This is a very basic presentation about the rock cycle for my 7th grade science class. The first eleven slides are narrated. After slide 10 there is a YouTube video with a rock cycle song. Slides 12-26 are an interactive review quiz. Enjoy!

1. Introduction to Rocks
7th grade science

2. What are rocks?
 Rocks are a combination
of minerals

3. Are all rocks the same?
 No Igneous: Granite
 Not only are they different
colors, but there are also
different types
 The three main types are
igneous, sedimentary, and
metamorphic rocks. Metamorphic:
Gneiss
Sedimentary: Sandstone

4. Where do rocks come from?
 Rocks are created,
transformed, and
destroyed in a process
called the rock cycle
 Interactive Rock Cycle
Animation
http://www.cotf.edu/ete/modules/msese/earthsysflr/rock.html

5. The rock cycle: Part 1
 First of all there is no real
beginning or end to the
rock cycle.
 However, for this lesson
we will begin with
igneous rocks.
 Igneous rocks often forms
when lava erupts from
volcanoes then cools.

6. Igneous Rocks
Can be:
 Shiny
 Crystalline
 Porous
http://geology.about.com/library/bl/images/blrockindex.htm

7. The rock cycle: Part 2
 Secondly, the rock cycle is
not a perfect circle, it does
not occur in a specific
sequence.
 Igneous rocks can be re-
melted, eroded, or pressed.
 Rocks that are formed
from eroded sediment are
Sedimentary Rocks.

8. Sedimentary Rocks
Can be:
 Grainy, Sandy
 Made of different pieces
of rocks or minerals
 Striped

9. The rock cycle: Part 3
 Finally, rocks can be
transformed over time to
make new rocks.
 Heat and pressure can
create new rocks
 These rocks are called
Metamorphic rocks.
http://www.tulane.edu/~sanelson/geol111/metamorphic.htm

10. Metamorphic Rocks
Come in a variety of styles,
shapes and colors
Many have stripes, but not
all
Many contain unique crystal
and mineral formations
only unique to
metamorphic rocks

11. Review
 There are review questions about rocks on the
following slides.
 In order to progress through the quiz in the correct
order you have to click the links on the slides.
 Click the “Begin Quiz” link on this page to start
the quiz.
Begin Quiz

12. 1. True or False: The rock cycle
always starts with igneous rocks and
ends with metamorphic rocks.
A. True
B. False

15. 2. True or False: The rock cycle does
not always follow the same order.
A. True
B. False

18. 3. Igneous rocks…
A. Can be formed from pieces of sediment that have
been compacted and glued together.
B. Can be formed from molten magma or lava.
C. Are formed when heat and pressure transform old
rocks into new rocks.

21. 4. Sedimentary rocks…
A. Can be formed from pieces of sediment that have
been compacted and glued together.
B. Can be formed from molten magma or lava.
C. Are formed when heat and pressure transform old
rocks into new rocks.

24. 5. Metamorphic Rocks
A. Can be formed from pieces of sediment that have
been compacted and glued together.
B. Can be formed from molten magma or lava.
C. Are formed when heat and pressure transform old
rocks into new rocks.

28. References
 http://www.cotf.edu/ete/modules/msese/earthsysflr/rock.html
 http://geology.about.com/library/bl/images/blrockindex.htm
 http://www.tulane.edu/~sanelson/geol111/metamorphic.htm