Download Name: Period:______ Finding the Density Between Intrusive and

Name:________________________________________
Period:_________
Finding the Density Between Intrusive and Extrusive Rocks
Purpose: To determine the specific density between 4 types of igneous rocks; intrusive granite and
diorite, and extrusive andesite and basalt.
Research: Intrusive rock is rock formed from magma below the Earth’s surface or inside the Earth;
they are also called magmatic or plutonic rock. Extrusive rock is rock formed by lava near or
on the Earth’s surface or exiting the Earth; they are also called volcanic rock.
Density = __ mass(g)___
volume(cm3)
measuring mass – weight in grams(g)
measuring volume - 1cm3 = 1ml
Hypothesis: From what I know about intrusive and extrusive rock, ________________________________
_______________________________________________________________________________
_______________________________________________________________________________
Materials: worksheet, electronic scale, graduated cylinder, pie pan tray, water, displacement container,
8 rock samples(2 of each), paper or plastic cup, and calculator.
Procedures: Obtain all materials. Identify the rock samples. Then using the scale, weigh each rock
sample and record the mass; make sure to be accurate to the tenths (00.0g). Place the
the displacement container in the pan and the cup under the flow port to capture the H2O
overflow. Fill up the displacement container with H2O until the H2O begins to drip out of
the flow port. Pour out the H2O in the cup. Drop a rock sample in the displacement
container and capture the displaced H2O into the cup. Measure the displaced H2O by
pouring the H2O from the cup into the graduated cylinder. Record the volume in cm3.
Repeat for each sample.
Calculate the density for each sample by using the formula g/cm3.
Results:
granite#1 granite#2 diorite#1 diorite#2 andesite#1 andesite#2 basalt#1 basalt#2
Mass: _______
________ ________ ________ _________ __________ ________ ________
Volume: ________ __________ ________ _________ __________ __________ ________ ________
Density:
granite #1 _________________ g/cm3
diorite #1 _________________ g/cm3
andesite #1 _________________ g/cm3
basalt #1 _________________ g/cm3
granite #2 _________________ g/cm3
diorite #2 _________________ g/cm3
andesite #2 _________________ g/cm3
basalt #2 _________________ g/cm3
Analysis & Conclusion: (Remember to answer your hypothesis.)
You may also use the back of the paper for additional analysis and conclusion comments.