a mix of tiny rocks and bits of dead plants and animals
soil
The wearing away of land features by wind, water, ice, and gravity is ___.
erosion
A ________ is made of minerals and can be broken down
a rock
A hardness scale that is used to determine how hard a rock is
Mohs Scale
A scientist who studies Earth's layers of soil and rock is a ___.
geologist
What is the best soil for growing crops?
topsoil/loam
What is soil with large particles, such as pebbles, and is very rough?
gravel
What do we call soil that is rich in nutrients and important to crops?
fertile
What is the removal of weathered rock and soil?
erosion
Soil with small particles usually holds more water than rocky soil. (true or False?)
True
What contains tiny particles of soil that hold water well and provide nutrients? Hint: A type of soil
clay
Which of the following would NOT help you identify a mineral? texture, hardness, weight, color
weight
What is the luster of a rock?
how shiny a mineral is
What does it mean to classify items like rocks?
to sort by putting similar things together
small grains of worn-down rock, few nutrients, does not hold water well
sand
What is erosion?
the removal of weathered rock and soil
What is the breaking down of rocks into smaller pieces?
weathering