Question

Which is correct about the effectiveness of carbon datig?


A)It only works for rocks that formed more than about 60,000 years ago.

B)It only works for rocks that formed more than about 6,000 years ago.

C)It only works for organisms that died less than about 60,000 years ago.

D)It only works for organisms that died less than about 6,000 years ago
Answer
explain
Answer

Which statement is correct about carbon dating and index fossils?

A)Carbon dating is used for absolute dating, but index fossils are not.

B)Index fossils are used for absolute dating, but carbon dating is not.

C)They are both used to determine the absolute ages of rocks and fossils.

D)They are both used to determine the relative ages of rocks and fossils.
Answer
u sure?
Answer
Which statement explains why ammonites are a good example of an index fossil?(1 point)
Responses

A)Ammonites existed for a relatively limited period of time.

B)Ammonites existed only in the oceans.

C)Ammonites existed in a small geographic area.

D)Ammonites existed long before the dinosaurs.
Answer
Which statement explains why ammonites are a good example of an index fossil?(1 point)
Responses

A)Ammonites existed for a relatively limited period of time.

B)Ammonites existed only in the oceans.

C)Ammonites existed in a small geographic area.

D)Ammonites existed long before the dinosaurs.


explain
Answer
What is the theory that describes the movement of landmasses on Earth’s surface?(1 point)
Responses

A)subduction

B)divergence

C)plate tectonics

D)continental drift
Answer
u sure
Answer
How does the fern Glossopteris provide evidence for the movement of the continents?(1 point)
Responses

A)It is the oldest plant on Earth.

B)It was found on many continents.

C)It existed in the Permian period.

D)It lived at the same time as Lystrosaurus.
Answer
Which is a result of Earth’s magnetic poles reversing over time?(1 point)
Responses

A)distinct bands in rocks that contain magnetic particles

B)high amounts of iron found in ocean rocks

C)magma rising to the ocean floor at mid-ocean ridges

D)volcanoes occurring at tectonic plate boundaries

EXPLAIN
Answer
How are earthquakes at continental plate boundaries different from earthquakes at mid-ocean ridges?(1 point)
Responses

A)They are longer in duration.

B)They are shorter in duration.

C)They begin deeper in Earth’s crust.

D)They begin closer to Earth’s surface.
Answer
Which describes ocean rocks that are found near mid-ocean ridges?(1 point)
Responses

A)They are younger and form through the cooling of magma.

B)They are older and form through the cementation of sediments.

C)They are older and form through the cooling of magma.

D)They are younger and form through the cementation of sediments.

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