Relier Pairs Interm 12-Unit 5: Survival Version en ligne Activity 2 par MD1 UTDA 1 When mud, rock and stones slide down a hill... 2 When there is an... 3 An eruption occurs when... 4 When an earthquake happens... 5 A Hurricane is a... the ground shakes and moves. large storm that begins over the northern Atlantic Ocean. a volcano makes an explosion of rock, gas and dust. is called a landslide. avalanche, a lot of snow slides down a mountain.