Beyond B1+ U3

a fire that is burning strongly and out of control on an area of grass or bushes in the countryside

a gradual increase in world temperatures

a sudden violent movement of the earth's surface, sometimes causing great damage

a large amount of ice, snow, and rock falling quickly down the side of a mountain

a mass of rock and earth moving suddenly and quickly down a steep slope

become covered with water, especially in a way that causes problems

an explosion that occurs as a result of the rapid release of energy

the state of being without a home

a long period when there is little or no rain

a strong, dangerous wind that forms itself into an upside-down spinning cone

an extremely large wave caused by a violent movement of the earth under the sea

an occasion when a volcano explodes, and flames and rocks come out of it