Coastal Geography Quiz for Grade 8 (MYA1)

Explain what causes waves and tides.

• The gravitational pull of the sun and the moon

• The rotation of the Earth

• The wind blowing over the sea surface

• The temperature of the ocean water

Describe longshore drift.

• The movement of sand and pebbles along the coast by wave action

• The erosion of cliffs by wave action

• The deposition of sediments in river deltas

• The formation of sand dunes by wind

Identify the process of coastal erosion where rocks are thrown against cliffs by waves.

• Attrition

• Solution

• Abrasion

• Hydraulic action

Name the coastal management technique that involves placing large boulders along the coast to absorb wave energy.

• Seawalls

• Rock armour

• Groynes

• Revetments

Give at least six uses of coasts.

• Ports, agriculture, mining, tourism, fishing, and housing

• Ports, source of primary resources, recreation, resorts, fishing, and transportation

• Ports, forestry, manufacturing, tourism, fishing, and housing

• Ports, source of primary resources, agriculture, mining, fishing, and transportation

Complete the equation for longshore drift: Longshore drift = longshore current + _______.

• Swash

• Backwash

• Beach drift

• Tidal flow

Explain how GIS supports fieldwork.
(choose the best answer)

• By providing real-time weather updates

• By offering detailed maps and spatial data analysis

• By predicting future coastal erosion

• By measuring wave heights

Which data presentation method is best for showing proportions of different categories?

• Line graph

• Bar graph

• Pie chart

• Scatter plot

Identify the process of coastal erosion where air is trapped and compressed in cracks in the rock.

• Attrition

• Solution

• Abrasion

• Hydraulic action

Suggest a method for protecting a beach from erosion.

• Building a dam

• Planting trees

• Beach nourishment

• Constructing a bridge