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EarthScience > INTRODUCTION- EarthSci > Flashcards

INTRODUCTION- EarthSci Flashcards

1
Q

What are the 4 subsystems of the Earth?

A
  1. Atmosphere (Gaseous)
  2. Biosphere (Life)
  3. Hydrosphere (Water)
  4. Geosphere (Land)
    (GHAB)
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2
Q

Meaning of Earth Science.

A

Earth Science is the study of the Earth’s structure, processes, properties, and its neighboring planets.

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3
Q

What are the four major branches of Earth Science?

A
  1. Geology
  2. Oceanography
  3. Meteorology
  4. Astronomy
    (GOMA)
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4
Q

The first general term for the first continents.

A

Cratons

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5
Q

The first planet that collided with Earth.

A

Theia

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6
Q

The first photosynthesizers.

A

Cyanobacteria

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7
Q

What was the first biggest supercontinent?

A

Rodinia

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8
Q

What was the last supercontinent?

A

Pangea

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9
Q

What were the animals with shells or spines called 1.1 Billion yrs ago?

A

Trilobites

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10
Q

This supercontinent was formed after Rodinia and before Pangea

A

Pannotia

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11
Q

What were the 4 Major Extinctions that happened?

A
  1. Ordovician
  2. Devonian
  3. Permian
  4. Triasic
    (ODPT)
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12
Q

What are the three Major Theories of the origin of the Universe?

A
  1. Big Bang Theory- Georges Lemaitre
  2. Steady State Theory- Hermann Bundi
  3. Pulsating Theory- J.C. Bose
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13
Q

What are the 4 major stages/phases of History of Earth?

A
  1. Precambrian, 4.6 Billion yrs ago
  2. Paleozoic, 542 Million yrs ago
  3. Mesozoic, 250 Million yrs ago
  4. Cenozoic, 65 Million yrs ago
    (PPMC)
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14
Q

What heavenly body occurred after the Big Splash/ Theia collision against Earth?

A

Moon

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15
Q

What was found in Earth when Earth had cooled down 3.8 Billion yrs ago?

A

Water

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16
Q

What was the star called after it was born in 4.5 Billion yrs ago?

A

Sun

17
Q

A wide variety of animals had burst onto the evolutionary scene,1.1 Billion yrs ago, in an event called the?

A

Cambrian Explosion

18
Q

How many yrs ago was the first Ice Age?

A

2.4 Billion yrs ago

19
Q

How many yrs ago was Pangea formed?

A

250 Million yrs ago

20
Q

In general, name the progress of the environment that occurred 6 Million yrs ago?

A
  1. Mammals Existed
  2. Early Humans (Evolution)
  3. Tools and Fire
  4. Interactions and Communities
  5. Industrial and Technology

EarthScience (5 decks)

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