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Water changes forms through temperature change as it goes through the water cycle. It evaporates by being heated by the sun, it condenses by cooling as it reaches higher altitude. It precipitates when the cooled water becomes heavy, and the cycle starts all over again.
1. Which observation supported Wegener’s theory of continental drift?
<span>d. (The earth’s rotation could provide enough force to move the continents apart. )
</span>But this is not true. we know today that continents are present on the surface massive slabs called tectonic plates.
2. Which feature do you usually see when tectonic plates move apart?
b. <span>earthquakes
</span>
3. What happens in a convection cell?
b. Cold, dense material moves horizontally, while hot, less dense material moves vertically.
Answer:
Seismic events in the Eastern Caribbean are principally associated with a subduction zone at the junction of the Caribbean Plate and the North American Plate. The North American Plate dips from east to west beneath the Caribbean Plate along a north-south line just east of the main island arc.
Explanation:
D. high and low levels of silica in the different type of lava.
Explanation:
The volcanoes have different types of explosions. Some tend to be highly explosive, some less explosive, some don't have explosions at all, while some have combinations of different eruptions. The reason for this diversity in the eruption types is mostly the composition of the magma, or rather how high is the silica content in it.
Basically, the higher the silica level in the magma the higher the explosiveness, and the lower the silica level the lower the chances of explosiveness. This is the case because the higher amount of silica makes the magma thicker, so the gasses are trapped and they explode, while when the lower silica content makes the magma less thick, so the gasses are not trapped and explosions are lacking.
