RELATIVE AGE
A fossil that exists in only 1 rock layer, during a certain period of time, is known as...
an index fossil
What are the 3 main types of rocks?
sedimentary, metamorphic, and igneous
Protons have this type of charge.
Positive.
What is the law of superposition?
youngest at the top, oldest at the bottom
How igneous rock formed?
magma cools, then hardens
Which of the following is a nonrenewable resource?
solar power, hydroelectricity, nuclear energy, wind
nuclear energy
Which is the oldest rock layer?
0
P
R
T
A
A
This type of rock contains shells and fossils.
sedimentary
Which group contains Sulfur?
16
Fossil X is found in 3 rock layers; is it a good index fossil?
no
Small pieces of rock are also known as...
sediment
Water that is both salty and fresh can be described as...
brackish
The law of superposition helps scientists determine...
the relative age of rocks
A rock being broken apart over time by water is an example of...
physical weathering
How many neutrons are contained within one Rhodium atom?
58