Answer:
3.
A) An active volcano is one that has erupted since the last ice age (i.e., in the past 10,000 years).
B) A dormant volcano would then be one that hasn’t erupted in the past 10,000 years, but which is expected to erupt again.
C) An extinct volcano would be one that nobody expects to ever erupt again.
4.Volcanoes erupt when molten rock called magma rises to the surface. Magma is formed when the earth's mantle melts.
Melting may happen where tectonic plates are pulling apart or where one plate is pushed down under another.
5.
(i) Volcanoes can change the weather. They can cause rain, thunder and lightning. Volcanoes can also have long-term effects on the climate, making the world cooler.
(ii) Fast-moving lava can kill people and falling ash can make it hard for them to breathe. They can also die from famine, fires and earthquakes which can be related to volcanoes. People can lose their possessions as volcanoes can destroy houses, roads and fields.
(iii) Lava can kill plants and animals too.
