A
What physical attributes do geologist use to classify rocks?
color, luster, texture, hardness
What is the texture of soil determined by?
A. Color
B. Particle size
C. Ability to absorb water
b. particle size
Which is the correct order of soil particle size from smallest to largest?
a. silt, sand, clay
b. Clay, sand, silt
c. Clay, silt, sand
c. clay, silt, sand
A geologist is observing a rock and is looking at the way it reflects light. What physical attribute are they using?
Luster
Which soil has fine particles and holds water for a long time?
Clay
On the playground you notice a place where the soil is washed away from the sidewalk. What is that an example of?
a. Weathering
b. Erosion
c. digging
b. erosion
___________ describes how a rock feels.
a. Luster
b. Color
c. texture
c. texture
You are observing a soil and notice it has large coarse particles. Water also drains through it very quickly. What type of soil are you most likely observing?
Sand
Water, ice, and wind break down rocks, minerals, and soil in a process called__________.
Weathering
Which scale is used to measure the hardness of a mineral?
a. Scratch scale
b. MOHs Hardness scale
c. Rock scale
b. MOHs Hardness Scale
Which type of soil is a mixture of sand, silt and clay?
Loam
When rocks or soil are moved by water or wind from one place to another it is called___________.
Erosion
Which is not a type of soil?
a. grass
b. Loam
c. Sand
d. silt
a. grass
A farmer needs soil that has medium particles, is good for growing crops, and holds nutrients for a long time. What type of soil does he need?
Silt
How do you identify and classify rocks?
a. Color
b. Texture
c. Hardness
d. All the above
d. all the above