True or False
Scientists know exactly what the inner layers of earth are made of
Colour of fine powder of mineral
Streak
A mineral has ____________ if it has many irregular surfaces when it is broken.
fracture
Convection currents in the outer core probably cause the magnetic field of earth
True
intrusive
If metamorphic rocks have layers of minerals the term __________ is used to describe them.
foliated
If you find the same mineral in different parts of the world, it will have a different crystal structure
False - If you find the same mineral in different parts of the world, it will have the same crystal structure
Boundary between crust and mantle
moho
_______________ is the name for magma that reaches the surface and brings to flow.
lava
All igneous rocks are formed inside of Earth
F - Some igneous rocks are formed inside of Earthe
semi-molten layer
asthenosphere
Calcite and fluorite both break with flat, shiny surfaces because they both have the property of _____________.
cleavage
Both igneous and sedimentary rocks can become metamorphic rock if they are acted on by heat and pressure in Earth
True
Sediments pressed together
cementation
Rigid ______________ of the crust float on the lithosphere.
Plates