Unit 6 Review: Homework

A look back over the whole unit: variation, fossils, extinction, primates, and the line between found and claimed.

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Part A — Key Words / 4

Type the word that fits each clue.

1.
Birds in one flock differ from each other in things like beak depth. What word names those differences?Answer
2.
Individuals with helpful variations survive and leave more young. What is this process called?Answer
3.
Their atoms change to a stable product at a steady rate, and that puts numbers on an age. What are they?Answer
4.
Putting fossils in order by their layers is called what kind of dating?Answer

Short answers. Think back over the unit.

1.
The average beak was measurably deeper after the drought of 1977. What process does that show?Answer
2.
Lamarck's idea was set aside. What is inherited, genes or habits?Answer
3.
Radioactive dating assumes the rate stayed steady. Name one other thing it assumes never changed.Answer
4.
Name one of the book's two ways to save an endangered species.Answer
5.
Which skeleton, found in Ethiopia in 1974, was nearly complete?Answer
6.
About how many years old does the book say Homo sapiens is?Answer

A new sort for the whole unit.

1.
Write FOUND if it was found or measured, or CLAIM if it is a statement about the distant past.
a. A rock layer holds a fish skeleton above a shell.Answer
b. All living things share one ancestor.Answer
c. Uranium in a rock has changed into a measured amount of lead.Answer
d. People are the end of a line that began in the primates.Answer
2.
Why are those two claims a different kind of question from the finds?Answer
3.
Both accounts accept the layers, bones, decay rates and DNA matches as real. Where do they part ways?Answer

Answer each one in one sentence. You mark these yourself against the key.

1.
In one sentence, say how you can tell whether a statement was found or is a claim.Answer
2.
In one sentence, say how each account reads the likenesses between living things.Answer

Done? Check your answers.

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Total / 18

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Notes

Part A — the answers.

Part B — the answers.

Natural selection.
Genes.
The starting amount.
Protect the natural areas where it lives, or breed it in captivity and release the young.
Lucy.
About 300,000 years.

Part C — the answers.

a. FOUND. It can be looked at. b. CLAIM. Nobody watched it. c. FOUND. It was measured. d. CLAIM. Nobody watched it.
Nobody watched them, and no experiment can repeat them.
On what those finds say about the beginning.

Part D — what a good answer includes.

Answers vary. A good answer asks whether you could point at it, measure it or repeat it, and says a claim is about the distant past that nobody watched.
Answers vary. A good answer says common descent reads them as a sign of shared ancestors, and creation reads them as one Designer using a good plan again and again. It does not say which is true.