streak
"centi" is 100. 1 centigram is 100 grams, so Denise's sample is 68,400 centigrams. 68400 - 29510 = 38890 centigrams or 388.90 grams.
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A higher percentage of daughter isotopes present in a sample, the older the rock is.
what is the formual for Density? (mass of object diveded by its volume) What is the desity of Rock sample A? (690 g / 333 cm3 = 2 g/cm3) What is the desity of Rock sample B? (506 g / 506 cm3 = 1 g/cm3) Therefore...Rock sample A is denser than Rock sample B !! Or is it?...
streak
The color of a powdered sample of a rock is called its streak. Streak is determined by rubbing the sample across a rough white ceramic plate to reveal the color of the mineral's powder.
A core sample of a mineral
its structure
The moon rock brought back by Apollo 11 was called "Sample 10057".
"centi" is 100. 1 centigram is 100 grams, so Denise's sample is 68,400 centigrams. 68400 - 29510 = 38890 centigrams or 388.90 grams.
a sample
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The medium-sized rock sample had approximately 30% empty space, meaning 30% of its volume was not occupied by solid material.
density = mass/volume = 250g/45cm3 = 5.6g/cm3 (rounded to 2 sig figs)
Scoria is a highly vesicular (porous), dark colored volcanic rock.
A higher percentage of daughter isotopes present in a sample, the older the rock is.