Name ______________________________Block_____
Weathering Lab
Think about it:
1. What is weathering?
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Materials:
2 rocks
2 small pieces of chalk
1 50 mL beakers
scale
sample plates
pipet
stopwatch
vinegar
sandpaper
Part One – Chemical Weathering
Hypothesis:
2. What will happen when you put vinegar on the chalk and rock?
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Mass of Rock
Mass of Chalk
Before
After
Change
3. Describe what happened to the chalk and rock when you put the vinegar on them.
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4. Why was there a change in mass?
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5. What is chemical weathering?
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6. In the chemical weathering chart, which one had the greatest mass change? Why?
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Name ______________________________Block_____
Part Two – Physical Weathering
Hypothesis:
7. What will happen when the chalk and rock are rubbed with sandpaper?
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Mass of Rock
Mass of Chalk
Before
After
Change
8. What is physical weathering?
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9. During weathering in our environment, where do the sediments go?
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10. In the physical weathering chart, which one had the greatest mass change? Why?
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11. How would building a home on the beach be affected by weathering and erosion?
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12. Which type of erosion causes sand dunes to form?
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13. How does weathering and erosion affect the turbidity of water in a river?
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14. What are some ways to tell if there is too much sediment in the Chesapeake Bay?
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Name ______________________________Block_____
Part One Procedure:
1. Find the mass of each rock and piece of chalk.
2. Put some vinegar in a beaker.
3.Place one piece of rock and one piece of chalk into different sample
plates.
4. Using the pipet put 10 drops of vinegar onto the chalk and 10 drops
onto the rock.
5. After 5 minutes carefully remove the chalk and rock from their dishes
and pat them dry.
6. Find the new mass after the chemical weathering.
7. Make sure to clean your station.
8. Fill in the chart and answer the questions.
Part Two Procedure:
1. Get a fresh rock and piece of chalk and find their mass.
2. Rub the chalk across the sand paper 15 times then find the new mass.
3. Rub the chalk across the sand paper 15 times then find the new mass.
4. Clean up your stations.
5. Fill in the chart and answer the questions.
Good to Know Erosion Facts:
* Waves erode the base of cliffs; undermining them and making them
collapse.
* Mountain ranges contain deep valleys that have been carved out by
glaciers.
* Wind erosion is common in deserts, where sand is blown about
because there are few plants to hold the soil in place and there is no rain
to bind the soil particles together.
* A lahar is a mudflow of water mixed with volcanic ash.