Fill in the blanks:1. magma cools and consolidates without growth of mineral grains 2. mineral grains are of roughly equal size and coarse enough to be seen without a microscope or magnifying glass 3. rock has two or more, distinctly different-sized populations of mineral grains 4. a magnifying glass or microscope is needed to see individual mineral grains

1. Glassy ;2. Phaneritic; 3.Porphyritic; 4. Aphanitic.

Explanation: Glassy magma cools and consolidates without growth of mineral grains.

Phaneritic mineral grains are of roughly equal size and coarse enough to be seen without a microscope or magnifying glass.

Porphyritic rock has two or more, distinctly different-sized populations of mineral grains.

Aphanitic, a magnifying glass or microscope is needed to see individual mineral grains.

the correct answers are:

a - pacific plate;

it is the biggest oceanic tectonic plate. surrounded on all sides by continental tectonic plates, it is submerging and gradually becoming smaller and smaller.

b - north american plate;

huge continental plate, occupying big portion of the northern hemisphere.

c -eurasian plate;

alongside the north american plate, it is one of the two dominant continental plates in the northern hemisphere.

d - indian plate;

a small continental plate, that has been part of gondwanaland initially, but after the break up of it, moved towards northeast and pushed into the eurasian plate that was once part of laurasia.