Types of Rock
What kind of rock is made up of layers of material like sand that have settled on sea beds over time?
List any three physical properties of rock
* Lustre
* Texture
* Shape
* Size
* Weight
* Colour
The hardness of a rock is measured by the _____ Hardness Scale.
Mohs Hardness Scale
This rock results from lots of heat and pressure.
Metamorphic Rock
What is the name for the term that describes the way a rock shines or reflects the light
Lustre
What two things can you test easily with materials found around the home to help you determine what kind of rock you have?
Reaction to vinegar and hardness
Lava rock is an example of what kind of rock?
Igneous Rock
Give the name of a rock that has a smooth texture
Answers may vary
Which kinds of rocks typically fizzle when exposed to vinegar?
Sedimentary Rock
Describe what you might see if you were describing a sedimentary rock
Your rock would be easy to break, you might see stacks, or layers in the rock
Name a rock that is a sedimentary rock
Sandstone, limestone, chalk, conglomerate, shale, etc.
List four materials that you can use (as shown on the Mohs Hardness Scale) to test the hardness of rock
Any of the following: masonry drill bit, steel nail, knife/glass plate, copper penny, fingernail.
Describe two characteristics of an igneous rock
- Random crystal alignment
- The rock might be heavy
What is the difference in the appearance of granite and granodiorite?
Granite has flecks of pink in it from the concentration of potassium feldspar where as granodiorite is typically white and black in colour.
If your rock can be scratched with a copper penny, that means its Mohs Hardness Scale value would be less than ____
3.5