EARTH SCIENCE MONDAY

Question 1

chronological measurement that relates stratigraphy to time.

Answer 1

GEOLOGIC TIME SCALE

Question 2

glaciation in northern hemisphere

Answer 2

PLEISTOSCENE

Question 2

100 million years

Answer 2

PERIOD

Question 2

billions of years

Answer 2

EON

Question 2

several 100 million years

Answer 2

ERA

Question 2

millions of years

Answer 2

AGE

Question 2

mammals and birds begin to replace dinosaurs

Answer 2

PALEOSCENE

Question 2

humans dominate Earth

Answer 2

HOLOCENE

Question 2

tens of millions of years

Answer 2

EPOCH

Question 3

flowering plants begin their domiance

Answer 3

CRETACEOUS

Question 4

age of dinosaurs and ammonites

Answer 4

JURASSIC

Question 5

abundant swamps that created coal deposits

Answer 5

PEENSYLVANIAN

Question 6

abundant land plants and animals

Answer 6

MISSISSIPIANS

Question 7

age of fishes and brachiopods

Answer 7

DEVONIAN

Question 8

age of trilobites

Answer 8

CAMBRIAN

Question 9

1.3 billions years ago first rocks found at sterling hill formed. A majority of life invisible to the naked eye

Answer 9

PROTEROZOIC EON

Question 10

age of prokaryotes. aLL life invisible to the naked eye

Answer 10

ARCHEAN EON

Question 11

extraterrestrial information indicates a high - temperature earth adverse to life.

Answer 11

HADEAN EON

Question 12

earliest part of earth . newly formed planet beginning to cool

Answer 12

HADEAN ERA (4.6 - 4.0 BYA )

Question 13

plate tectonics allowed crystal building and the formation of volcanic belts and sedimentary basins

Answer 13

ARCHAEAN ERA ( 4.0 - 2.5 BYA )

Question 14

means early life

Answer 14

PROTEROZOIC

Question 15

the rifitng of the continental crust and its subsequent filling with sedimentary volacanics rocks occured

Answer 15

PROTEROZOIC ERA ( 2500 MYA - 540 MYA )

Question 16

means old life

Answer 16

PALEOZOIC

Question 17

means middle life

Answer 17

MESOZOIC

Question 18

means new life

Answer 18

CENOZOIC

Question 19

beginning of life

Answer 19

PALEOZOIC (540 MYA - 260 MYA )

Question 20

indicated the sudden abundance of complex organisms with hard parts in the fossil record . also known as cambrian explosion

Answer 20

PALEOZOIC ERA

Question 21

age of dinosaurs . various dinosaur species dominated the planet. New trees and conifers appeared and mammals began to emerge

Answer 21

MESOZOIC ERA ( 245 MYA - 66 MYA )

Question 22

known as age of recent life. Youngest era and has the most complete geological record of rocks. Life forms continued to become more complex

Answer 22

CENOZOIC ERA ( 66 MYA TO PRESENT TIME )

Question 23

protons plus neutrons

Answer 23

MASS NUMBER

Question 24

protons

Answer 24

ATOMIC NUMBER

Question 25

2 protons / neutrons are emitted and new eleemnt were formed

Answer 25

ATOMIC DECAY

Question 26

time needed for half of a sample of a radioactive substance to undergo changes

Answer 26

HALF LIFE

Question 27

eleemnts with same protons but different neutron

Answer 27

ISOTOPES

Question 28

positively charge

Answer 28

PROTONS

Question 29

parent isotopes that are unstable

Answer 29

RADIOACTIVE ISOTOPES

Question 30

unstable and decays

Answer 30

PARENT

Question 31

stable and doesnt decay

Answer 31

DAUGHTER

Question 32

determining numerical age of rocks using radioactive decay

Answer 32

ABSOLUTE DATING

Question 33

radioactive isotopes found in fossil or rocks are used

Answer 33

RADIOMETRIC DATING

Question 34

used for fossils

Answer 34

CARBON 14

Question 35

used for rocks

Answer 35

URANIUM 238

Question 36

isotopes are?

Answer 36

10 NATURAL 19 ARTIFICIAL

Question 37

potassium argon dating

Answer 37

POTASSIUM 40 / 100 K YEARS

Question 38

uranium lead dating

Answer 38

URANIUM 238 / 10 MIL YEARS

Question 39

rubidium strontium

Answer 39

RUBIDIUM 87/ 10 MIL YEARS

Question 40

carbon 14 dating

Answer 40

CARBON 12 - 14 / 50 K YEARS