This week is all about the rock cycle: the natural process of rocks being turned into other kinds of rocks. In this video, I demonstrate the rock cycle using crayons - and you can too! (Provided you have the right materials and a grownup-aligned person to do the oven part.) Grab your favorite rocks and least-favorite crayons and let’s get rockin’!
YOU WILL NEED:
Crayons (preferably old, broken ones)
Pencil sharpener
Wax paper
Aluminum foil
(optional) something to use as a mold for your molten “rock.”
VOCABULARY:
There are three main types of rocks, classified by how they form.
IGNEOUS rocks are formed from molten rock, called MAGMA, that crystallizes as it cools.
SEDIMENTARY rocks are formed at the earth’s surface, from fragments of rock called SEDIMENTS. The sediments come from other rocks that have been weathered by wind or water or other processes. Sedimentary rocks might be loose, or might be cemented (stuck loosely) together.
METAMORPHIC rocks are formed when rocks undergo intense heat and pressure deep under the earth’s surface.
RESOURCES:
Step-by-step directions for the crayon rock cycle are here: littlebinsforl...
Types of rocks: kidsloverocks....
The rock cycle (with a helpful diagram): www.cotf.edu/et...
Interactive diagram: www.dkfindout....
Here’s an explanation of the rock cycle for grades 5-8: www.nationalge...
This production is brought to you by the University of Arizona's Community and School Garden Program, and of course, Penny. Thanks to the Thomas R. Brown Foundation, Cox Communications, and the Roche Foundation for their support.
7 май 2020
