Practical Uses
Name a practical use for obsidian
jewlery or sharp edge
A rock made from cooling lava
Igneous Rock
How are extrusive igneous rocks formed?
Magma erupts from a volcano which cools, and then over time forms into extrusive igneous rocks on the surface of a volcano.
The scale used to define hardness of a rock
Moh's Scale
Give a rock pun
I can't its too hard
What are practical uses for minerals?
Lots of options
A rock formed from the gathering of grains of rocks over million of years
Sedimentary Rock
Explain how lava could turn into a piece of sandstone.
Lava would erupt from a volcano and cool over time. This would then form an igneous rock. Ove the span of millions of years, this would erode and the sediments would mold together to become sandstone.
The term used to describe the physical appearance of a rock
Lustre
What is Rocky Balboa's career?
Boxer
Name a sedimentary rock and a practical use for it
Oil and coal form in sedimentary rocks
Granite is a common example of this type of rock
Igneous Rock
What are some physical differences between intrusive and extrusive igneous rocks?
Extrusive cool quickly, forming small crystals
Intrusive cool slowly, forming large crystals
An example of a rock that reacts with acid
Marble or Limestone
What is the biggest rock in the world?
Uluru
What's pumice used for?
Abbrasive in cleaning supplies
Construction materials
Floating
Igneous Rocks
Describe the process of the rock cycle (including the mechanisms of how each rock changes)
Lava -> Igneous (cooling over time)
Igneous -> Metamorphic (heat and pressure)
Metamorhpic -> sedimentary (erosion, wind & water)
Sedimentary -> lava
List three physical or chemical features of rocks
Lustre, hardness, reacts with acid, crystal size, shape, colour etc.
What is Mr. Ting's favourite sport?
Volleyball
Name a metamorphic rock and a practical application
Quartz: oscillators in radios, watches, and pressure gauges, study of optics, sand blasting, grinding glass etc.
Name two examples of igneous, metamorphic, and sedimentary rocks
Igneous: Granite, basalt, obsidian etc.
Sedimentary: Sandstone, limestone, shale etc.
Metamorphic: marble, gneiss, talc
Describe the process by which boulders are formed
Magma formed from the uppermantle would have solidified as it reached the surface of the earth. Uplift and techtonic activity would cause large rocks to appear, which would be subject to weathering and erosion over time.
A rock type that likely contains fossils
Sedimentary rocks
Dwayne 'The Rock' Johnson's original career before he was an actor was what?
A WWE superstar