IGNEOUS
What are igneous rocks made from?
A) Melted rock that cools
B) Sand and mud
C) Dead plants and animals
A) Melted rock that cools
Metamorphic rocks form when rocks are changed by:
A) Heat and pressure
B) Freezing water
C) Wind and rain
A) Heat and pressure
Sedimentary rocks form when sediments:
A) Melt
B) Stay dry
C) Compact and cement together
C) Compact and cement together
What is the main mineral that makes up limestone and marble?
A) Quartz
B) Calcite
C) Feldspar
B) Calcite
Which glassy black volcanic rock has no visible crystals?
A) Basalt
B) Obsidian
C) Granite
B) Obsidian
Which igneous rock often has air bubbles and can float on water?
A) Granite
B) Pumice
C) Basalt
B) Pumice
Which rock was once limestone before it changed into a metamorphic rock?
A) Quartzite
B) Marble
C) Granite
B) Marble
Which sedimentary rock is made from tiny bits of shells and ocean organisms?
A) Limestone
B) Basalt
C) Schist
A) Limestone
Granite is mostly made of three minerals. Which one is commonly pink?
A) Feldspar
B) Calcite
C) Mica
A) Feldspar
Which rock forms when gas bubbles get trapped as lava cools really fast, making it super light?
A) Pumice
B) Shale
C) Quartzite
A) Pumice
Slow cooling magma forms crystals that are:
A) Big
B) Small
C) No crystals at all
A) Big
Metamorphic rocks with layers or bands are called:
A) Igneous
B) Foliated
C) Sedimentary
B) Foliated
What is the name for layers in sedimentary rocks?
A) Stripes
B) Fossils
C) Strata
C) Strata
Which shiny, flaky mineral is commonly found in slate and schist?
A) Mica
B) Dolomite
C) Pyrite
A) Mica
Which rock is made of rounded pebbles cemented together?
A) Sandstone
B) Conglomerate
C) Slate
B) Conglomerate
Where do extrusive igneous rocks form?
A) Deep inside Earth
B) On or near Earth’s surface
C) Underwater caves
B) On or near Earth’s surface
Which of these is a foliated metamorphic rock?
A) Slate
B) Obsidian
C) Sandstone
A) Slate
Which process moves sediments from one place to another?
A) Weathering
B) Erosion
C) Melting
B) Erosion
Quartzite forms when sandstone recrystallizes. What mineral are both mainly made of?
A) Quartz
B) Feldspar
C) Hornblende
A) Quartz
Which rock has banded layers, often shiny, and forms deep inside mountain roots?
A) Marble
B) Gneiss
C) Limestone
B) Gneiss
Which pair correctly matches igneous rock type AND texture?
A) Basalt — intrusive, coarse-grained
B) Granite — extrusive, glassy
C) Obsidian — extrusive, glassy
C) Obsidian — extrusive, glassy
Which sequence shows metamorphism from lowest → highest grade?
A) Schist → Slate → Gneiss
B) Slate → Schist → Gneiss
C) Gneiss → Slate → Marble
B) Slate → Schist → Gneiss
Which list shows organic, clastic, and chemical sedimentary rocks in that order?
A) Sandstone — Shale — Coal
B) Coal — Sandstone — Rock Salt
C) Rock Salt — Coal — Sandstone
B) Coal — Sandstone — Rock Salt
Gneiss has light and dark bands. The light bands are rich in ___, while the dark bands contain ___:
A) Mica & Calcite
B) Feldspar & Quartz
C) Feldspar/Quartz & Mica/Hornblende
C) Feldspar/Quartz & Mica/Hornblende
Which rock forms from contact metamorphism near magma and may contain garnet crystals?
A) Hornfels
B) Chert
C) Coal
A) Hornfels