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Fossil Cast and Mold Worksheet

Name____________________________

In the table, write the name of the object you are using. Then put an x under the column for the quality of the mold and cast that object made.

 

Mold Quality

Object name or description	Soft or hard	None	Poor	Good	Excellent
1._________________________	__________	_____	_____	_____	_____
2._________________________	__________	_____	_____	_____	_____
3._________________________	__________	_____	_____	_____	_____
4._________________________	__________	_____	_____	_____	_____
5._________________________	__________	_____	_____	_____	_____

Cast Quality

Object name or description	Soft or hard	None	Poor	Good	Excellent
1._________________________	__________	_____	_____	_____	_____
2._________________________	__________	_____	_____	_____	_____
3._________________________	__________	_____	_____	_____	_____
4._________________________	__________	_____	_____	_____	_____
5._________________________	__________	_____	_____	_____	_____

 

•  What is a cast in your own words?

 

 

•  What is a mold in your own words?

 

 

•  Which of the objects (name or description) you tested make the best mold fossils?

 

 

•  Which of the objects (name or description) you tested make the best cast fossils?

 

 

•  Do hard or soft objects make the best casts or mold fossils?

 

 

6. Imagine a dead animal or plant that was buried in the mud. What parts of that animal or plant might make good impressions based on your experiment?