• Welcome to the Weathering Quiz!

• You will answer all of the questions on your clicker. There are 15 questions on this part of the quiz. Read each question carefully and answer each question to the best of your ability.

Location E: An animal burrow is centered in the photo. Animals that burrow into the ground are a source of weathering by disturbing the soil. 1. Is this a type of chemical or mechanical weathering? A. mechanical B. chemical

Here you see a picture from the school’s parking lot. You will notice many cracks in the asphalt. 2. What process could happen this winter to enlarge these cracks?

A. Abrasion

B. Acid rain

C. Ice wedging

D. oxidation

Location B: Here we see a close up photo of many small holes or pockets that have formed on this rock. 3. Why this rock is an example of differential weathering. A. different amounts of rain affect different parts of the rock B. different plants and animals are weathering this rock C. different levels of acid rain are affecting this rock D. the weaker parts of the rock are weathering at a higher rate than the stronger parts of the rock

• 4. Location B: The holes are forming as water dissolves the rock in these locations. Would this weathering be mechanical or chemical?

• A. mechanical

• B. chemical

• 5. Could ice wedging play a role in causing the differential weathering of this rock to occur at a higher rate?

• YES

• NO

• Location C: The rocks in this photo were found in a small creek/stream bed.

6. What type of mechanical weathering is making these rocks so smooth?

A. Abrasion

B. Ice wedging

C. Acid rain

D. Plant actions

• 7. Which of the following is the best description of abrasion?

• A. water freezes and expands, causing rocks to break into pieces

• B. animals digging into the soil, causing it to become disturbed

• C. wind/water grinding small sediments into larger rocks, causing them to break down

• D. plant roots growing into cracks in a rock and breaking the rock down

• 8. Would abrasion be considered a mechanical or chemical weathering?

• A. mechanical

• B. chemical

9. Location D: How does moss weather rocks?

A. The roots of the moss gradually break the rock apart.

B. The moss is home to a type of insect that can break the rock down.

C. The moss produces a weak acid that slowly eats away at the rock.

D. The moss attracts worms and other invertebrates that break the rock down.

• 10. Is the example from question 9 chemical or mechanical weathering?

• A. mechanical

• B. chemical

Location F: Here we see a large rock being taken over by an even larger tree. 11. How this rock can be weathered as the tree continues to grow over it? A. the roots of the tree produce a strong acid that eats away at the rock B. the tree roots can physically crush the rock, or work there way into cracks in the rock C. the roots will cause the rock to oxidize D. acid rain will be absorbed by the tree and then transferred onto the rock

• 12. Location F: Is this showing mechanical or chemical weathering?

• A. mechanical

• B. chemical

13. Location G: The large rock pictured below has a large crack running through it. How did weathering most likely cause this rock to crack? A. abrasion B. acid rain C. animal actions D. ice wedging

• 14. Would the crack in this rock be getting weathered by mechanical or chemical means?

• A. mechanical

• B. chemical

Location A: The pole that holds the ‘No Dumping’ sign is being rapidly weathered by a form of chemical weathering. 15. What is the scientific name for this type of weathering? A. carbonation B. calcification C. liquefaction D. oxidation