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- 1. Multiple Choice
Which of the following is NOT one of the three types of soil?claysandsiltmud - 2. Multiple ChoiceAre there minerals in soil?YesNo
- 3. Multiple ChoiceEllen grabs a topsoil sample in her hand. She rolls it into a ball. The soil feels gritty and the ball falls apart. What part of the topsoil most likely made the topsoil feel gritty?claysandsilthumus
- 4. Multiple ChoiceYou dig a small hole in the soil and the next day it rains. The hole fills with water, but does not empty even after several days of dry weather. What is the soil mostly made of?claysandhumussilt
- 5. Multiple ChoiceThe texture of soil depends mainly onthe types of plants that grow in the soil.the size of the particles in the soil.the color of the soil.the number of worms in the soil.
- 6. Multiple ChoiceWhich of the following best describes soil erosion?A. the breakdown of soil by chemicalsA. the improvement of soil quality by fertilizersA. the breakdown of soil by droughtA. the movement of soil by wind or water
- 7. Multiple ChoiceMany plants cannot grow in sandy soil. Why is this true?Sandy soil does not hold enough water.Oxygen cannot pass through sandy soil.Roots cannot easily push through clay soil.Sandy soil has too many nutrients.
- 8. Multiple ChoiceWhich type of soil can hold the greatest amount of water?Sand, because it has the biggest particles.Silt, because its particles are smaller than sand.Clay, because its particles are very small.Loam, because it is a combination of different types of soil.
- 9. Multiple ChoiceWhere do most plants and animals live?SubsoilTopsoilBedrockLoam
- 10. Multiple ChoiceWhat is soil a mixture of?dirt and leavesrocks and waterair and foodrock particles, minerals,decayed organic material, air and water
- 11. Multiple ChoiceHow do scientists classify different types of soil?Scientists classify soil into major groups based on climate,plants,and soil composition.Scientists classify soil into groups based on where they are in the country and what kind of animal bones are in it.Scientists classify soil into groups based on what Lowe's it came from.
- 12. Multiple ChoiceWhy is soil so important?a. because it provides food and habitat for organismsb. because it's good for plantingc. because it covers earth
- 13. Multiple ChoiceHow do soils differ?a. they are all made out of different thingsb. they are all made for different thingsc. A & Bd. they don't differ
- 14. Multiple ChoiceWhich has the soil components listed from smallest to largest?sand, gravel, clay, siltclay, silt, sand, gravelclay, sand, silt, gravelgravel, clay, sand, silt
- 15. Multiple ChoiceSoil ______ depends on the particle sizes and their relative proportions within the soil.pHmixturestexturehumus
- 16. Multiple ChoiceWhat is one type of soil?SnowGrassSiltWater
- 17. Multiple ChoiceWhich type of soil has the largest particle size?ClayLoamSandSilt
- 18. Multiple ChoiceWhy is soil important?There would be no EarthEarth would be made of stoneNo humans on EarthThere would be any food available on Earth
- 19. Multiple ChoiceWhat is the layer of soil that contains humus, leaf litter, and other organic matter?O - OrganicA - TopsoilB - SubsoilR - Bedrock
- 20. Multiple ChoiceHow does freezing water cause the weathering of rocks? The freezing water—keeps the rocks in placemakes the rocks last longerexpands cracks and breaks rockscauses rocks to fall in landslides
- 21. Multiple ChoiceWhat is mechanical weathering?Process through which rocks are physically broken into smaller pieces.Rocks are broken down through chemical changes.Rocks are worn away from acid in plant roots.Rocks broken down by machinery.
- 22. Multiple ChoiceThe process that breaks down rocks and other materials on Earth's surface is calledweatheringerosionsoil conservationdecomposition
- 23. Multiple ChoiceThe diagrams shows a natural process that weathers rock.
Which statement best explains why this process results in weathering?frozen water acts as a solutewater expands when it freezesthe mass of water increases when it freezesfrozen water dissolves most types of rock - 24. Multiple ChoiceWhich agents break down earth materials?wind onlyearthquakes and gravityice and 007wind, water, and ice
- 25. Multiple ChoiceWhen there are not enough plants to hold topsoil in place, water and _______ carry the topsoil away, leaving the subsoil exposedsunlightbirdsmagnetic fieldswind
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