Which example shows that electromagnetic waves can travel without moving through a specific material (medium)?
a.
light traveling through a glass window
b.
light traveling to the earth from an orbiting satellite
c.
rings made by a pebble when dropped in water
d.
sound traveling through air

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.