8th science ch. 3 Lesson 3-4

Which of the following are used to describe rocks?

• minerals they contain

• their color

• their texture

• their origin

• A rock is _________ according to the processes by which it’s made.

• classified

• designed

• categorized

• labeled

• What are the classifications of rocks?

• igneous

• sedimentary

• metamorphic

• plasmic

Forms from molten rock (lava/magma) cooling below (intrusive) or above (extrusive) the surface of the Earth

• igneous rock

• metamorphic rock

• sedimentary rock

• Forms by weathering, erosion, deposition, compaction, and cementation close to the surface of Earth’s crust

• igneous rock

• metamorphic rock

• sedimentary rock

•  Which type of rocks tell us what the Earth's surface was like in the geologic past because they

• contain fossils that tell us about the animals and plants or show the climate in an area?

• sedimentary rocks

• metamorphic rocks

• igneous rocks

What breaks down or dissolves and carries away rocks exposed

at the surface creating particles that eventually become hard rock?

• wind

• rain

• snow

• ice

• sun

Which are reasons sedimentary rocks are important?

• tell us the geological past because they contain fossils

• contain drinking water

• have oil and gas to run cars and heat homes

• reveal information about the composition, temperature, and pressure of the lower crust and upper mantle

molten rock (lava/magma) cooling below the surface of the Earth

• intrusive

• extrusive

molten rock (lava/magma) cooling above the surface of the Earth

• intrusive

• extrusive