Question

4 multiple choice 20 points
an example of chemical weathering is:
rocks bumping against each other
acid rain causing rock to dissolve
water freezing in a crack in rock and expanding
plant roots cause a rock to break in half

5 multiple choice 20 points
choose the factor that affects soil formation.
how fast water drains through rock
type of parent material
age of the parent material
acidity of subsoil

Explanation:

Analyze chemical weathering mechanisms

Chemical weathering involves chemical reactions that decompose or alter the minerals in rocks. Acid rain reacting with and dissolving rock minerals is a chemical process, whereas rocks bumping, water freezing, and plant roots breaking rocks are mechanical (physical) weathering processes.

Analyze factors affecting soil formation

Soil formation is primarily controlled by five active factors: parent material, climate, topography, biological factors (organisms), and time. Among the choices, the type of parent material is a fundamental factor that determines the initial mineral composition and physical properties of the forming soil.

Answer:

Question 4

• rocks bumping against each other
• acid rain causing rock to dissolve (Correct answer)
• water freezing in a crack in rock and expanding
• plant roots cause a rock to break in half

Question 5

• how fast water drains through rock
• type of parent material (Correct answer)
• age of the parent material
• acidity of subsoil