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Earth MaterialsInvestigation 1
Mock Rocks
Part 1 – Investigating Mock Rocks
Science Safety
Scientists follow safety procedures to protect themselves when performing observations and experiments
They wear goggles to protect their eyes They used the tools carefully so that they do not
harm themselves or others They do not put any scientific materials in their
mouths Spills are cleaned up quickly using the correct
procedure
Science Jobs
Manager – this person will make sure that all members are on task
Reporter – this person will report the results of their groups work, you may need to take notes
Materials getter – this person will get materials
Materials collector – this person will return materials
What We Will Learn
Rocks have many properties, including shape, size, color, and texture
Geologists use rock properties to help identify different rocks
Some dimensions of rocks can be measured and compared
What We Will Do
Make and record observations of mock rocks. Compare the properties of mock rocks with
those of real rocks. Choose appropriate measuring tools to
determine the diameter, circumference, depth and mass of rock rocks.
Vocabulary ology – study of ologist – a person who studies ento – insects bio – life geo – earth Talk in your groups and decide what the
following would be: study of insects, study of life, study of earth – a person who studies insects, a person who studies life, a person who studies earth
Vocabulary
earth materials – the non-living substances that make up the earth’s interior, surface or atmosphere
properties – something you can observe such as size, color, shape, or texture.
How scientists study rocks
First scientists make detailed observations and record their observations.
They observe first because tests they make change the rock.
They compare their observations with the results of the tests.
Rock Properties
We will observe the rocks to determine their size – measured in centimeters shape – round, oval, irregular color – black, brown, tan, white, bits of color,
etc. texture – smooth, bumpy, sharp edged
Vocabulary
Diameter – the distance across a circular object at its widest point
Circumference – the
distance around
a circular object
Earth MaterialsMock Rocks – Page 3
Depth – how thick an object is from top to bottom, thickness
Meter tape – measures objects in centimeters, a tape can measure odd shaped objects; a meter stick can only measure length
Materials
Material Getters will get the trays with 4 paper plates 4 mock rocks 4 hand lenses 1 meter tape
You will record your information in your Earth Materials Booklet.
Your work in your Earth Materials Booklet will be graded, so do your best work.
Earth Materials BookletMock Rocks – Page 2
Talk in your group and discuss the properties of your mock rocks
Help each other make sure you record all of the properties
Reporters share some of your groups observations of properties
Earth Materials BookletMock Rocks – Page 2
Observe your mock rock carefully – this is a simulation of a real rock.
Draw or trace your mock rock in your booklet. Use the hand lens to magnify your rock. Write down your observations. The challenge is to describe your rock in
detail so that later if your rock changes in any way you can identify the changes.
Earth Materials BookletMock Rocks – Page 3
Use the meter tape to record the measurements of your rock.
Measure across the widest part of your rock for the diameter
Measure around your rock for the circumference
Measure from the top to the bottom of your rock for its depth. You will have to get down and look from the side to determine the depth
Earth Materials BookletMock Rocks – Page 3
Take in your group and compare the measurements of your mock rocks
How close are your measurements? How different are your measurements? Reporters – share some of your groups
findings.
Review
What are some of the tools scientists use to study rocks? hand lenses, meter tapes
What information does each tool provide? hand lenses can help you determine properties
such as color and shape meter tapes can help you determine the diameter,
circumference and depth
Review
What kind of information is important to include in notes? properties – size, shape, color, measurements any information that will help you identify the
object How is a mock rock like/different from a real
rock it is alike because it is made up of different
materials It is different because
Review
How would you study a real rock? You would study a real rock the same way we
studied the mock rock
What We Learned
Rocks have many properties, including shape, size, color, and texture
Geologists use rock properties to help identify different rocks
Some dimensions of rocks can be measured and compared
Written in Stone
Read this story. Students will need to share books.