Show:
Rocks and Minerals
Types of Rocks
Types of Soil
Soil Layers
Challenge
100
a naturally formed solid made of grains of one or more minerals
What is rock
100
rock that has been changed by heat or pressure
What is metamorphic rock
100
soil that is a mixture of humus, sand, silt, and clay
What is loam
100
if you dig deep enough into soil, you will reach solid rock
What is bedrock
100
As humus breaks down, it is dark or light in color
What is dark
200
a solid object found in nature that has never been alive
What is mineral
200
rock that was once melted and then cooled and hardened
What is an igneous rock
200
the part of soil made up of broken-down pieces of dead plants and animals
What is humus
200
this layer has a lot of humus in it - many small animals, such as ants and earthworms live here
What is topsoil
200
the properties that are used in comparing soils
What is color, size of rocks, how much water the soil will hold, and amount of humus
300
the measre of how difficult it is for a mineral to be scratched
What is hardness
300
rock made when materials settle into layers and get squeezed until they harden into rock
What is a sedimentary rock
300
soil with very, very tiny grains of rock
What is clay
300
this layer doesn't have a lot of humus in it but it does have some small rocks in it
What is subsoil
300
soil is made up of
What is water, air, humus, and tiny pieces of rocks
400
Garnets and amethysts are what
What is a mineral
400
melted rock can reach Earth's surface through what
What is a volcano
400
soil with grains of rock that are too small to be seen with your eyes alone
What is silt
400
plant roots get water from the what
What is soil
400
a volcano is most likely made of
What is igenous rocks
500
another way to identify minerals; it leaves the color of the powder behind when rubbed against a rough white tile
What is a streak
500
the process of rocks changing from one kind of rock to another kind of rock
What is the rock cycle
500
soil with grains of rock that you can see with your eyes alone
What is sand
500
soils are very important to people for growing what
What is foods (fruit and vegetables)
500
sandstone is what type of rock
What is sedimentary