Science Unit Test on Soil 3.7 & 3.10

The carrying of weathered pieces of rock by wind, water, and gravity is 1.weathering 2.erosion 3.evaporation

The breaking down of rock into smaller pieces, such as sand, silt or clay is 1.conservation 2.erosion 3.weathering

Land surfaces that are not covered with plants… 1.Are less likely to lose soil through erosion 2.Are more likely to lose soil through erosion 3.Have the same likelihood of losing soil as land surfaces that are covered with plants

Which of the following is not a normal part of soil? 1.rock 2.silt 3.sand 4.glass

Plants grow better in which type of soil? 1.sand 2.clay 3.topsoil 4.subsoil

What is formed when freezing water cracks rocks apart? 1.Silt or sand 2.fossils 3.Gems or metals 4.topsoil

Why is it important to protect topsoil? 1.It protects subsoil 2.It is necessary for landscaping 3.It grows plants and food 4.It costs a lot to manufacture

What is topsoil made of? 1.Metals and dead plants 2.Weathered rock and humus 3.Gems and ores 4.Weathered rock and ores

Why do plants and animals depend on soil? 1.Soil is needed to walk on 2.Soil provides air for animals to breathe 3.Soil provides support and nutrients for the animals to eat 4.Soil is needed for animals to sleep on

What is soil erosion? 1.Topsoil covered with chemicals 2.Plants die for lack of water in soil. 3.Topsoil is carried away by wind and water 4.Too much fertilizer is used, hurting crops

Soil provides plants with which of the following? 1.roots 2.oxygen 3.support 4.heat

Soil is made up of 1.Rock, clay, plastic, and wood 2.Sand, metal, and clay 3.Rock, clay, silt, sand, and humus

Materials that plants need to live and grow are… 1.Nutrients 2.Bedrock 3.Sand and rock

Which layer of soil has the most nutrients? 1.bedrock 2.subsoil 3.topsoil

The pieces of decayed plants and animals in soil are called 1.humus 2.subsoil 3.clay

The layer of rock beneath the subsoil and loose rock is 1.bedrock 2.topsoil 3.humus

The process of making soil takes many 1.days 2.months 3.years

Which of the following is NOT a way of conserving soil? 1.Planting the same crops every year in a field 2.Contour plowing a field 3.Planting new young trees (seedlings) after cutting down trees for lumber 4.Rotating the crops planted in a field regularly

Which layer has the most nutrients? 1.A 2.B 3.C

Which layer has the most non-living material? 1.A 2.B 3.C