A
Scientists classify rocks by how they are __.
formed
The layer of soil that has large, unbroken rock is __.
bedrock
The remains fo things that have died and decayed became __.
humus
These minerals are easy to find.
common
The layer of soil that contains humus & where plants grow is __.
topsoil
The layer of soil that has pieces of rock, & contains less humus than topsoil is __.
subsoil
__ rocks form when layers of sediment are pressed together & hardens.
precious
The breaking down of rocks into smaller pieces is __.
weathering
The remains or trace of a living thing that has died & was buried quickly is a __.
fossil
Hard pieces of the earth's surface are called __.
rocks
Soil is made of small bits of broken rock, air spaces, __ & __.
humus & water
When none of a plant or animal is still alive is __.
extinct
__ is the movement of rocks & soil.
Erosion
Rocks are made of one or more __.
minerals
__ rocks forms when melted rock cools.
Igneous
flowing water ice
plants wind
A solid material in nature that was never alive in called a __.
mineral
__ rocks form when igneous or sedimentary rocks are changed by great heat & pressure.
Metamorphic
The surface of the earth is always __.
changing
Anything in nature that God made for people to use is a __.
natural resource
Adaptation is a characteric of a living thing that helps the living thing to survive in its environment is what kind of view.
Biblical or Evolutionary
Both
How is a landslide an example of erosion?
It is the rapid downhill movement of large rocks & soil.
Three properties that can be used to identify minerals are:
crystal shape color
hardness streak
Why is it important to conserve soil?
It is used to grow food for people & animals.
It is used for medicine, dishes, bricks.