WorksheetsSoil Factors and components-Aviation
Total questions: 20
Worksheet time: 10mins
Which of these is a biotic factor in a river ecosystem?
the types of microorganisms that live in the river water
the speed at which the river water flows toward the ocean
the amount of soil and other particles carried by the river
the amount of rain that flows off the land and into the river
Which of the following is a biotic factor in an ocean ecosystem?
the salt content of the water
the temperature of the water
the fish in the water
the oxygen in the water
A hollow, sealed glass sphere contains sand, water, air, algae, and tiny brine shrimp. The sphere is a model ecosystem. Which of these is a biotic factor of this ecosystem?
air
sand
water
algae
Refer to the diagram. Which list includes abiotic factors only?
tems A, C, D
Items A, B, C, D, E
Items A, D
Items B, C, E
Which statement below refers only to biotic components in an ecosystem?
In Yellowstone Park, shrubs have expanded their range into large areas formerly populated by short grasses, due to overgrazing and trampling by livestock.
Photosynthesis and respiration are not considered atmospheric processes.
Evaporation, transpiration, and precipitation are complex processes that cycle water between the atmosphere and the Earth's surface.
Vegetation is an indicator of several environmental factors, including precipitation, temperature, soil, geology, and wind.
What tittle should replace X and Y in the table?
elements; compounds
abiotic; biotic
natural; man-made
microscopic; macroscopic
What are the components (parts) of soil?
particles of rock, air, water, and humus;
particles of rock, air, water, and humus
particles of rock, air, water, and humus
particles of rock, air, water, and humus
What is the largest component (biggest part) of soil
Particles of rock
Water
Air
Humus
What is humus? What color is soil with lots of humus?
The organic material in soil; light tan
The organic material in soil; dark brown to black
Sand in the soil; dark brown to black
Silt in the soil; light tan
Which component of soil is small grains of worn-down rock, has very few nutrients, might be found at the beach, and does not hold water well?
sand
rock
humus
clay
Which component of soil has tiny of soil, holds water very well, provides nutrients, and can be used to make pottery?
sand
silt
humus
clay
Which component of soil is decayed matter, or plants and animals, is found above the topsoil, is very dark in color, and has lots of nutrients ?
sil
rock
sand
humus
Which component of soil is very small pieces of rock; the particles are smaller than sand but larger than clay.
humus
silt
sand
rock
Leaves fall to the ground and decay. What component of soil do they become?
sand
humus
clay
silt
Why is it important to protect soil?
It covers the bedrock layer at the bottom of the earth
It dries up quickly in the sun.
It has nutrients and minerals that help plants grow.
It has many harmful pollutants that can damage the earth.
What is the difference between weathering and erosion? Give an example of each.
(a)
why are soils important?
(a)
Two important variables of climate are
(a)
Layers that appear within a soil are referred to as
(a)
Soil is formed over a long period of time by a number of factors. It can take up to 1000 years for just an inch of soil to form. Besides time, other factors that help soil to form include are (a)
