Question

light, radio waves, and x - rays are all types of ________, which are waves that do not need a medium to travel.
the entire range of light waves, radio waves, x - rays, and more are found on the ________ spectrum
a ________ is a type of mechanical wave that travels through air or another medium and can be heard by our ears.
a ________ is a type of electromagnetic wave that we can see with our eyes, such as the colors of a rainbow.
when waves pass through a material without being absorbed, this is called wave ________.
a frosted glass window is ________ because it lets some light through but not detailed shapes.
a wooden door is ________ because it does not let any light through.
clear glass is ________ because it allows light to pass through so you can see objects clearly on the other side

Explanation:

1. Light, radio waves, and X - rays are all types of electromagnetic waves which are waves that do not need a medium to travel.
2. The entire range of light waves, radio waves, X - rays, and more are found on the electromagnetic spectrum.
3. A sound wave is a type of mechanical wave that travels through air or another medium and can be heard by our ears.
4. A visible light wave is a type of electromagnetic wave that we can see with our eyes, such as the colors of a rainbow.
5. When waves pass through a material without being absorbed, this is called wave transmission.
6. A frosted glass window is translucent because it lets some light through but not detailed shapes.
7. A wooden door is opaque because it does not let any light through.
8. Clear glass is transparent because it allows light to pass through so you can see objects clearly on the other side.

Answer:

1. electromagnetic waves
2. electromagnetic
3. sound wave
4. visible light wave
5. transmission
6. translucent
7. opaque
8. transparent