Answer: Sixty percent of all active volcanoes occur at the boundaries between tectonic plates most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean some volcanoes like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots
Answer:
Density is one of the most factors that play a key role in plate tectonic activities. Some of the ways in which density is important in the field of plate tectonics are as follows-
- The convergent plate boundaries are responsible for the creation of a subduction zone, where the high-density lithospheric plate subducts below the less dense one. It is because the heavier plate is comprised of heavy minerals thereby forming heavier rocks as a result of which its density increases. Due to these differences in density, there occurs a subduction zone.
- The divergent plate boundary forms where two plates move away from one another. This type of plate motion is responsible for the eruption of magma on the seafloor. As the plates diverge, the lithosphere becomes eventually thin, and with more progressive spreading, the magma comes out to the seafloor. This is because the hot magma is less dense, and forms convection cells as they rise upward. This is how the density helps in the upwelling of magma at the mid-oceanic ridge in a divergent plate boundary.
- When there collide two plates of equal densities, then it gives rise to the formation of huge mountains, because neither of them is heavy to get sink. So it uplifts the crust, forming a sandwich-type pattern.
Answer: Very Likely
Explanation:
Michigan has had 24 deaths from extreme cold in the last 20 years.
This is a rate of:
= 24 / 20
= 1.2 deaths per year.
For something to be considered ''very likely'' to occur, the chances of that thing occurring needs to be above 90%.
Going by the deaths per year, the probability is more than 90% at 120%. It is therefore very likely that there will be a death from extreme cold.
Answer:
B. Their location on the Baltic Sea
Explanation:
Invasions from other powers had been taking place in the Baltic Nations for a very long time due to it's location.
