sedimentary
part of speech
adjective (sedimentary)
meaning for a pupil
1) Sedimentary rock is rock made from layers of sand, mud, shells or tiny bits of other rock that are pressed together over a very long time. tree →
2) Sedimentary means made from sediment, the bits that settle at the bottom of water. tree →
sense in the lessons
In science lessons there are three main types of rock: igneous (from melted rock), sedimentary and metamorphic (changed by heat and pressure). Sandstone, limestone, chalk and shale are sedimentary rocks; fossils are mostly found in them. In the rock cycle, rocks are worn down, carried by rivers and laid down as layers.
examples
- Sandstone is a sedimentary rock. tree →
- Fossils are often found in sedimentary rocks. tree →
- The cliff showed many sedimentary layers. tree →
- Chalk is a soft sedimentary rock made of tiny shells. tree →
- Sedimentary rocks form at the bottom of seas and lakes. tree →
- The oldest layers are at the bottom of sedimentary rock. tree →
note
A science word; no comparative. Related: sediment (the bits), sedimentation (the settling). Sedimentary rocks are often softer and can crumble; igneous rocks like granite are usually harder.
In the corpora
- All rocks belong to three families: igneous, sedimentary and metamorphic.
- Sedimentary rocks form when layers of sand, mud, shells or other bits are buried, pressed and cemented together.
- In undisturbed sedimentary rock, the lowest layers are the oldest.
- Shale and mudstone are made of very fine mud that settled in calm water, and they are the most common sedimentary rocks.
- Most fossils are found in sedimentary rocks, because living things were buried in the layers.
Trees and pragmatics
Every meaning and example of «sedimentary» parsed by Mova, each sentence with its dependency tree and frames.