Agroup of students are wandering around a room. when their teacher claps, the students sit down wherever they are.

this situation best models the formation of which type of solid?

an amorphous solid because the particles do not have a regular structure
an amorphous solid because the motion of the particles stopped
a crystalline solid because the moving particles lock into fixed positions
a crystalline solid because the particles have a long-range order

Amorphous solids.

Explanation:

The students sit down wherever they are means that the movement of students has been stopped thus they will be behaving like particles in a solid.

Now as the students were irregularly arranged thus the solid will be amorphous.

there are two types of solids:

Crystalline solids: they have regular arrangement of particles in them.

Amorphous solid : they have random arrangement of particles in them.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)