Coasts

When waves are breaking against the cliffs by their power and erosion occurs, it refers to:

• corrasion

• attrition

• solution

• hydraulic action

When the acids in seawater slowly disolve the chalk and limestone cliffs and the material is carried away it represents:

• corrasion

• attrition

• hydraulic action

• solution

Small oceans with small fetch develop:

• constructive waves

• distructive waves

Constructive waves have:

• low wave height and long wave length with low frequency, between 6 and 8 waves per minute

• large wave height and short wave length and frequency, between 13 and 15 waves per minute.

Large oceans with large fetch produce large waves, called:

• distructive waves

• constructive waves

Constructive waves are associated with:

• weak backwash and strong swash

• strong backwash and weak swash

Destructive waves tend to form:

• pebbly beaches

• sandy beaches

The image describes:

• constructive waves

• destructive wave

The image describes:

• constructive wave

• destructive wave

The wavelength is:

• The top of the wave

• The low area in between two waves.

• The distance between the crest and the trough

• The distance between two crests or two troughs