Exam 4

Question 1

What is a Beach?

Answer 1

Broad ribbon of sand that lies on the land along the edge of the sea.

Question 2

What is a Berm?

Answer 2

A Buffer protecting the coast from the ocean.

Question 3

What happens if all the sand at a beach is eroded?

Answer 3

The waves can attack the cliffs or land directly

Question 4

What is a Balance Beach?

Answer 4

A Beach Which loses as much sand in the winter high surf as it gains in the summer low surf

Question 5

What kind of rocks do round pebbles come from?

Answer 5

Igneous

Question 6

What kind of rocks do flat pebbles come from?

Answer 6

Sedimentary

Question 7

What kind of rocks do irregular pebbles come from?

Answer 7

Metamorphic

Question 8

What is the Shore?

Answer 8

The narrow strip of land in contact with the sea

Question 9

What is a Backshore?

Answer 9

The strip of land extending from the cliff to a break in the slope

Question 10

What is a Foreshore?

Answer 10

The area of the beach that slopes away from the land toward the sea.

Question 11

What is a Berm?

Answer 11

The flat area inland from the water covered by sand or gravel

Question 12

What is the cause of standing waves?

Answer 12

Reflection off the breakwater

Question 13

What is a Beach Scarp?

Answer 13

Cliff space cut by waves

Question 14

What is a Diurnal?

Answer 14

A single high-tide and low-tide in a 24hr span (Gulf of Mexico)

Question 15

What is a Semi-Diurnal?

Answer 15

Two high-tides and low-tides in a 24hr span, tide height is the same (East Coast)

Question 16

What are Mixed Tides

Answer 16

Two high-tides and low-tides in a 24hr span, tide height is different (West Coast)

Question 17

What is a Tidal Range?

Answer 17

The difference between the height of the high and low tides

Question 18

What is a Mean High Tide?

Answer 18

Average high tide level over a year

Question 19

What is a Mean Low Tide?

Answer 19

Average low tide level over a year

Question 20

When do Spring Tides occur?

Answer 20

A few days after a New and Full Moons

Question 21

When do Neap Tides occur

Answer 21

After third and fourth quarters of the moon

Question 22

What is an Ebb Current?

Answer 22

An outgoing tidal flow

Question 23

What is a Black Current?

Answer 23

Minimum current flow that occurs between tides during tidal change.

Question 24

What is the cause of tides?

Answer 24

Magnetic Pull of the Moon

Question 25

What is a Grunion?

Answer 25

A fish which runs ashore to lay eggs on the sand during Spring Tides. Grunions are caught by hands only.