marés

Question 1

tide def

Answer 1

rise and fall of body of water

Question 2

forces that influence tides

Answer 2

gravitational attraction (moon and sun)

centrifuge force (rotation around the sun)

Question 3

what influences more the tide: moon or sun

Answer 3

moon is twice as strong effect

Question 4

what is a tidal day

Answer 4

since the tides are more influenced by the moon, the cycle of the moon that is the lunar day of 24 hours and 50 minutes

Question 5

why does the moon influence the tide

Answer 5

the moon’s gravity pulls on the water

Masses attract other masses proportionally to the mass of the body and inversely proportion of the distances of the bodies (+ close body = + effect)

Question 6

what are spring tides

Answer 6

mares vivas

full moon

max forces of the gravitational forces (sun and moon aligned)

Question 7

Neap tides

Answer 7

mares mortas

1 e 3 quartos da lua

Question 8

moon phases

Answer 8

full
nova

pode demorar 30 dias (depende de onde estou na terra)

Question 9

why does the moon and earth stay together

Answer 9

For the earth–moon
system to remain in orbit around the sun, the gravitational
force must equal the centrifugal force

Question 10

full moon corresponds

Answer 10

spring tides (marés vivas)

Question 11

when is the max gravitational pull

Answer 11

sun and moon aligned

Question 12

lunar day and lunar cycle

Answer 12

day - time it takes for a specific site on the Earth to rotate from an exact point under the moon to the same point. 24H 50m because the moon also rotates

cycle - time to complete 1 full cycle

Question 13

quando há marés mortas (neap tides)

Answer 13

Quarto crescente e minguante

Question 14

tempo alternância entre maré viva e morta

Answer 14

7 dias

Question 15

why are there 2 bulges from opposite sides

Answer 15

1 - moon influence > centrifuge
2 - moon influence < centrifuge

Question 16

quando são as marés mortas

Answer 16

quando o sol e a lua tamos a 90o

a lua, a força centrifugadora e o sol atuam ao mesmo tempo (a força da lua é diminuída pela força do sol)

Question 17

se o sol tem uma grande massa porque é que n tem grande influencia nas marés

Answer 17

devido à grande distância

Question 18

when are the moon and sun aligned

Answer 18

2x a month

Question 19

spring tides are related to spring season

Answer 19

no, it means springing up

Question 20

what are the other factors that influence tides (beyond moon, sun and centrifuge pull)

Answer 20

• seasons - sun’s position
• continents shapes
• ocean basin
• amphidromic points

Question 21

winter and summer solstice influence tides because

Answer 21

the sun is at max declination = its largest angle to the equator

Question 22

in a perfect planet without friction and continents to influence how many high tide should there be in a day

Answer 22

2 high and 2 low
periodicity = 12h 25min

Question 23

why are there places with only one high and low tide

Answer 23

due to continental influence

Question 24

diurnal tide

Answer 24

only one
high tide and one low tide each day

Question 25

spring tides
neap tides

Answer 25

spring - when sun and moon

neap - sun 90º moon

Question 26

semidiurnal

Answer 26

two high tides
and two low tides

Question 27

Mixed tide

Answer 27

less regular

Question 28

the type of tide pattern are fixed in each location

Answer 28

yes

Question 29

estofo

Answer 29

moments of change between high tide and low tide

Question 30

quadratura

Answer 30

The sun and the moon form an angle of 90º in relation to the Earth.
the water moves more in the extremities than in the middle

neap tides

Question 31

amphidromic point

Answer 31

points of null movement in the oceans where the crest of the tide wave rotates during one tidal period.;

branching off these points into other points and locations, ther are lines of co-osclillation of tides/ cotidal lines, where there is a simultaneous high tide

Question 32

synodic period

Answer 32

1 full moon phase

Question 33

Why do amphidromic points occur

Answer 33

Amphidromic points occur because interference within oceanic basins, seas and bays, combined with the Coriolis effect, creates a wave pattern