Earth Structure & Continental Drift Crossword Puzzle
Download and print this Earth Structure & Continental Drift crossword puzzle. Use a pencil or pen to complete the puzzle by filling in the blanks. The completed answers are included, so you can easily check your progress.
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QUESTIONS LIST:
- lithosphere : this layer of earth is the rigid outer crust.
- sial : this is continental crust.
- less dense : sial is this when compared to sima.
- granite : these are the most common rocks of the continental crust.
- granitic rocks : these rocks are coarse-grained, crystalline igneous rock.
- quartz & mica : granitic rocks contain these as well as alkali feldspar, plagioclase & amphibole minerals.
- sima : this is oceanic crust.
- more dense : sima is this when compared to sial.
- basalt : these are the most common rocks of the oceanic crust.
- basaltic rocks : these rocks are hard, dense, dark-coloured igneous rocks.
- glassy : basalt rocks have this appearance.
- lava flows : basalt rocks form from the solidification of these.
- pyroxene : basaltic rocks are iron-rich, consisting of silicate minerals (primarily _ & plagioclase).
- moho : this is not a layer or zone of earth; it is a boundary between the lithosphere and the asthenosphere.
- mesosphere : this layer of earth is directly below the crust & extends to the outer core.
- mantle : this is another name for the mesosphere.
- periotite : these rocks, found predominantly in the mantle, are high in iron, silicon & magnesium.
