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• erosion– All the natural processes that
wear away earth and rock
• theory– A widely held scientific explanation
that is based on evidence but cannot be stated as fact.
• excavation– The process of finding something
by digging for it
• extinct– No longer living; having all died
out
• specimens– Samples taken for scientific study
• geologists– Scientists who study rocks and
the earth’s crust
• hypotheses– And educated or scientific guess
based on what we know so far
• paleontologists– A scientist who studies prehistoric
life
Key Background Vocabulary
• erosion– All the natural processes that
wear away earth and rock
• theory– A widely held scientific explanation
that is based on evidence but cannot be stated as fact.
• excavation– The process of finding something
by digging for it
• extinct– No longer living; having all died
out
• specimens– Samples taken for scientific study
• geologists– Scientists who study rocks and
the earth’s crust
• hypotheses– And educated or scientific guess
based on what we know so far
• paleontologists– A scientist who studies prehistoric
life
Key Background Vocabulary
• erosion– All the natural processes that
wear away earth and rock
• theory– A widely held scientific explanation
that is based on evidence but cannot be stated as fact.
• excavation– The process of finding something
by digging for it
• extinct– No longer living; having all died
out
• specimens– Samples taken for scientific study
• geologists– Scientists who study rocks and
the earth’s crust
• hypotheses– And educated or scientific guess
based on what we know so far
• paleontologists– A scientist who studies prehistoric
life
Key Background Vocabulary
• erosion– All the natural processes that
wear away earth and rock
• theory– A widely held scientific explanation
that is based on evidence but cannot be stated as fact.
• excavation– The process of finding something
by digging for it
• extinct– No longer living; having all died
out
• specimens– Samples taken for scientific study
• geologists– Scientists who study rocks and
the earth’s crust
• hypotheses– And educated or scientific guess
based on what we know so far
• paleontologists– A scientist who studies prehistoric
life
Key Background Vocabulary