Show:
Rocks and Soil
Minerals
Rocks
Soil
Types of Soil
100
Earth's land is made mostly of?
Rocks
100
Solid nonliving materials found in nature are called _______.
minerals
100
Most rocks are made of ___________.
minerals
100
True or False Soil forms as rocks break down into smaller and smaller pieces.
True
100
Soil comes in _________ main types.
three
200
True or False Sand is an Earth material.
True
200
Salt is a mineral called?
Halite
200
Sandstone forms in ___________.
layers
200
To be soil, the mixture of rock pieces, air, and water also needs _______.
humus
200
Sandy soil has the ______________ grains.
largest
300
What is made of the tiniest rock pieces?
Clay
300
A small piece that makes up rock or soil
grain
300
_________________ is how rough or smooth a rock is.
Texture
300
Plants grow well in this layer.
topsoil
300
This soil is often red.
clay
400
Earth's land is also made of what?
soil
400
______________ is a property you observe with sight.
Color
400
Name two properties of rocks.
Color, textures, streak
400
Soil takes a long time to __________.
form
400
This soil is dark brown and drains well.
loam
500
Names four sizes of rocks.
boulders, gravel, sand, clay
500
You can tell more about a mineral by its ________.
streak
500
A rock's texture depends on the ________ of its grains.
size
500
____________ blows soil away.
Wind
500
True or False One kind of soil is best for all plants.
False