Science test

Question 1

what usually has the greatest infulurnce in causing tides

Answer 1

the moon

Question 2

what is the alternating rise and all of local sea level

Answer 2

tides

Question 3

the moon’s gravity causes the oceans to rise on the far side of teh earth

Answer 3

false

Question 4

how many tides do most coasts experiene in a typial 24 hour peroiod

Answer 4

2 highs 2 lows

Question 5

the very high tides that occur twice a month are cuased by what

Answer 5

sun moon earth straight line

Question 6

wwice each month lower than usaully tides called _____ occur

Answer 6

neap tide

Question 7

what is a lower than usual tide that occurs twice a month

Answer 7

neap tide

Question 8

what is a higher than usual tide that ocurrs twocie a month

Answer 8

spring tide

Question 9

power plants designed to harness the power of tidal changes are relatively fw in number

Answer 9

true

Question 10

ocean currents driven by global winds are mainly dubsurface curretns

Answer 10

fale

Question 11

currents are affected by the roatioinn of the earth

Answer 11

true

Question 12

what is a circular flow of currents with an ocean basin called

Answer 12

gyres

Question 13

if you wanted to sail around the globe but wanted to remain south of africa and south america what curent could you use to speed up your trip

Answer 13

antartic circumpolar current

Question 14

the major warm current located in the west atlanitic ocean is that what

Answer 14

gulf stream

Question 15

which of these combines the effects of the coriolis effect current speed and water depth to produce the direction of a current coastal downwilling ocsiation denity currrents or ekman spiral

Answer 15

ekman spiral

Question 16

the great pacific garbage path is the resutl of mans carlesssness and a strong ocenaic

Answer 16

gyres

Question 17

cold ocean currents along a cost can dry the air so much tthat a desert forms

Answer 17

true

Question 18

upwelling has wbeen observed only near teh equator due to its lowr than average sea level

Answer 18

false

Question 19

in the center of an ocean gryere the sea lvel is usually _____ than ouside the gyre

Answer 19

higher

Question 20

upwilling is ofen assocaited with very productive fisheries

Answer 20

true

Question 21

what is cod water rising to the surface called

Answer 21

upwelling

Question 22

water that is froced down by downwellling typically has __________ oxygen but ______ nutrients

Answer 22

more ; less

Question 23

which of these would have the least effect on subsurface currents downwelling gravity or prevaling winds

Answer 23

prevaling winds

Question 24

A ________ current is a type of density current that carries a great mount of sediment and like an underwater mudslde

Answer 24

turbidity

Question 25

which of these is not a term that would appy to thermohaline currents density curretns subsurfaccurrents countercurrents

Answer 25

counter currents

Question 26

what is the lowest part of the wave called

Answer 26

trough

Question 27

wae height is the vertical distance between the crest and the wave base

Answer 27

false

Question 28

which of theese is deined as the deepest depth below teh ocena's surface taht is affected by the ewaves passage wave base height or period

Answer 28

wave base

Question 29

the ______ of a series of waves is te hroizontal distance from the crest of one wave to the crest of the next wave

Answer 29

wavelentgth

Question 30

which of these is most drie clty related to wave speed wave ampltude angle base or period

Answer 30

wave period

Question 31

the distace that wind blows over the waters surface in one driection is the _______ f a wave caused aby the wind

Answer 31

fetch

Question 32

tsunamis are called tidal waves becauese they are caused by lunar tides

Answer 32

false

Question 33

an unstable wave whose crest is falling forward

Answer 33

breaker

Question 34

what is a curent that rsulsts from waves breakinga t an angle to the shore

Answer 34

longshore current

Question 35

groins are sometiems consturced along coasltiens to reduce beach erosion

Answer 35

true

Question 36

a _______ is a column of rock that has been ut off from the mainland by erosion

Answer 36

stack

Question 37

what isa spit with a sharp bend

Answer 37

hook

Question 38

what is a wave deposit that connects to an island or a stack with the mianlan called

Answer 38

tombolo