Unit 4 Review (extra credit)

Which layer of rock strata is the youngest?

• 1

• 2

• 3

• 4

• 5

Answer explanation

According to the Law of Superposition, the youngest rock layer is on top, and the oldest is on the bottom!

Tags

NGSS.MS-ESS1-4

Which answer has the correct order of layers? (from oldest to youngest)

• ABCDEF

• FEDCBA

• FADCBE

• ACEBFD

• ABCFED

Tags

NGSS.MS-ESS1-4

Define: Index fossil

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Answer explanation

Dictionary definition: a fossil usually with a narrow time range and wide spatial distribution that is used in the identification of related geologic formations

Fun fact: The picture to the left is a trilobite, a well-known index fossil that first arised in the Cambrian Period.

Tags

NGSS.MS-ESS1-4

Which row has the best index fossil?

• A

• B

• C

Answer explanation

The second fossil in A: It only appears in one row, and shows up in every column.

Tags

NGSS.MS-LS4-1

When two organisms that homologous structures, it means they have _____ structures.

Tags

NGSS.MS-LS4-2

When two organism in the embryonic stage have homologous structures, it likely means they have a ______ ancestor.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

Which feature do both embryos display that only one will retain after birth?

• Scales

• Gill pouches

• Head

• Tail

Tags

NGSS.MS-LS4-2

Which of the following is an example of NATURAL selection?

• Dinosaurs went extinct.

• Humans prefer white cats over black cats, so they only breed white cats.

• A cactus without spikes is eaten because it has no method to ward off predators while the cactus with spikes lives on and produces offspring.

• A group of mice grew wings so they could travel longer distances.

Answer explanation

Key word: NATURAL. Natural selection is all about survival of the "fittest", not survival of who humans like more.

Tags

NGSS.MS-LS4-4

When the climate becomes warmer, some animals _____ leaner bodies and bigger noses to let off maximum heat. This is an example of _____ation.

Tags

NGSS.MS-LS4-4

Why are is colorblindness more common in males?

• It's not, it's more common in females because they have 2 x chromosomes; two chances for colorblindness.

• Because they only have one copy of the x chromosome, they only have one chance to get a working one.

• Because females don't have the y chromosome, and colorblindness can only be passed down through the y chromosome.

• Colorblindness is a conspiracy.

Answer explanation

I really hope you got the right answer for that one.

Tags

NGSS.HS-LS3-1