What carries energy in sunlight?

Compare the two fields shown in the diagram. How are they oriented?

Which pair of waves can both travel through a vacuum?

Two electromagnetic waves of different kinds travel through a vacuum. How do their speeds compare?

In a vacuum, which motion of an electrically charged particle can produce radiation?

How far apart are neighboring crests in the graph?

What is the maximum displacement from the middle line in the graph?

Which quantity counts complete cycles passing a point each second?

Which part of the spectrum is commonly used to image a broken bone inside the body?

In a vacuum, a wave's cycles per second double. What happens to its crest-to-crest spacing?

Compared with a photon from a wave with fewer cycles per second, a photon from a wave with more cycles per second has ___.

Which type of radiation occupies region D in the diagram?

Which sequence arranges the seven bands from longest to shortest wavelength?

Which two bands lie immediately on either side of the part of the spectrum detected by human eyes?

At which end of the usual seven-region spectrum are photons most energetic?

Using the expanded strip, which color has the shortest wavelength?

A station broadcasts an AM program across a province. Which part of the spectrum carries it?

Liza makes a cellphone call in Quezon City. Which band carries the signal between her phone and a nearby tower?

A conventional TV remote sends an invisible signal toward a receiver on the TV. Which band is typically used?

During a trip to Boracay, Carlo applies sunscreen to reduce sunburn. Which part of the spectrum is it meant to block or absorb?