Transcript The Rock cycle - WLAScienceLab4

THE ROCK CYCLE
4th Grade Science Lab
The Rock Cycle
Types of Rocks
Igneous


Means “fire
made”
Formed from
hot, molten
rock material
that has
cooled and
hardened
Sedimentary



Made from
bits of smaller
rocks, shells, or
bone
Carried by
wind, water,
ice
Pressed into
layers over
time
Metamorphic


Begins as any
type of rock
Changed by…
 Pressure
from rocks
above
 Heat from
center of
Earth
Examples of Rocks
Igneous


Granite
Basalt
Sedimentary



Shale
Limestone
Sandstone
Metamorphic



Marble
Gneiss
Slate
Discovery Education Video

Basics of Geology: All About Rocks and Minerals
 Complete
Video (23.19)
or
 Watch
these two segments
 Crystallization:
The Birth of a Common Rock (1:52)
 The Rock Cycle: Three Types of Rock (8:00)
The Chocolate Rock Cycle
Materials
 Chocolate
Blocks
 Aluminum Foil
 Hot Water
 Plastic Knife
Make “Sedimentary” Chocolate Rocks
1.
2.
3.
Scrape some small shavings from your chocolate
block.
Gather the scrapings onto a piece of aluminum
foil. Fold the foil over the scrapings and then
press on it.
Open and observe the joined-together bunch of
chocolate scrapings.
Make “Metamorphic” Chocolate Rocks
1.
2.
3.
4.
5.
6.
Make a small boat from the aluminum foil.
Place a small pile of your sedimentary chocolate,
some scrapings, and a couple of small chunks into
your aluminum foil boat.
Float your boat in medium hot water.
Observe.
Remove when the chocolate is soft to the touch.
Let the chocolate cool.
Make “Igneous” Chocolate Rocks
1.
2.
3.
4.
5.
6.
Make a small boat from the aluminum foil.
Place a small pile of sedimentary and
metamorphic chocolate and some small chunks
into your aluminum foil boat.
Float your boat on very hot water.
Observe.
Allow the chocolate to completely melt and
become a smooth liquid.
Remove and let the chocolate cool completely.