Today’s science lesson was all about rocks! After briefly reviewing the different layers of the Earth, students learned all about the Rock Cycle and the three main categories of rocks (sedimentary, igneous and metamorphic). We discussed how all the rocks on the earth are constantly changing due to weathering and changes in pressure and temperature. By examining and identifying samples of different rock types, the students developed a greater understanding for how each rock type is formed. They also learned the differences between minerals and rocks and were introduced to Massachusetts’ state rock, the Roxbury Puddingstone, a stone used for building in the Boston/Roxbury area.
Additional Information:
This YouTube video offers a fun review of the three rock types. It’ll make you hungry to learn about rocks! http://www.youtube.com/watch?v=pg_jKJFbA2A
Also, for another AWESOME rock song: https://www.youtube.com/watch?v=K_FpzAOlqZc
And the lyrics: http://lyrics.wikia.com/Bill_Nye:Rocks_Rock_Harder
“Made by pressure, heat, and water.
We rock hard, but rocks rock harder!”
Questions:
Explain how granite (a igneous rock) can be turned into gneiss (a metamorphic rock).
How do sedimentary rocks form?
Any rock can be transformed through pressure, heat and chemicals (as said in verse 3 of the “Rock Cycle Song”) to make metamorphic stones.
Sedimentary rocks are formed by particles of sediment being compacted together.
i think its cool that you can make a rock out of candy
This is very true. Metamorphic stones undergo metamorphosis, which is another word which means change or transformation!
Sedimentary rocks are formed by rock particles gathering up over time and pushed together to form the layers.
Yes, exactly! They are made from sediments, which is a fancy word for rock particles!
Exactly! I’m so glad that the words of the song are helping you to make sense of the Rock Cycle. You will never look at rocks the same way again!