1. in a hot-spot volcanic island chain, such as the hawaiian islands, all islands possess active volcanoes simultaneously and therefore the risks of volcanic hazards are about the same for all islands.
a. true
b. false

True.

Explanation:

As the volcanic islands of Hawaii are still considered to be in an active zone, as the Hawaiian islands are believed to be formed on the hotspot of eruptions ie. the active plate boundaries from below the surface these tend to move westwards direction from the main island of Hawaii. As we go from east to west the chain of rocks gets older and then forms a ring-shaped pattern hence called the ring of fire. Thus there is a great risk of volcanic hazard as these are fault lines being associated with high magnitude tectonic earthquakes. They can have a seriously damaging impact upon other islands as well and this considered to be highly hazardous. As various vents and mounds of volcanic nature lie within the oceans of the Pacific plate.

So  if  the sum of the enthalpies of the reactants is greater than the products, the  reaction  will be  exothermic.  if  the products side has a larger enthalpy, the  reaction  is  endothermic. you may wonder why  endothermic reactions, which soak up energy or enthalpy from the environment, even happen

Answer cumulus clouds;