Rocks: Where They Come From
Follows Don as he sees different kinds of rocks at a granite quarry, sandstone cliff and museum. Demonstrates the effects of water, heat and pressure in the formation of rocks.
Follows Don as he sees different kinds of rocks at a granite quarry, sandstone cliff and museum. Demonstrates the effects of water, heat and pressure in the formation of rocks.
2023
1999
1991
2023
2017
2023
2007
2020
1971
2018
2012
2009
2018
2012
2014
2005
2016
2013
1948
2016