S7 (3) - Fossils

What did the ancient Chinese think fossils were?

• Dragon bones

• Fish

• Ancestors of today's organisms

• Organisms that died recently

What do people in modern times think fossils are?

• Dragon bones

• Fish

• Ancestors of today's organisms

• Organisms that died recently

You notice the fossil of shell. What type of fossil is it?

• Body

• Trace fossil

What is material that settles to the bottom of a liquid called?

• Sediment

• Strata

• Fossil

• Absolute

How common is it for an organism to become a fossil?

• 100% chance

• 10% chance

• 1% chance

• Less than 1% chance

If you find a fossil in a strata, how does the age compare between the two?

• They are the same age

• The strata is older than the pottery

• The pottery is older than the strata

The law of superposition states that:

• Younger layers on on top of older ones

• Older layers are on top of younger ones

• All layers are the same age

Rock layers (strata) always form in what orientation?

• Horizontal (flat)

• Vertical (straight up and down)

• On an angle (not flat or vertical)

Relative dating is based on:

• Stratigraphy

• Radioactive dating

• The absolute age of fossils

• No evidence is needed

With radioactive dating we can get

• Relative ages

• Absolute ages