Show:
Rocks
Soils
Minerals
Weathering/Erosion
Mystery
100
What is a rock?
A naturally formed solid made of two or more minerals.
100
What type of soil are found on many farms?
Loam
100
What is an object that is solid and made of one type of crystal?
Mineral
100
What is weathering?
The breaking down of rocks over time.
100
What is luster?
The amount of shine a mineral has.
200
What is texture?
The way something feels.
200
What is humus?
Bits of dead plants and animals mixed in with topsoil.
200
Why is salt considered a mineral? Give 2 reasons.
It is a natural solid and it not living.
200
What is erosion?
The movement of rocks and soils from one place to another.
200
Why are some minerals more valuable, or expensive, than other minerals? Example: diamonds
Diamonds and rare minerals are harder to find and make them rare. They cost more money because they are rare.
300
List the 5 physical attributes of rocks.
Texture, luster, shape, color, and hardness
300
What type of soil feels like powdery grains when you rub it between your fingers? Hint: We have this in Georgia!
Clay
300
What is the softest mineral?
Talc
300
What are two examples of weathering?
Wind, water, or ice
300
If a tree leaf falls off a tree and onto the ground, it will eventually become part of ___________.
Humus
400
Why are rocks NOT on the Mohs Hardness Scale?
Rocks are made up of more than one mineral. You only use the Mohs Scale for minerals.
400
What type of soil has the largest grain size? It is also not good for plants because it does not hold water very well.
Sand
400
What is the hardest mineral?
Diamond
400
Why are some mountain tops rounded and some pointy? What causes this to happen?
Wind and water shape the mountain tops. The older mountain tops are rounded from the wind.
400
Which is NOT a property of a mineral? -Color -Temperature -Hardness -Texture
Temperature is NOT a property of a mineral.
500
How are rocks and minerals related?
Rocks contain minerals.
500
List the following soils in order from largest grain size to smallest grain size: Clay - Sand - Silt (or humus mixture)
Sand, silt, clay
500
What is used to measure the level of hardness of a mineral?
Mohs Hardness Scale
500
If water from a river moves sand and soil to a new part of the river, is this weathering or erosion?
Erosion
500
In your own words, tell me the difference between weathering and erosion.
Weathering is the breaking down of rocks. Erosion is the movement of rocks and soils to a new location.