These particles are able to travel several feet through the air, but can be stopped with denser materials such as wood, glass or aluminum foil.
(These particles; are; able to travel several feet through the air) (These particles; to travel; several feet) (These particles; can be stopped; with denser materials such as wood, glass or aluminum foil)
These particles These particles These particles
are to travel can be stopped
able to travel several feet through the air
several feet
with denser materials such as wood, glass or aluminum foil