Review the weather predicted with different cloud types... what weather comes with cold fronts? warm fronts?
A mineral's strength or hardness number is determined by whether or not can scratch another mineral or object. It also depends on whether it gets scratched back by that mineral or object. For the minerals provided, put them in order of their strength.
If the first mineral scratches the second mineral AND the second mineral can't scratch the first mineral back then... the first mineral is stronger or harder.
If the first mineral scratches the second mineral AND the second mineral can scratch the first mineral back then... they have equal strength.
Make sure to look for an actual scratch mark on the mineral. Sometimes some of the weaker mineral rubs off on the stronger mineral and powder mark if left behind.
For the following minerals put them in order from weakest to strongest...
In the field you probably would have some common materials to determine strength/hardness such as your fingernails, a penny, glass and quartz. These materials can be used to determine a relative strength or a strength/hardness number.
For the following minerals determine their strength..
A mineral's strength or hardness number is determined by whether or not can scratch another mineral or object. It also depends on whether it gets scratched back by that mineral or object. For the minerals provided, put them in order of their strength.
If the first mineral scratches the second mineral AND the second mineral can't scratch the first mineral back then... the first mineral is stronger or harder.
If the first mineral scratches the second mineral AND the second mineral can scratch the first mineral back then... they have equal strength.
Make sure to look for an actual scratch mark on the mineral. Sometimes some of the weaker mineral rubs off on the stronger mineral and powder mark if left behind.
For the following minerals put them in order from weakest to strongest...
In the field you probably would have some common materials to determine strength/hardness such as your fingernails, a penny, glass and quartz. These materials can be used to determine a relative strength or a strength/hardness number.
For the following minerals determine their strength..
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gm_mineral_hardness.doc |