Question

Microwaves and infrared waves are similar because they both have

Answer 1

Because they're electromagnetic waves?

Answer 2

They both have higher frequencies and high energy.
"Microwaves are used in both radar and the household microwave oven. These waves have a slightly HIGHER FREQUENCY than radio waves, ranging from 3 x 10E9 to 3 x 10E12 Hertz. They have slightly MORE ENERGY, and wavelengths that range from the size of a cell to a baseball."

Read more: http://www.ehow.com/info_8388915_different-wave-frequencies.html#ixzz2bn5pSDYT

Answer 3

microwaves and infrared aren't high frequency electromagnetic radiation.