Q 01/05

Geologically, a beach is a landform beside a body of water made up of what?

A) Solid bedrock

B) Compacted clay

C) Loose particles

D) Coral skeletons

Answer · why

C) Loose particles

Those particles can be sand, gravel, shingle, pebbles or shell fragments, which is why beaches range from powdery white to cobbled grey.

Q 02/05

Which crustacean digs deep burrows just above the tide line on open sandy beaches?

A) Spider crab

B) Ghost crab

C) Hermit crab

D) Fiddler crab

Answer · why

B) Ghost crab

Ghost crabs are named for their pale, sand-coloured shells and their habit of scuttling almost invisibly across the beach at night.

Q 03/05

Surfing, a sport synonymous with beaches, has its historical roots in which island group?

A) Hawaiian Islands

B) Canary Islands

C) Balearic Islands

D) Maldive Islands

Answer · why

A) Hawaiian Islands

Surfing was an important part of wider Polynesian culture, and Oahu's North Shore is still famed for some of the best winter waves in the world.

Q 04/05

Which Brazilian beach was recognised by Guinness World Records in 1994 as the longest in the world?

A) Copacabana Beach

B) Praia do Cassino

C) Baía do Sancho

D) Ipanema Beach

Answer · why

B) Praia do Cassino

It runs from the Rio Grande breakwaters to the Uruguayan border, though the coastline paradox means measurements range from 212 to 254 km and Australi...

Q 05/05

What natural phenomenon causes the regular rise and fall of ocean water levels on beaches?

A) Tsunamis

B) Tides

C) Waves

D) Currents

Answer · why

B) Tides

Tides are the periodic rise and fall of sea level, primarily caused by the gravitational forces exerted by the Moon and the Sun on Earth's oceans.