1st Nine Weeks Earth Science: Question Preview (ID: 7165)

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A deep well or mine shaft goes through which layer or layers of Earth?
a) crust only
b) crust and mantle
c) mantle only
d) crust, mantle, and outer core

What is the Earth's core mainly composed of?
a) iron and nickel
b) iron and coal
c) coal and nickel
d) iron and steel

How do metamorphic rocks form?
a) heat and pressure change the parent rock into the new form
b) layers of sediment are deposited, compacted, and cemented together
c) magma cools
d) erosion

What kind of rock is formed when volcanic lava cools?
a) igneous
b) sedimentary
c) metamorphic
d) hot

How are extrusive rocks formed?
a) lava cooling on the Earth's surface
b) magma cooling below the Earth's surface
c) sediment being deposited, compacted and cemented together
d) heat and pressure

What evidence do scientists have that show the Earth is very old?
a) all of these
b) fossils
c) continental drift
d) radioactive decay in rocks

What do we call a boundary where 2 tectonic plates come together?
a) convergent
b) divergent
c) transform
d) subduction

What would a scientist need to study to get a measure of the ABSOLUTE age of an object?
a) carbon dating of a sample
b) layers of earth (law of superposition)
c) earthquake records
d) the climate of the area where the object was found

What type of rock is sandstone?
a) sedimentary
b) metamorphic
c) igneous
d) it isn't a rock, it's a mineral

How do geologists determine the classification of a rock?
a) They look at how it formed.
b) They look at the color.
c) They look for crystals.
d) They find its density.

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