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Karla Montesinos > Science 3.3 > Flashcards

Science 3.3 Flashcards

0
Q

A fossil in which an impression of an organism

A

mold fossil

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1
Q

A fossil in which the hard parts of an organism is a?

A

A petrified fossil

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2
Q

A fossil in which a mold fossil is filled with minerals

A

cast fossil

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3
Q

A fossil made by an imprint left behind by an organism

A

trace fossil

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4
Q

a fossil in which the actual bone and/or tissue of an organism is preserved

A

true form fossil

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5
Q

extinct marine insects that were plentiful during the early Paleozoic Era

A

trilobites

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6
Q

the sudden increase in the diversity of life at the beginning of the Paleozoic Era

A

Cambrian Explosion

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7
Q

The process in which one substance changes into another substance.

A

radioactive decay

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8
Q

the idea that older rocks are typically found deeper in the Earth than younger fossils

A

principle of superposition

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9
Q

the time it takes for half of one element to transform into another element

A

half-life

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10
Q

an element that decays into another element

A

parent element

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11
Q

an element that is formed when another element decays

A

daughter element

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12
Q

a visual record of Earth’s history

A

geologic time scale

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13
Q

a collection of dust and gas that can form planets and stars

A

nebula

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14
Q

small land masses that appeared during the Archeon Eon

A

protocontinents

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15
Q

Which were the first vertebrates?

A

Fish

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16
Q

The Mesozoic Era is known as the age of the ____________________.

A

Reptiles

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17
Q

How old do most scientists think the Earth is?

A

4.6 billion years

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18
Q

Which animal is responsible for the Oxygen Catastrophy?

A

Cyanobacteria

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19
Q

Carbon 14 decays into which element?

A

Nitrogen

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20
Q

Which is an example of a true form fossil?

A

Animal in Amber
frozen mammoth,
mummy dinosaur,
bones in La Brea tar pits

21
Q

How long was the Precambrian Era?

A

3.93 billion

22
Q

During which eon did the oceans form?

A

Archean Eon

23
Q

Uranium decays into what?

A

Lead

24
Q

During which eon did it first begin to rain?

A

Archean

25
Q

During which era did fish first appear?

A

Paleozoic Era

26
Q

Dinosaurs existed during which era?

A

Mesozoic Era

27
Q

What is do most scientists think happened at the end of the Mesozoic?

A

A mass extinction

28
Q

What advantages did reptiles have over amphibians?

A

stronger lungs
leathery skin
leathery eggs

29
Q

During which era did reptiles first appear?

A

Paleozoic Era

30
Q

During which eon was the Earth molten rock?

A

Hadean

31
Q

During which eon did multicellural life first appear?

A

Proterozoic Era

32
Q

Which of the following means “visible life?”

A

Phanerozoic

33
Q

What is the current geologic era?

A

Cenozoic

34
Q

Which type animal did not exist during the Paleozoic Era?

A

Mammals

35
Q

List the four geological eons in order.

A

Hadean, Archean, Proterozoic, Phanerozoic

36
Q

During which eon was the earth first oxygenated?

A

Archean Eon

37
Q

What era is know as the age of the mammal?

A

Cenozoic

38
Q

During which eon did life first appear?

A

Archean Eon

39
Q

What is the name give to the period in which cyanobacteria produced a large amount of oxygen that killed off animals that thrived in low oxygen environments?

A

Oxygen Catastrophe

40
Q

What is the name of the ancient super continent which was made up of all current continents?

A

Pangea

41
Q

Which type of reptiles only have openings in the skull for their eyes and nose?

A

Anapsids

42
Q

Which type of reptiles have two pairs of temporal opening in their skulls?

A

Diapsids

43
Q

How do most scientists believe dinosaurs died out?

A

Giant Asteroid

44
Q

Why did mammals become so plentiful during the Cenozoic era?

A

There were fewer large reptiles to eat them and compete for food.

45
Q

What is the brittle whitish yellow element found in asteroids?

A

Iridium

46
Q

What do we call a period of cold and glaciation?

A

Ice Age

47
Q

Why were mammals able to survive an asteroid hit while dinosaurs were not?

A

They were much smaller and didn’t need as much food.

48
Q

During which era did insects first appear?

A

Paleozoic Era

49
Q

What evidence is there for a massive asteroid killing off the dinosaurs?

A

Iridium

Giant Crater

50
Q

What human attribute helped man survive prehistoric times?

A

Our intelligence

Karla Montesinos (15 decks)

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