Rocks (Science 4.4.1)

Rocks are described as the _____ part of the Earth.

• liquid

• solid

• gas

• molten

Sedimentary rocks are formed when _____ are deposited along riverbanks and piled into layers.

• lava

• sediments

• magma pockets

• crystals

Igneous rocks originate from erupting _____ .

• earthquakes

• volcanoes

• glaciers

• floods

Metamorphic rocks form when igneous and sedimentary rocks are exposed to extreme __________.

• wind and water

• cold and erosion

• magnet and electricity

• heat and pressure

About _____ of the earth’s upper crust is made up of igneous rock.

• 50%

• 75%

• 95%

• 100%

Extrusive igneous rocks typically have _____ crystal growth due to rapid cooling.

• large

• no or fine

• interlocking

• fibrous

Which cooling duration applies to extrusive igneous rock?

• seconds to months

• thousands of years

• millions of years

• instantaneously only

Intrusive igneous rocks cool ________ than extrusive ones.

• faster

• slower

• at the same rate

• only near the surface

Coarse-grained texture is characteristic of _____ igneous rocks.

• extrusive

• intrusive

• volcanic

• organic

Granite, an example of igneous rock, is used to make _________.

• hammer

• chisel

• knife

• mortar and pestle