when snow moves fast down the mountain
avalanche
when water covers the land
flood
when lava shoots out of the volcano
volcanic eruption
strong wind combined with rain
hurricane
a huge wave
tsunami
when snow falls (super difficult...)
snowfall
when the ground shakes
earthquake
long-lasting high temperatures
heatvawe
a bright flash in the sky
lightning
when lightning strikes many times (usually with rain and wind)
thunderstorm