Sedimentary rocks

Detrital rocks are ____.

made from broken fragments of other rocks

The figure above shows that sedimentary rocks are changed to sediment by ____.

weathering and erosion

A kind of sedimentary rock formed from plant material over a long period of time is __________.

coal

Sediments in sedimentary rocks are often ____.

held together with natural cements

a kind of chemical sedimentary rock

limestone

Sedimentary rocks formed from the remains of once-living things are ____.

organic

A detrital rock is named according to ____.

the shape and size of the sediments

The process in which minerals hold sediment together, like glue, making a detrital sedimentary rock.

cementation

The process in which pressure from the upper layers of sediment pushes down on the lower layers, causing the sediments to stick together and form solid rock.

compaction

Sedimentary rocks form because of all of the following EXCEPT ____.

crystals solidifying from magma

Sandstone is a(n) ____ sedimentary rock.

detrital

Sedimentary rocks formed from broken fragments of other rocks are ____.

detrital

A detrital rock is named according to the color of the sediments.

false

Sedimentary rocks are ____.

formed when loose materials become pressed or cemented together or when minerals form from solutions