Question |
Answer |
what is the periodic rise and fall of the eaarths oceans surface caused by the gravitational force between earth and the moon and between earth and the sun |
tides |
occurs when earth, the moon and the sun form a right angle and has the lowest tidal range |
neap tide |
surface wave currents are formed by what |
wind |
the average level of the ocean's surface at any given time |
sealevel |
a spring tide is a tide that has the largest what |
tidal range |
a neap tide is a tide that has the lowest what |
tidal range |
the bottom of the wave |
trough |
the highest part of the wave |
crest |
from crest to crest or from trough to trough |
wavelength |
to trough to crest |
wave height |
how shallow does water need to be for a breaker to form |
the water has to be more shallow than the base is |
what is a tsunami |
a huge wave caused by a disturbance in the ocean |
which disturbance can cause a tsunami |
earthquakes |
what causes tides |
gravitational pull on the earth, moon, and sun
|
why does the largest tidal range occur during a spring tide |
more gravity pull |
why does a neap tide have the lowest tidal range |
low gravity pull |
what is the position of the earth, sun, and moon at a spring tide |
strait line |
what is the position of the earth, sun, and moon at a neap tide |
right angle |
the what distance between the crest and the trough of a wave is the wave height |
vertical |
the what distane between the crest to crest is the wavelength |
horizontal |
when a wave reaches a certain height and cant support the crest it collapses, what is this called |
breaker |
besides an earthquake what else is a disturbance that can cause a tsunami |
landslides, volcanic eruptions, and glaciers |
can a breaker form at any size |
no |
how many neap tides are there in a single day |
2 |
how many spring tides are there in a single day |
1 |
when do the neap tides occur |
morning, and late afternoon |
when do the spring tides occur |
all afternoon |