costal systems and processes

Question 1

what is the tidal range

Answer 1

difference in height between low tide and high tide

Question 2

what are tides

Answer 2

periodic rise and fall in the level of sea and are caused by the gravitational pull of the sun and the moon
the moon has the greatest influence because it is nearer

Question 3

what is a Luna month

Answer 3

29 and a half days - corresponds with the time it takes the moon to orbit the earth.

Question 4

what are tides like on a temporal scale

Answer 4

not all high tides and low tides and range at the same location are the same they will all differ over the luna month

Question 5

what are tides like on a spatial scale

Answer 5

Different point around the coastline and heigh will vary for tides . the shape of the coastline and ocean base will mean the heights of the tides can vary

Question 6

where has the largest tidal range

Answer 6

atlantic ocean

Question 7

where has the smallest tidal range

Answer 7

Mediterranean sea

Question 8

what is the time difference between 2 high tides or 2 low tides

Answer 8

12h and 25 mins= tide cycle

Question 9

what is a spring tide

Answer 9

highest high tide and lowest low tide - tidal range will be at its greatest

Question 10

what is a neap tide

Answer 10

lowest high tide and highest low tide - tidal range will be at its lowest

Question 11

how many times a month are the different types of tides

Answer 11

2

Question 12

when does a spring tide occur

Answer 12

when the sun and moon align with the earth

Question 13

when does a neap tide occur

Answer 13

sun and moon are at a right angle to each other

Question 14

what does it mean if their is a larger tidal range

Answer 14

wide zone , longer area for potential erosion and deposistion

Question 15

what does it mean if their is a smaller tidal range

Answer 15

smaller zone so less erosion

Question 16

where is the largest tidal range in the world

Answer 16

bay of fundy - north east USA - spring tide 15m range

Question 17

what landforms can be created from a large tidal range

Answer 17

wave cut platform as cliff has retreated (erosional feature)
sand dunes (depositional feature)

Question 18

what is marine erosion

Answer 18

primary cause of erosion and is from wave action

Question 19

do all waves cause erosion

Answer 19

no

Question 20

why do some waves cause erosion

Answer 20

because they have excess energy

Question 21

how do waves loose energy

Answer 21

1. movement e.g- breaking
2. transporting sediment

Question 22

what is cavitation

Answer 22

air is in a crack/ joint and water fills the crack and pushes air into rocks the increase of air pressure then causes the rocks to finally crack
air is compressed and compact and eventually explodes