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WorksheetsSoil Formation & Decomposition
Total questions: 12
Worksheet time: 12mins
Soil is composed of all of the following materials. Select all that apply.
The weathering of rocks into small pieces forms what natural resource?
Minerals
Water
Coal
Soil
How would the soil in areas that get very little rain be impacted?
The pieces of rock would be smaller.
There would be more insects and worms.
There would be a greater variety of plants.
There would be less water and organic material.
A student made a mixture of sand, tiny rocks, small twigs, and some leaves. This student has modeled _________.
How rocks change over time.
The life cycle of plants.
The formation of soil.
How landforms are created.
Rocks near the ocean get broken into smaller pieces. What causes this change to the rocks?
Leaves falling from trees.
Clouds forming in the sky.
Water crashing against the rocks.
Salt dissolving the water
Which of the following processes will most likely contribute to the development of soil?
Volcanic eruptions that make new land.
Building up of snow in very cold areas.
Migration of animals to warmer climates.
Breaking down of rocks by wind, water, and ice.
The organic matter in soil comes mostly from plants. Which of the following locations would most likely produce soil with the greatest amount of organic matter?
A desert with very high temperatures.
A prairie with lots of grasses and flowers.
A mountain with extremely cold winds.
A river with quickly moving water.
A student exploring the formation of soil put rocks in a plastic jar of water and shook it. Afterwards, there were small pieces of broken rock in the water. What process in the formation of soil does this model?
weathering of earth materials
decay of plant matter
formation of various minerals
mixing of water and air
To rot or break down the remains of plants and animals into smaller parts is to _______.
form
decompose
weather
mix
How are the soils in these two pictures similar? Select all that apply.
Dry
Few plants
Few animals
Same texture
Same color
How are these soils different? Select all that apply.
Sand
Dry
Color
Large rocks
When plants die they will ______ and ________.
decompose
become part of the soil
disappear
make new plants.
