S7L5C

We can use the order of layers of rock to determine their relative ages. This ability is based on which of the following laws?

• Law that states if rock is undisturbed, the oldest layers will be on the bottom and the youngest layers will be on the top. (law of superposition)

• Law that states that sedimentary rock is deposited horizontally. (law of original horizontality)

• Law that states matter cannot be created nor destroyed. (law of conservation of matter)

• Law that states energy cannot be created nor destroyed. (law of conservation of energy)

Tags

NGSS.MS-ESS1-4

What is the best explanation for why there is no oceanic crust older than 180 million years old, yet we have found continental crust that is 4.2 billion years old?

• Oceanic crust didn't start forming until recently

• Oceanic crust takes longer to form so it is younger

• Oceanic crust is constantly being recycled at seafloor trenches, so the oldest oceanic crust has long since been destroyed.

Tags

NGSS.HS-ESS1-5

Which of the following statements is true based on the diagram above?

• The fault P is older than layers Q, O, N, M, and L

• Layer I is older than layer H.

• Layer Q is the youngest layer.

• Layer H is younger than fault P

Tags

NGSS.MS-ESS1-4

Which of the following patterns is observed when examining a map of the age of the seafloor?

• oldest crust is at mid-ocean ridges, as you move away the crust gets younger and younger

• youngest crust is at mid-ocean ridges, as you move away the crust gets older and older

• the age of the seafloor is the same everywhere

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NGSS.MS-ESS2-3

List the steps of the scientific method

d

e

f

c

b

a

Form a hypothesis

Analyze results

Draw conclusions

Communicate results

Conduct experiment

Ask a question

Tags

NGSS.MS-PS2-2

Which of the following are considered evidence that can be used to reconstruct Earth's history? Select all that apply.

• type and order of rock strata

• the fossil record

• evidence of ancient mountain ranges

• evidence of past glaciation

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Why does an ocean plate subduct under the continental plate?

• a.because the continental crust is more dense

• b.because convection is pushing the ocean plate into the continental plate

• c.because the continental plates are drifting on the continental crust

• d.because the oceanic crust is more dense

• both b & d

Tags

NGSS.MS-ESS2-3

Which of the following are examples of evidence that scientists use to determine the order of events in Earth's history in the geologic time scale? Select all that apply.

• order of the layers

• key beds

• index fossils

• radiometric dating

Tags

NGSS.MS-ESS1-4

Which of the following provides evidence of plate motion? Choose all that apply.

• shapes of the continents

• fossils of the same species found on multiple continents

• the age distribution of basalt at mid-ocean ridges.

• the size of the continents

Tags

NGSS.MS-ESS2-3

If an index fossil known to be 300 million years old is found in a layer of rock, which of the following is the best conclusion based on this find?

• the other fossils in that layer are about 500 million years old.

• the other fossils in that layer are about 100 million years old.

• the other fossils in that layer are about 300 million years old.

• the other fossils in that layer are all different ages.

Tags

NGSS.MS-ESS1-4