MC	Physics	Standard: 05
Objective: 02. Describe the nature of electromagnetic radiation and visible light.
ILO:

Which of the following is not a characteristic of a gamma ray?

a. has a low frequency

b. has a great amount of energy

c. is an electromagnetic wave

d. is usually released after alpha and beta decay

Correct Answer: a

MC	Physics	Standard: 05
Objective: 02. Describe the nature of electromagnetic radiation and visible light.
ILO:

Indicate which of the following is an example of the Doppler Effect. Circle ïyesÍ for those items which are examples and ïnoÍ for those which are not.

1.	Yes	No	Astronomers measure ïred shiftÍ to measure speed.
2.	Yes	No	You hear your echo while visiting the Grand Canyon.
3.	Yes	No	The sound of the tires on the road makes a ïbuzzÍ inside the car.
4.	Yes	No	A policeman uses a ïradarÍ device to catch speeders.
5.	Yes	No	A bat locates and catches a flying insect.
6.	Yes	No	The pitch on an alarm siren changes as the siren rotates.
7.	Yes	No	Weather stations use weather radar to track storms.
8.	Yes	No	Biologists use radio transmitters to track animals.
9.	Yes	No	When you look at a pencil in a glass of water, it appears bent.
10.	Yes	No	You can tell if a car is approaching or leaving by the sound of the tires an engine without seeing it.
11.	Yes	No	Light from a projector shows a movie on a screen.
12.	Yes	No	You hear thunder several seconds after seeing the lightning flash.
13.	Yes	No	Water droplets split sunlight into a rainbow.
14.	Yes	No	A passenger on the train hears the trainÍs whistle change in pitch.
15.	Yes	No	A doctor uses ultrasound to study a beating heart.

Correct Answers:

1.	Yes		Astronomers measure ïred shiftÍ to measure speed.
2.		No	You hear your echo while visiting the Grand Canyon.
3.		No	The sound of the tires on the road makes a ïbuzzÍ inside the car.
4.	Yes		A policeman uses a ïradarÍ device to catch speeders.
5.	Yes		A bat locates and catches a flying insect.
6.	Yes		The pitch on an alarm siren changes as the siren rotates.
7.	Yes		Weather stations use weather radar to track storms.
8.		No	Biologists use radio transmitters to track animals.
9.		No	When you look at a pencil in a glass of water, it appears bent.
10.	Yes		You can tell if a car is approaching or leaving by the sound of the tires an engine without seeing it.
11.		No	Light from a projector shows a movie on a screen.
12.		No	You hear thunder several seconds after seeing the lightning flash.
13.		No	Water droplets split sunlight into a rainbow.
14.		No	A passenger on the train hears the trainÍs whistle change in pitch.
15.	Yes		A doctor uses ultrasound to study a beating heart.

MC	Physics	Standard: 05
Objective: 02. Describe the nature of electromagnetic radiation and visible light.
ILO:

Below is a list of technological devices that have been developed over the past century or so. Select whether each uses electromagnetic (EM) radiation directly in its primary function by circling the appropriate response.

1. Satellite Television	Uses EM	Does NOT use EM.
2. Automobiles	Uses EM	Does NOT use EM.
3. Cell Phone	Uses EM	Does NOT use EM.
4. Fluorescent Light	Uses EM	Does NOT use EM.
5. Electric Motor	Uses EM	Does NOT use EM.
6. Flashlight	Uses EM	Does NOT use EM.
7. Batteries	Uses EM	Does NOT use EM.
8. CD Player	Uses EM	Does NOT use EM.
9. Medical X-ray Machine	Uses EM	Does NOT use EM.
10. Personal Computer	Uses EM	Does NOT use EM.

Correct Answers:

1. Satellite Television	Uses EM
2. Automobiles		Does NOT use EM.
3. Cell Phone	Uses EM
4. Fluorescent Light	Uses EM
5. Electric Motor		Does NOT use EM.
6. Flashlight	Uses EM
7. Batteries		Does NOT use EM.
8. CD Player	Uses EM
9. Medical X-ray Machine	Uses EM
10. Personal Computer	Uses EM

E	Physics	Standard: 05
Objective: 02. Describe the nature of electromagnetic radiation and visible light.
ILO:

Compare and classify the basic properties of these types of radiation (the movement of energy along a straight line away from an energy source):

a. Sound

b. Light

Correct Answers:

a. Sound waves are an example of a material vibration. The energy is transmitted through a material medium by pressure variations. (2 points)

b. Electromagnetic radiation, in which energy is transmitted by variations in electric and magnetic fields. Electromagnetic radiation requires no material medium and travels through a vacuum. (2 points)

E	Physics	Standard: 05
Objective: 02. Describe the nature of electromagnetic radiation and visible light.
ILO:

Differentiate between electromagnetic and mechanical waves by naming two characteristics of each.

Scoring Guide:

Answers will vary. Award a point for each correct distinguishing characteristic. Total: 4 points.