Question

mechanical or chemical weathering
study each diagram below which shows causes of weathering. then answer the questions about each
program.

1. figure c shows an example of _

weathering. (chemical/mechanical)

1. the chemical make - up of the crust _

changing. (is/is not)

1. figure d shows an example of _

weathering. (chemical/mechanical)

1. the chemical make - up of the curst _

changing. (is/is not)

1. figure e shows an example of _

weathering. (chemical/mechanical)

1. the chemical make - up of the curst _

changing. (is/is not)

1. figure f shows an example of _

weathering. (chemical/mechanical)

1. the chemical make - up of the curst _

changing. (is/is not)

Explanation:

1. Mechanical weathering involves physical breakdown of rocks without changing their chemical composition. Figure C shows a tree root growing near rocks, which is a physical force breaking rocks (mechanical).
2. Since it's mechanical weathering (from 1), the chemical makeup of the crust is not changing.
3. Figure D shows a tree root growing into a rock, which is a physical (mechanical) action.
4. As it's mechanical weathering (from 3), chemical makeup is not changing.
5. Figure E shows ice - related (like frost wedging, a physical process), so mechanical.
6. Due to mechanical nature (from 5), chemical makeup is not changing.
7. Figure F shows temperature changes (day - night heating and cooling of rocks), a physical (mechanical) process.
8. Because it's mechanical (from 7), chemical makeup is not changing.

Answer:

1. mechanical
2. is not
3. mechanical
4. is not
5. mechanical
6. is not
7. mechanical
8. is not