Soil Formation Quiz choose lesson 1 grade 6

The material rich in nutrients and produced from the decomposition of dead organisms is called

Silt particles are larger than…..and smaller than ……

• clay particles - sand particles.

• big rocks - clay particles.

• humus.

• water.

The soil provides the plant with all of the following, except..........

• water.

• air.

• nutrients.

• sunlight.

From the main factors that cause the soil formation are........... and….

• erosion evaporation.

• weathering condensation.

• erosion-weathering.

Soil is important for plants as.......….…....

• it provides them with nutrients and minerals.

• it presents the home of some animals.

• some animals depend on plants in feeding.

• it contains many small granules of rocks.

From the components that are not found in the soil............

• minerals.

• sunlight.

is the loose layer which covers the Earth's crust.

• Humus

• Water

• Soil

• Air

The organic materials which are found in the soil include

• sand remains of dead organisms.

• humus - silt.

• silt clay.

• remains of dead animals - plants.

Which of the following are from the inorganic ingredients in the soil ?

• Rocks, air and water.

• Plants, animals and air.

• Decomposers, plants and humus.

• Decomposers, air and water.