# 3ជ្រើសរើសWhy does ice float on water?Ice is heavier than waterIce is denser than waterIce is less dense than water
# 11ជ្រើសរើសWhat was the main challenge Joe and Simon faced while descending the mountain?AvalancheSnow stormWild animals
# 12ជ្រើសរើសWhat unfortunate event happened to Joe while descending the ice cliffs?He got lostHe broke his legHe ran out of supplies