Science
• Science is a method of ANSWERING
QUESTIONS about the natural world.
• Scientists look for PATTERNS.
• Are any patterns found a COINCIDENCE?
• If patterns are not a coincidence, what
CAUSES them?
• How does the world work? (How does this
part work?
The World Map
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Look at the World Map on the wall.
See any obvious patterns?
Are those patterns a coincidence?
Did most geologists think that the pattern was
a coincidence?
• What scientist thought that this pattern was
not a coincidence?
– Alfred Wegener
– What did Wegener do since most other scientists
didn’t agree with him?
Guide = Index Fossils
• 1. Only lived on Earth a short period of
time.
• 2. Are easy to recognize.
• 3. Had a wide geographical distribution.
Relative Age versus Absolute Age
• 1. Compares two
• 2. Uses terms older or
younger
• 1. Gives actual number
OR information that
allows you to find the
number.
• 2. Numbers DO NOT
have to be exact.