Weathering

What are the three types of rock?

• igneous, sedimentary, metamorphic
• organic, crystalline, volcanic

Tags

NGSS.MS-ESS1-4

What is mechanical weathering?

• Chemical weathering involves the alteration of minerals in rocks.
• Mechanical weathering is the process of rocks melting due to heat.
• Mechanical weathering refers to the chemical reactions that change rock composition.
• Mechanical weathering is the physical breakdown of rocks into smaller fragments.

What are three examples of mechanical weathering?

• frost heaving, frost wedging, pressure release

• Chemical weathering, soil erosion, sedimentation

How does chemical weathering differ from mechanical weathering?

• Chemical weathering is faster than mechanical weathering.
• Chemical weathering alters the chemical composition of rocks, whereas mechanical weathering only breaks rocks into smaller pieces.
• Mechanical weathering changes the color of rocks.
• Chemical weathering only occurs in wet climates.

What causes Acid Rain?

• The release of sulfur dioxide and nitrogen oxides into the atmosphere.
• The burning of fossil fuels without any emissions.
• The presence of carbon dioxide in the atmosphere.
• The evaporation of water from lakes and rivers.

Tags

NGSS.MS-PS1-2

How do speleothems form?

• Speleothems develop from the accumulation of soil in caves.
• Speleothems form from the deposition of limestone from dripping water in caves.

• Speleothems are created from the erosion of cave walls by wind.
• Speleothems are formed by volcanic activity.

What makes up soil?

• Soil is made up of weathered particles, humus, water, and air.

• Organic matter and rocks only
• Water and air only
• Sand and gravel only

List the particles of soil from the largest to the smallest.

• Pebbles, Sand, Silt, Clay
• Loam, Silt, Clay

• Sand, Silt, Clay

• Sand, Clay, Silt

What are soil horizons?

• Soil horizons are layers of soil that differ in composition, texture, and color, formed through natural processes.
• Soil horizons are the top layer of the atmosphere.
• Soil horizons are types of plants that grow in the soil.
• Soil horizons are layers of rock found beneath the soil.

How does frost wedging contribute to mechanical weathering?

• Frost wedging causes rocks to expand and contract, leading to cracks.

• Frost wedging dissolves minerals in rocks.

• Frost wedging involves the chemical alteration of rock surfaces.

• Frost wedging is a process of volcanic activity.

Tags

NGSS.MS-ESS2-2