Fill in the blank: There are ________________ main types of soil.
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What type of rock forms from cooled and solidified lava?
igeneous
metamorphic
sedimentary
puffco
The definition of soil is, "the mineral and organic material on the surface of the earth."
True
False
A rock is made up of
glitter, slime, and taffy
two or more minerals
only one mineral
compounded pebbles
Minerals are a liquid, have always been alive, and were formed by humans.
True
False
Soil is a mixture of...
water, clay, grass, and graphite
graphite and tile
sand, silt, clay, and bits of decaying animal and plant tissue
the letters s, o, i, and l
After rocks form, they wear down and form again. This is called the rock cycle.
True
False
Fill in the blanks: Clay has the smallest particles. It is ___________ to the touch when wet, but _______________ when dry.
sticky, smooth
hot, freezing
moist, melted
gloppy, dusty
Igneous rocks are formed when weather and erosion cause them to break down and harden.
True
False
We identify minerals by their properties. Name one property that we look at:
hardness
scratch test
color
streak test
luster
Sand is made up of large particles, so it feels rough when you rub it between your fingers. Sand feels...
rocky and freezing to the touch
dry and gritty to the touch
slimy and feathery to the touch
like a corn cob
One example of an igneous rock is pumice.
True
False
What scale do we use to measure the ability of minerals to scratch each other?
The Mostess Scale of Hardness
The Hostess Snack Scale of Tastiness
The Mohs Scale of Hardness
Peep pop doop dop
Loam is often light brown or tan.
True
False
Name an example of sedimentary rock:
limestone
sandstone
Which is the best soil for growing plants?
loam
sand
clay
Metamorphic rocks are rocks that have changed because of heat and pressure. These rocks were once other rocks, but they have changed and turned into metamorphic rocks.
True
False
Luster is...
how shiny a rocket is
the reflection of light from a mineral
how fantastic a person's hair is
another word for mirror
Soil is made up of layers called horbens.
True
False
Fill in the blank: We use minerals everyday. Whenever you pick up a glass or put __________________, you are using a mineral.