Radar allows pilots to see through clouds, rain, darkness, and fog. It can detect objects so a pilot can avoid hitting
them. Radar is also used by the police to detect the speeds of cars on the highway. Radar uses radio waves. Explain
why gamma rays are not used for radar instead of radio waves.

Gamma rays have more energy than radio waves and could harm people

Gamma rays do not have enough energy to see through the clouds.

Gamma rays are slower than radio waves so would not work for police radar speed detectors.

Gamma ray are only in outer space.

Sally, age 3 months, has a moist, red, vesicular rash on her cheeks, the backs of her hands, and her arms. her mother said sally was constantly trying to scratch the rash and often has difficulty sleeping. her father has a family history of allergic rhinitis and asthma. discussion questions. 1. review atrophic dermatitis from chapter 3 and discuss the pathophysiology of sally’s symptoms. 2. why is the father’s medical history significant, and what can sally expect as she grows up? 3. discuss the need to limit scratching, and describe practical methods to achieve this.