Sedimentary & Igneous Rocks

Sandstone is formed from t he natural cementation of....

• sand
• silt
• clay
• calcite 

Which is an example of a sedimentary rock that has formed from compacted plant remains

• conglomerate
• rock salt
• siltstone
• bituminous coal

Which rock is made up of angular fragments of rock held together by a natural cement

• breccia
• scoria
• granite
• quartzite

Which would most likely cause molten rock material to become a glassy igneous rock?

• cooling over a long period of time
• cooling under high pressure
• cooling on the earth's surface 
• cooling at great depth within the earth

According to ESRT's, which rock is of felsic composition, low density, light in color, and coarse grained?

• rhyolite
• basalt
• granite
• gabbro

How is crystal size related to the rate a molten material cools

• the faster it cools the smaller the crystal
• the faster it cools the larger the crystal
• the slower it cools  the smaller the crystal

Glassy textured rocks cool slowly

• True
• False

Basalt is a dark colored rock

• True
• False

Fine grained rocks have visible crystals 

• True
• False

Intrusive rocks are coarse grained

• True
• False