Earth and the Moon

Question 1

geologic timelines

Answer 1

precambrian eon
paleozoic era
mesozoic era
cenozoic era

Question 2

make up 7/8 of earth’s history

Answer 2

precambrian eon

Question 3

sudden burst of biological diversity as a result of spike in oxygen levels

appearance of invertebrates, bony fishes, amphibious organisms

Answer 3

paleozoic era

Question 4

age of dinosaurs

Answer 4

mesozoic era

Question 5

3 periods of mesozoic era

Answer 5

triassic

jurassic

cretaceous

Question 6

extinction of dinosaurs

Answer 6

theorized to be caused by an asteroid colliding into Earth, covering the atmosphere with soot and toxic gas

Question 7

largest land mammals have begun to evolve

evolution of Man and primates

Answer 7

cenozoic era

Question 8

3 kinds of motion of earth

Answer 8

rotation

revolution

precession

Question 9

spinning of the earth around an imaginary line called axis

Answer 9

rotation

Question 10

earth’s axis

Answer 10

23.5 degeres

Question 11

direction of rotation

Answer 11

west to east (view from equator)

counterclockwise (view from northpole)

Question 12

1 full rotation

Answer 12

one daytime and one nighttime

Question 13

what does rotation do to the shape of the earth

Answer 13

makes it oblate spheroid

Question 14

movement of the earth along its orbit

Answer 14

revolution

Question 15

speed of revolution

Answer 15

around 18 m/s

Question 16

direction of revolution

Answer 16

counterclockwise

Question 17

period

Answer 17

365.25 days

Question 18

day and night are unequal in length

Answer 18

solstice

Question 19

north pole leans FARTHEST away from the sun

sun strikes directly at the tropic of cancer

Answer 19

winter solstice

Question 20

north pole leans NEAREST towards the

strikes directly at the tropic of capricorn

Answer 20

summer solstice

Question 21

day and night are equal in length

Answer 21

equinox

Question 22

when is vernal equinox

Answer 22

march 20-21

Question 23

when is autumnal equinox

Answer 23

september 22-23

Question 24

movement of the Earth revolving alteration in the orientation of its rotational axis

Answer 24

precession

Question 25

phases of the moon

Answer 25

new moon - waxing crescent - first quarter - waxing gibbous - full moon - waning gibbous - third quarter - waning crescent

Question 26

illuminated part faces away from the earth the moon is dark

Answer 26

new moon

Question 27

half of the illuminated part can be seen

Answer 27

1st quarter

Question 28

illuminated part can be fully seen

Answer 28

full moon

Question 29

half of the illuminated part can be seen

Answer 29

third quarter

Question 30

shape of the moon (illumination) is increasing

Answer 30

waxing

Question 31

shape of the moon (illumination) is decreasing

Answer 31

waning

Question 32

crescent

Answer 32

unilluminated part > illuminated part

Question 33

gibbous

Answer 33

illuminated part > unilluminated part

Question 34

phenomenons where the earth, moon and sun fall in the same line

Answer 34

eclipse

Question 35

solar eclipse

Answer 35

sun-moon-earth

Question 36

lunar eclipse

Answer 36

sun-earth-moon

Question 37

the celestial body is completely within the umbra

Answer 37

total eclipse

Question 38

darkest part

Answer 38

umbra

Question 39

the celestial part is partially in the umbra and extends to penumbra

Answer 39

partial eclipse

Question 40

lightest part

Answer 40

penumbra

Question 41

rise and fall of sea levels influenced by the combined gravitational forces exerted by the moon, sun and rotation of earth

Answer 41

tides

Question 42

gravitational pull of sun and moon combine results in high high-tides and low low-tides happens during new moon and full moon

Answer 42

spring tide

Question 43

sun and moon work at the right angles, causing the bulges to cancel out results in smaller difference between high and low tides happens during moon's quarter phases

Answer 43

neap tide

Question 44

models of the solar system

Answer 44

geocentric theory and heliocentric theory

Question 45

geocentric theory

Answer 45

earth is at the center of solar system

Question 46

heliocentric theory

Answer 46

solar system revolves around the sun

Question 47

lone natural satellite of earth rotation and revolution are simultaneous, thus, only one side is visible on earth lower gravitational force than earth, objects weigh lighter originated from a large body crashing into the proto-Earth, ejecting molten material which cooled into the moon

Answer 47

the moon