Types of Rocks
What type of rock forms from the rapid cooling of magma?
Igneous
What is the thinnest layer of the Earth?
Crust
What is the name of a combination of two or more substances that are not chemically combined?
Mixture
Plate Tectonics involves which layer of the Earth?
Crust
True or False: Rocks have one pathway through the rock cycle.
False! Rocks can transform in many different ways.
What type of rock has wavy layers?
Metamorphic
What is the thickest layer of the Earth?
Mantle
What is the name of a combination of two or more substances where one substance is evenly dispersed and dissolved in another substance?
Solution
What does a convergent boundary create?
Mountains or deep ocean trenches
What type of rock forms due to heat and pressure within the Earth?
Metamorphic
You find a rock that has a rough surface with lots of small grains. What type of rock is it?
Sedimentary
What is the center of the Earth called?
Inner Core
What makes a solution different than a mixture?
Solutions cannot be easily separated.
What does a transform boundary create?
Earthquakes
How does sedimentary rock form?
Rocks are weathered and eroded, and then compacted and cemented.
Granite, quartz, and obsidian are examples of which type of rock?
Igneous
What happens as you move deeper into the Earth?
Name three examples of solutions.
Salt water, soda, tea, cleaning spray, etc.
What does a divergent boundary create?
Underwater ridges and volcanoes
What is the difference between weathering and erosion?
Weathering is the breaking down of rocks. Erosion is the movement of those broken materials from one place to another.
Why are fossils found in sedimentary rock?
Plant or animal remains get covered by sand/silt over time. The layers compact and cement together, preserving the fossil.
What effect does the movement of the Earth's crust have?
Tectonic movements can cause earthquakes, volcanic eruptions, and lead to the formation of mountains, trenches, or ocean ridges.
Is chicken noodle soup a mixture or a solution?
It is both! The large pieces (chicken, carrots, celery, etc.) can be separated (mixture) but the broth itself forms a solution (dissolved salt, fat, etc.).
What evidence supports the theory of plate tectonics?
The continents fit together like puzzle pieces (Pangea) and similar fossils have been found on different continents.
Which type of rock can form quickly? Where does this happen?
Igneous-- volcanic eruptions