Tides/Meteorological

Question 1

Definition: Sea

Answer 1

sea consists of waves generated by a wind which is blowing

Question 2

Definition: Tides

Answer 2

periodic vertical reversing movements of water on the earth’s surface caused by the tide raising forces of the sun and moon

Question 3

Definition: Tidal Stream

Answer 3

periodic horizontal reversing movements of water accompanying the vertical rising and falling of tides

Question 4

5 factors affecting tides (GRAMS)

Answer 4

Geographic
Resonance
Astronomical
Meteorological
Seismic

Question 5

Spring tide is

a) higher highs and lower lows, or
b) lower highs and higher lows

Answer 5

A

Question 6

Neap tide is

a) higher highs and lower lows, or
b) lower highs and higher lows

Answer 6

B

Question 7

Relationship between Moon and earth - when moon is close?

Answer 7

Perigee

Question 8

Relationship between Moon and earth - when moon is further away?

Answer 8

Apogee

Question 9

Relationship between Sun and earth - when Sun is close?

Answer 9

Perihelion

Question 10

Relationship between Sun and earth - when Sun is close?

Answer 10

Aphelion

Question 11

Suns tidal force is what percentage of the moons on tides?

Answer 11

45

Question 12

What is a semi-diurnal tide?

Answer 12

2 HW and 2 LW in 25hrs

Question 13

What is a diurnal tide?

Answer 13

1 HW and 1 LW in 25 hrs

Question 14

What is a semi-diurnal with diurnal inequalities tide?

Answer 14

2 HW and 2LW in 25 hours with uneven times and heights

Question 15

What is Chart Datum?

Answer 15

The reference point from which measurements are made

Question 16

Definition: fetch

Answer 16

is the straight distance a wave has travelled over the sea or ocean

Question 17

Definition: swell

Answer 17

consists of waves that continue through their own momentum after the wind has stopped generating them