The Paleozoic is a(n)
The largest units of geologic time are the
The largest units of geologic time are the
Wood from an ancient stump has a ratio of carbon-14 to carbo…
Wood from an ancient stump has a ratio of carbon-14 to carbon-12 that is one-eighth that of new wood. About how old is the stump? (Carbon-14’s half-life is 5730 years.)
Stromatolites are structures created by
Stromatolites are structures created by
Another name applied to the grain size in a rock is
Another name applied to the grain size in a rock is
Four kinds of metamorphism are
Four kinds of metamorphism are
Laccoliths and sills are examples of ______________ plutons.
Laccoliths and sills are examples of ______________ plutons.
Molten rock material on Earth’s surface is called
Molten rock material on Earth’s surface is called
The ______________ angle added to the altitude angle equals…
The ______________ angle added to the altitude angle equals 90°.
The actual amount of time it takes for Earth to rotate 360°…
The actual amount of time it takes for Earth to rotate 360° on its axis is called a