Question

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

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**