DCA REVIEW: Soil Formation & Natural Resources

Soil is composed of all of these natural materials EXCEPT

• weathered rock
• plant matter
• plastic substances
• animal remains

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

Tags

NGSS.MS-LS2-3

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 rock by wind, water, and ice

Tags

NGSS.MS-ESS2-1

All of the following are plant remains EXCEPT - 

• Dead leaves
• Dried twigs
• Sand Particles
• Seed covers

One component of soil is decayed plant and animal remains, but the major component of soil is - 

• Fossil Fuels
• Weathered rocks
• Iron ore
• Salt water

The weathering of rocks into small pieces forms what natural resource?

• Minerals
• Water
• Coal
• Soil

Tags

NGSS.MS-ESS2-2

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 cycles of plants
• the formation of soil
• how landforms are created

How do plants contribute to the formation of soil? Plants - 

• cover the soil and shade it from sunlight
• die, decompose and become part of the soil
• use soil to grow and develop over time
• support the animal life in the soil

How would the soil be different in an area that gets very little rainfall? The soil would contain - 

• much smaller pieces of rock
• many insects and worms
• a greater variety of plants
• less water and organic matter

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What do you call it when you break down rocks into smaller pieces?

• Plant remains

• Weathering

• Decompose

• Trees