What situation involves the most energetic light? Picking up a radio signal Taki
ID: 1291796 • Letter: W
Question
What situation involves the most energetic light?
Picking up a radio signal
Taking X-rays of a broken bone
Watching TV
Using night vision goggles
Microwaving a pizza
QUESTION 2
What is the same for any kind of light wave?
Speed
Wavelength
Frequency
Energy
Amplitude
QUESTION 3
Why is a rose red?
It only absorbs red light
It only transmits red light
It only reflects red light
It reflects all light except red
It transmits all light except red
QUESTION 4
Why do power plants transmit electricity at a very high voltage?
To make the current travel a long distance
To make sure no one touches the wires
To produce very high current values
To generate large magnetic fields
To reduce energy loss from the wires
QUESTION 5
What kind of material is likely to receive the most heat from light?
A reflective material
A transparent material
An absorbing material
Either A or B
It depends on whether the material is a conductor or an insulator
QUESTION 6
Currents in a circuit can be generated using changing magnetic fields.
True
False
QUESTION 7
Light waves move at a fixed speed through empty space.
True
False
QUESTION 8
Light waves move through a medium just like any wave.
True
False
QUESTION 9
Light waves, like all waves, are caused by something vibrating.
True
False
A.Picking up a radio signal
B.Taking X-rays of a broken bone
C.Watching TV
D.Using night vision goggles
E.Microwaving a pizza
Explanation / Answer
1. D. Using night vision goggles
2. A spped
3. C. It only reflects red light
4. E. To reduce energy loss from the wires
5. C. An absorbing material
6. true
7. ture
8. False