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Dynamic Earth Study
Question | Answer |
---|---|
What causes granite to break down? | moss/lichen or groundwater |
What results from rock abrasion? | rocks breaking down or wearing down |
What happens to a rock when it is weathered? | it breaks down slowly |
What are 5 causes of physical weathering? | 1. pressure 2. plants 3. animals 4. wind, water, gravity 5. temperature |
What are the 4 causes of chemical weathering? | 1. acid precipitation 2. oxidation 3. acid in living things 4. groundwater |
Which causes do chemical and physical weathering have in common? | they both break down rock |
What are 2 main causes of crack growth in rocks over time? | ice wedging and plant growth |
How does weathering affect a soft rock compared to a hard rock? Why? | soft rock is more vulnerable and weak |
What are 3 causes of abrasion of a rock? | 1. water 2. wind 3. gravity |
What happens to rock because of chemical weathering? | it changes color and it crumbles and breaks easier |