Walt made a study chart listing uses for two types of electromagnetic waves.

Question

A 2 column by 2 row table. Column 1 is titled A and contains the following entries: Transmitting information to cell phones, Warming up food. Column 2 is titled B and contains the following entries: Detecting counterfeit money, Destroying viruses
Which headings best complete the chart?

A: Infrared Waves
B: X-rays
A: Microwaves
B: Ultraviolet Waves
A: Ultraviolet Waves
B: Gamma Rays
A: X-rays
B: Radio Waves

Answer 1

To complete the chart accurately, we need to align the uses of electromagnetic waves with the correct types.

• The first column (A), which lists "Transmitting information to cell phones" and "Warming up food," corresponds to Microwaves, as they are used for communication (like cell phone signals) and in microwave ovens to heat food.

• The second column (B), which includes "Detecting counterfeit money" and "Destroying viruses," corresponds to Ultraviolet Waves, as UV light is commonly used in detecting counterfeit money and can also be used to kill bacteria and viruses.

So the best headings to complete the chart are:

A: Microwaves
B: Ultraviolet Waves