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Geologic Time

Test Description: Geologic Time

Instructions: Answer all questions to get your test result.

1) What do scientists believe caused the extinction of the dinosaurs?

Aa long drought Bthe appearance of man Cthe increase in numbers of mammals Da large object from space hitting the Earth

2) Which vertebrate did not live during the time of the dinosaurs?

Aalligators Bbirds Cman Dfish

3) What is the best evidence that many different geologic periods are represented in Virginia?

Athe amount of chemical weathering Bthe length of its rivers Cthe presence of fossils of different ages Dthe location of the Piedmont

4) Compared to the Rocky Mountains, the Appalachian Moutains are much

Ahigher Bolder Cless eroded Dthicker

5) Which of these is the best evidence that the Earth's crust has undergone some major changes?

ADepletion of oxygen in lakes and rivers BOcean currents CLand forms carved by glaciers in temperate (warm) regions DMagnetic reversals in layers of rock

6) Of the following, the largest divison of the geologic time scale is

Aan era Ba year Can epoch Da period

7) Which of these is the best evidence that the Earth's crust has undergone some major changes?

Athe presence of marine fossils in mountain rock Bthe amount of available water on Earth Cthe location of major rivers Dthe arrival of the vernal equinox

8) Of the following, the smallest division on the geologic time scale is

Aa period Ban epoch Can era Da year

9) What era do we live in?

ACenozoic BMesozoic CPaleozoic DCambrian

10) How old do scientists believe the Earth is?

A4.6 Million years old B4.6 Billion years old C2.6 Billion years old D3.6 Million years old

*select an answer for all questions

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