Tides

Question 1

What is a diurnal inequality?

Answer 1

Two high tides and two low tides of unequal sizes in the same day.

Question 2

What magnitude is the suns effect on the rides in comparison to the moon?

Answer 2

0.46

Question 3

What is a tide?

Answer 3

The periodic rise and fall of the sea.

Question 4

What is the flood tide?

Answer 4

Incoming tide

Question 5

What is the ebb tide?

Answer 5

Outgoing tide

Question 6

What is tidal range?

Answer 6

The height difference between a successive high and low tide (in m).

Question 7

What are conjuctions?

Answer 7

When the sun and moon are aligned.

Question 8

What form of tides are spring tides?

Answer 8

Conjunction

Question 9

What are spring tides?

Answer 9

Spring tides are when the sun and moon are aligned (either both on same side of earth or opposite each other)

Question 10

Why are spring tides larger than neap tides?

Answer 10

Because the gravitational force of the sun and moon is combined where as neap tides (1/4; 3/4) are when the sun and moon are out of alignment so the Fg of each is opposing each other.

Question 11

What is a quadrature?

Answer 11

A 1/4, 3/4 new moon when the sun and moon are not aligned and so the Fg of the sun and moon work against each other reducing bulge size and therefore tide size.

Question 12

There are 2 spring tides per month, why is one larger than the other?

Answer 12

Perigee is larger then apogee as this is when sun and moon are on the same side of the earth. Apogee is when sun and moon are on opposite sides of the earth.

Question 13

What is a perigee tide?

Answer 13

The monthly spring tide where the sun and moon are on the same side of the earth.

Question 14

What is an Apogee tide?

Answer 14

The monthly spring tide when the sun and moon face each other linearly but on opposite sides of the planet

Question 15

What is a Perihelion tide?

Answer 15

When the earth is closest to the sun annually. (Jan. 2) is a fixed cycle

Question 16

What is a Aphelion tide?

Answer 16

When the earth is farthest from the sun annually (july. 2.) it is a fixed cycle

Question 17

What causes tides?

Answer 17

Tides are caused by the gravitational pill of the sun and moon acting on the ocean forming bulges. The moons gravitational pull has the greatest effect and so the primary bulge is always facing towards the moon and the secondary bulge is directly on the opposite side of the planet.

Question 18

What affects gravitational pull

Answer 18

Fg is proportional to distance (d) and mass (m )