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Study Cards > Science vocab 3 > Flashcards

Science vocab 3 Flashcards

1
Q

What are the longest units of geologic time?

A

Eons

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2
Q

Eons are subdivided into smaller units of time called what?

A

Eras

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3
Q

Eras are subdivided into what?

A

Periods

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4
Q

Periods are divided into what?

A

Epochs

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5
Q

What is the extinction of many species on Earth within a short period of time?

A

Mass extinction

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6
Q

What connects two continents that were previously separated?

A

Land bridge

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7
Q

What is the separation of a population of organisms from the rest of its species due to some physical barrier, such as a mountain range or an ocean.

A

Geographic isolation

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8
Q

What is the oldest era of the Phanerozoic eon?

A

Paleozoic era

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9
Q

What is the middle era of the Phanerozoic eon?

A

Mesozoic era

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10
Q

What is the youngest era of the Phanerozoic eon?

A

Cenozoic era

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11
Q

What is a body of water formed when ocean water floods continents?

A

Inland sea

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12
Q

What is an oxygen-poor environment where, over time, plant material changes into coal?

A

coal swamp

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13
Q

What were dominant Mesozoic land vertebrates that walked with legs positioned directly below their hips?

A

Dinosaurs

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14
Q

What were Mesozoic marine reptiles with small small heads, long necks, and flippers?

A

Plesiosaurs

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15
Q

What were Mesozoic flying reptiles with large, bat like wings?

A

Pterosaurs

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16
Q

What was the most recent epoch that

A

Holocene epoch

16
Q

What was the most recent epoch that began 11,700 years ago?

A

Holocene epoch

17
Q

What was the first epoch of the Quaternary period?

A

Pleistocene epoch

18
Q

What is a time when a large proportion of Earth’s surface is covered by glaciers?

A

Ice Age

19
Q

What are grooves made by rocks carried in glaciers?

A

Glacial grooves

20
Q

What are the large mammals of the Cenozoic era?

A

Mega-Mammals

21
Q

What is an ancient landmass which separated into present day continents?

A

Supercontinent

Study Cards (17 decks)

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