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34. Which publication is used to predict the times and heights of tides at various locations?

Coast Pliot

b. Tide Tables Tidal Ourrent Tables 35. Which publication is used to predict the speed and direction of tidal cupents af vanous locations?

Sailing Dictate

Cost Plot

b. Tide Tables

c Tidal Current Tables

d. Saling Diretore

36. What is the place at which continuous side observations are made over a number of years to obtain batid data for the locality?

Tide tables 6. Primary tide station

c. Secondary tide station d. Tide vesse

37. What phenomena are caused by meteorological factors such as wind and barometric pressure and by oceanographical factors such as different salinity of water and temperature?

Currents

b. Swells Tides

ay o

d. Waves

IN

36. Which of the following should you expect when you encounter a Tsunami in the open

ocean?

Violent seas from mixed directions

No noticeable change from the existing sea state Wind Increasing to gale force d. A major wave with extreme height and length

ER

39. What is the main cause of ocean currents? a. Wind

b. Tides

c. Density differences

d. All of the above

40, What is the difference between the level of the datum of chart and of the mean high-water spring?

Spring rise

b. Diurnal rise

© Tide rise

d. Neap me

IN SETE

41. What is the movement of

water coming in towards the share or up streams? High tide

a. Ebbing

b. Flooding

d. Slacking

42 What is the level of the sea defined by some phase of tide from which water depths and heights of tide are

reckoned? Tidal datum

b. Tidal current

c. Tidal wave

d. Tidol day

13. What is the name of the phenomenon a. Gravitational pull of the Moon and the Sun

that causes ddes on Earth?

C Magnetic attraction of the Earth's poles d. Both A and B

6. Centrifugal force of the Earth's rotation

44. What is the difference between spring tides and neap tices?

a Spring tides when the Moon is full or new, and neap tides occur when the Moon is in its first or third quarter

b. Spring tides occur when the Moon is in its first or third quarter, and neap bides occur when the Moon full or

new. c. Spring tides occur when the Moon is closer to the Earth, and neap tides occur when the Moon is farther from the Earth

d. Spring tides occur when the Moon is farther from the Earth, and neap bides occur when the Moon is clothe

Earth.

MAP

NO

45. What is the rule of twelfthsin relation to tides?

3. A rule that states that the tidal range is divided into twelve equal parts over six hours. b. A rule that states that the tidal How rate increases and decreases smoothly according to a 1:23:21 sequence

over *** hours

c. A rule that states that the tidal height varies by one-twelfth of the range every hour. d. A rule that states that the tidal force is proportional to the inverse cube of the distance from the tide-generating

body.

46 What is me tidal force? a. The difference between the gravitational force at the center of Earth and that at any other location

b. The net force on Earth is caused by the gravitational attraction of both this Moon and the Sun

 

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34. The publication used to predict the times and heights of tides at various locations is Tide Tables.

35. The publication used to predict the speed and direction of tidal currents at various locations is Tidal Current Tables.

36. The place at which continuous tide observations are made over a number of years to obtain tidal data for the locality is a Primary Tide Station.

37. The phenomena caused by meteorological factors and oceanographical factors are Waves.

38. When encountering a Tsunami in the open ocean, you should expect a major wave with extreme height and length.

39. The main cause of ocean currents is a combination of wind, tides, and density differences.

40. The difference between the level of the datum of the chart and the mean high-water spring is called Spring Rise.

41. The movement of water coming in towards the shore or up streams is called Flooding.

42. The level of the sea defined by some phase of tide from which water depths and heights of tide are reckoned is called Tidal Datum.

43. The phenomenon that causes tides on Earth is the gravitational pull of the Moon and the Sun.

44. Spring tides occur when the Moon is full or new, and neap tides occur when the Moon is in its first or third quarter.

45. The rule of twelfths states that the tidal height varies by one-twelfth of the range every hour.

46. The tidal force is the net force on Earth caused by the gravitational attraction of both the Moon and the Sun.