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How does temperature affect the formation of crystals

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Reference no: EM131085728

1. Using the glossary of your book, please look up the definitions of the following words

a. Aphanitic texture -
b. Phaneritic texture -
c. Phenocryst -
d. Groundmass -

2. Question: How does temperature affect the formation of crystals?

3. Hypothesis:

4. Results:

Fill in the tables below. If any of your samples did not produce crystals, simply enter "no crystals". For size of crystals, I am only looking for a comparative adjective (e.g., big, small, tiny), for the appearance of crystals, I am looking for things like "they are all bunched together" or "there is just one big crystal".

Crystal Formation Table

Sample

(after 4 hours)

Sample location

Size of crystals

Appearance of Crystals

Photo of Crystals

1

Room temperature

 

 

 

2

Refrigerator

 

 

 

3

Freezer

 

 

 

Sample

(overnight)

Sample location

Size of crystals

Appearance of Crystals

Photo of Crystals

1

Room temperature

 

 

 

2

Refrigerator

 

 

 

3

Freezer

 

 

 

5. Analyze the results

a. Was your prediction correct? Explain.

b. Write three sentences that compare the size and shape of the crystals in the samples.

6. Draw conclusions

 

Granite

Basalt

Obsidian

How did the rock sample form?

 

 

 

Rate of cooling

 

 

 

Reference no: EM131085728

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