• sedimentary rock

• fossilized rock

• metamorphic rock

• igneous rock

Some students use an apple to represent the Earth. What is the best reason to use an apple for this comparison?

• The flesh of an apple is made of the same material all the way through, and the interior of

  the Earth is the same all the way through.

• The seeds of the apple are very light in comparison to the rest of the apple, and the core of

  the Earth is also made of very light matter.

• The stem of the apple comes from the core and the North Pole comes from the Earth’s core.

• The skin of an apple is very thin, and the crust of the Earth is very thin.

There are two types of the Earth's crust; they are _____ and ____.

• A

• B

• C

• D

This rock forms when particles of other rocks are deposited in layers and get binded together.

• Igneous rock

• Metamorphic rock

• Sedimentary rock

• The rock cycle

A rock that is formed deep undergraound where heat and pressure form the rock.

• Igneous rock

• Metamorphic rock

• Sedimentary rock

• The rock cycle

A rock that forms when lava cools and solidifies is called _____

• Igneous rock

• Sedimentary rock

• Metamorphic rock

• The rock cycle

___________________ is made up of rock, molten rock, soil, and sediments.

• Hydrosphere

• Biosphere

• Atmosphere

• Geosphere

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

This cycle shows how rocks are created and broken down on and within Earth's crust.

• Water Cycle

• Rock Cycle

• Carbon Cycle

• Nitrogen Cycle

Tags

NGSS.MS-ESS2-3

Earth's rocks change from one type to another in a cycle called __________

• Earth's rocks process

• The sedimentary rock cycle

• The rock cyle

• The igneous rock cycle

What are the three types of rocks?

• Igneous, metamorphic, sedimentary

• Igneous, metamorphic, sand

• Igneous, magma, sedimentary

• Lava, metamorphic, sedimentary