CT TERM4 S2 (radiation) Flashcards
(16 cards)
What is the primary difference between dull and shiny surfaces in terms of radiation?
Shiny surfaces reflect more radiation, while dull surfaces absorb more radiation.
True or False: Dark colors absorb more radiation than light colors.
True
Fill in the blank: A rough surface tends to _____ radiation more than a smooth surface.
scatter
Which type of surface, dull or shiny, is likely to have a higher reflectivity?
Shiny surface
What effect does a light color have on radiation absorption compared to a dark color?
Light colors absorb less radiation than dark colors.
Multiple Choice: Which surface would likely be better at reflecting radiation? A) Dull B) Shiny C) Rough D) Dark
B) Shiny
True or False: Smooth surfaces are more effective at absorbing radiation than rough surfaces.
False
What is the relationship between surface texture and radiation absorption?
Rough surfaces tend to absorb more radiation than smooth surfaces.
Fill in the blank: Dull surfaces can be described as having _____ reflectivity.
low
Short Answer: How do dark colors affect the temperature of an object when exposed to radiation?
Dark colors increase the temperature as they absorb more radiation.
Multiple Choice: Which of the following absorbs the most radiation? A) Smooth, Light Color B) Rough, Dark Color C) Shiny, Light Color D) Dull, Light Color
B) Rough, Dark Color
What happens to radiation when it strikes a shiny surface?
It is mostly reflected.
True or False: Light colors are always associated with low absorption of radiation.
True
Fill in the blank: A shiny surface has _____ emissivity.
low
Short Answer: Name one application where understanding surface properties in relation to radiation is critical.
Solar panel efficiency optimization.
Which emits radiation better? Matt, rough, dark surfaces or shiny, smooth, light surfaces?
Matt, rough, dark surfaces.
