1. Daily Warm-Up Exercises
Day 16
Describe the processes that cause rocks to change from one form to another.
Any type of rock can melt and then cool to form an igneous rock. Any type of rock can weather, erode, move, and settle to form sediments, which can get compacted and cemented together to form a sedimentary rock. Any type of rock can be changed by heat and/or pressure to form a metamorphic rock.
What does compacted mean?
to get squeezed or pressed together so it takes up less space
What does cemented mean?
to get stuck together
What causes the pressure on a rock beneath Earth's surface?
the weight of all the rock above it
Daily Warm-Up Exercises
Daily Warm-Up Exercises

2. Observe Sand Samples (Part 2)
Investigation 4
My Sediments Exactly

3. New Sands Sand samples from different locations Beach Mountain Stream
Sand Dune

4. Sand Investigations Use a hand lens to examine the sand samples.
Record your observations on the Sand Observations worksheet.

5. Sand 1 Sand 1 is from a mountain stream:
Grains were not carried far from the source rock
Wide variety of sizes
Not well rounded or sorted
Sharp edges

6. Sand 2 Sand 2 is from a beach:
Grains were moved a great distance from their source by water
Tumbled by waves
Uniform in size
Composed of mostly quartz particles
Well rounded

7. Sand 3 Sand 3 is from a sand dune
Grains were buffeted by wind in a dry environment
Have some flat sides
Well-sorted
Frosted appearance

8. Mystery Sand How can we identify the source?
Record your observations and identifications on your worksheet.