Unit 2: Soil – Sample Assessment Items

Soil is a natural resource made up of tiny particles of rock, minerals, and organic matter that supports plant life.

The main types of soil are sand, silt, clay, and loam.

Loam is a type of soil that is a mixture of sand, silt, and clay, making it good for growing plants because it retains moisture and nutrients.

Waves can smooth out rocks by wearing away their rough edges over time.

Erosion is the process by which soil and rock are removed from the Earth's surface by wind, water, or ice.

Water helps to dissolve nutrients in the soil, making them available for plants to absorb.

When it rains, water seeps into the soil, which can help plants grow but can also cause erosion if there is too much water.

Sand soil has larger particles and drains water quickly, while clay soil has smaller particles and retains water.

Wind can carry away small particles of soil and rock, changing the landscape over time.

Soil provides plants with nutrients, water, and a place to anchor their roots.