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What is a sedimentary rock?
A rock formed by heat and pressure
A rock formed from lava
A rock formed from sediments
What are sediments?
Small pieces of rock and other materials
Hot flowing lava
Melted rock inside Earth
Which process breaks rocks into smaller pieces?
Eruption
Melting
Weathering
What process moves sediments from one place to another?
Condensation
Crystallization
Erosion
Where do sediments usually settle?
Deep inside the mantle
Inside volcanoes
At the bottom of rivers seas or lakes
What happens to sediments after they settle?
They form layers
They turn into magma
They melt
What is deposition?
Dropping of sediments
Eating of rocks
Burning of rocks
Which force presses sediment layers together?
Sound
Pressure
Light
What is compaction?
Sediments being pressed together
Sediments breaking apart
Sediments melting
What helps glue sediments together?
Freezing
Evaporation
Cementation
What is cementation?
Sediments turning to lava
Water breaking rocks
Minerals sticking sediments together
Which material often acts as natural cement?
Air
Plastic
Minerals
How are sedimentary rocks usually arranged?
In bubbles
In crystals
In layers
Which rock is a sedimentary rock?
Basalt
Granite
Sandstone
Which sedimentary rock forms from sand?
Obsidian
Sandstone
Marble
Which sedimentary rock forms from shells of sea animals?
Limestone
Gabbro
Pumice
