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Pregunta 1
Pregunta
What are tides?
Respuesta
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Periodic, short-term changes in the height of the ocean surface at a particular place
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The constant waves that lap up on a coast.
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A laundry detergent
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A yummy snack. (No. just no.)
Pregunta 2
Pregunta
What causes tides?
Respuesta
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The gravitational force of the Moon, Sun, and Earth
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Wind
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Water Displacement
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Dirty laundry
Pregunta 3
Pregunta
Tide waves are the [blank_start]longest[blank_end] waves on earth: their wavelength is [blank_start]half[blank_end] of the Earth's circumference. These waves are known as [blank_start]forced[blank_end] waves.
Respuesta
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longest
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shortest
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half
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1/3
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1/10
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2/3
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forced
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natural
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rogue
Pregunta 4
Pregunta
The moon's gravity [blank_start]attracts[blank_end] the ocean. Then the Motion of the Earth around the [blank_start]center of mass[blank_end] of the Earth-moon system causes a [blank_start]bulge[blank_end] on the side of the earth [blank_start]opposite[blank_end] the moon. Combined, this creates two [blank_start]bulges[blank_end].
Respuesta
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attracts
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repels
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center of mass
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midpoint
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edge
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bulge
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divot
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bulges
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divots
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opposite
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facing
Pregunta 5
Pregunta
[blank_start]High tides[blank_end]: the bulges are the crests of the planet-sized waves
[blank_start]Low tides[blank_end]: the troughs, the area between the bulges
Respuesta
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High tides
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Low tides
Pregunta 6
Respuesta
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Island exposed
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Island submerged (evening)
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Island high & dry
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Inertia bulge
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Gravity bulge
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Island submerged (morning)
Pregunta 7
Pregunta
Lunar tides:
Respuesta
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tides caused by gravitation & inertial interaction of the moon and Earth
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tides caused by gravitation & inertial interaction of the sun and Earth
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tides caused by Luna Lovegood, because she's great
Pregunta 8
Pregunta
In a 24h solar day, the moon moves [blank_start]12.2[blank_end] degrees eastward. The earth must rotate another [blank_start]50[blank_end] minutes to again place the moon at the highest position.
Respuesta
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12.2
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50
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10.2
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21.2
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50
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12.2
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40
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10
Pregunta 9
Pregunta
The sun has a greater effect on Earth's tide than the moon.
Respuesta
- True
- False
Pregunta 10
Pregunta
[blank_start]Spring tide[blank_end]: when earth, moon, and sun are all in a line. These are [blank_start]additive[blank_end], and correspond to the [blank_start]new and full[blank_end] moons.
[blank_start]Neap tide[blank_end]: When earth, sun, and moon form a right angle. Tide [blank_start]diminishes[blank_end] the lunar tide, and correspond with the [blank_start]quarter[blank_end] moons.
Respuesta
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Spring tide
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additive
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new and full
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Neap tide
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diminishes
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quarter
Pregunta 11
Pregunta
Land masses obstruct tidal crests, diverting and [blank_start]slowing[blank_end] movement. This causes different patterns in the arrival of tidal crests and is influenced by [blank_start]basin shape[blank_end].
Respuesta
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slowing
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quickening
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basin shape
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water depth
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basin depth
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salinity
Pregunta 12
Pregunta
[blank_start]Semidiurnal[blank_end] tides: two high tides and two low tides of nearly equal level each lunar day
[blank_start]Diurnal[blank_end] tides: on high and one low
[blank_start]Mixed semidiurnal[blank_end] tides: successive high tides or low tides are of significantly different heights in the lunar day
Respuesta
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Semidiurnal
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Diurnal
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Mixed semidiurnal
Pregunta 13
Pregunta
Amphidromic points:
Respuesta
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nodes at the center of ocean basins, no-tide points
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nodes at the center of ocean basins, high-tide points
Pregunta 14
Pregunta
Tidal ranges increase with increasing distance from amphidromic points
Respuesta
- True
- False
Pregunta 15
Pregunta
Water flow into or out of bays and harbors is known as...
Respuesta
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tidal current
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tidal flow
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waves
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tidal waves
Pregunta 16
Pregunta
[blank_start]Flood current[blank_end]: water rushing into an enclosed area because of the rise in sea level as a tide crest approaches
[blank_start]Ebb current[blank_end]: water rushing out because of the fall in sea level as the tide trough approaches
[blank_start]Slack water[blank_end]: a time of no currents, occurs at high and low tides when the current changes direction
Respuesta
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Flood current
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Ebb current
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Slack water
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Tide current
Pregunta 17
Pregunta
Tidal friction is gradually slowing the Earth's rotation.
Respuesta
- True
- False
Pregunta 18
Pregunta
What is the intertidal zone?
Respuesta
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The zone between the high tide and low tide
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The zone in the middle of the high tide where there is a high concentration of life
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The part of the beach where the water reaches during high tide, but not low tide
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The final frontier
Pregunta 19
Pregunta
Check all that apply to organisms in the intertidal zone
Respuesta
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Sessile organisms are emerged and submerged
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Migrate with the tide
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Triggers spawning
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Triggers mating
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