FOSSILS 2

IQ1 What can the record in the rocks tell us?

Practical: Making fossil traces https://www.youtube.com/watch?v=_-qHS09whCk

· to gain understanding of how scientists find fossils, view videos:

· to identify what fossils can tell us:

º view video How do we know what colour dinosaurs were? [4.24]

How do we know what color dinosaurs were? - Len BlochThe microraptor was a four-winged carnivorous dinosaur with iridescent black feathers. But if our information about this dinosaur comes from fossils, how can we be certain about its color? Len Bloch shows how making sense of the evidence requires careful examination of the fossil and a good understanding of the physics of light and color.

3. describe the technique of relative dating.

4. explain what an index fossil is.

5. interpret rock strata diagrams to conclude the relative age of rocks.

7. solve problems relating to the age of fossils

When can the record in the rocks tell us?

Puzzle 1:

Tom is younger than Rose, but older than Will and Jack, in that order. Rose is younger than Susie, but older than Jack. Jack is younger than Jim. Susie is older than Rose, but younger than Jim. Jim is older than Tom. Who is the eldest?

Puzzle 2:

Alex is younger than Cody. Brook is older than Alex. Cody is younger than Dusty. Dusty is older than Alex. How old is Alex

Puzzle 3:

Mary is 2 years older than Ed, and 3 years ago Mary was twice as old as Ed. Find their present ages.

What advantages and disadvantages does Method 1 (Puzzles 1 and 2) have?

What advantages and disadvantages does Method 2 (Puzzle 3) have?

TASK 1.8

View video:

How fossils are dated [4.04]

º What advantages and disadvantages does each method have as it applies to fossils?

º Make notes on correlation, index fossils and fluorine analysis from Tx pp59-61

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