AP Computer Science Principles: Light and Color Assessment

What is light in terms of its physical properties?

• A. A form of electromagnetic radiation carrying energy
• B. Only visible wavelengths that humans can see
• C. A type of particle that travels in straight lines
• D. A phenomenon limited to the visible spectrum

Which statement best describes the relationship between analog and digital data?

• A. Digital data is always more accurate than analog data
• B. Analog data is continuous while digital data is discrete
• C. Analog data can only be processed by computers
• D. Digital data cannot represent continuous quantities

In the context of light measurement, what does sampling discrete values mean?

• A. Taking continuous measurements without interruption
• B. Converting analog light data into specific digital measurements at intervals
• C. Measuring only visible light wavelengths
• D. Recording light data in binary format only

What is the primary difference between additive and subtractive colors?

• A. Additive colors are brighter than subtractive colors
• B. Subtractive colors are used only in digital displays
• C. Additive colors are created by light while subtractive colors are created by reflected surfaces
• D. There is no difference between the two color systems

What is the benefit of using digital data over analog data for light measurements?

• A. Digital data never loses any information
• B. Digital data can be copied and distributed efficiently while maintaining precision
• C. Digital data requires less storage space
• D. Digital data is always more accurate than analog data

What wavelength represents blue light in the sensor measurements?

• A. 525 nm
• B. 615 nm
• C. 465 nm
• D. 575 nm

How does a binary search algorithm work?

• A. It searches through data one item at a time
• B. It randomly selects items until finding a match
• C. It divides the data set in half repeatedly to find the target
• D. It only works with unsorted data

What is the advantage of binary search over linear search for large datasets?

• A. Binary search works with unsorted data
• B. Binary search requires fewer iterations to find data
• C. Binary search is easier to implement
• D. Binary search uses less computer memory

What is the potential negative impact of blue light from computer screens?

• A. It causes permanent eye damage
• B. It can interfere with sleep patterns
• C. It reduces screen resolution
• D. It increases power consumption

The visible spectrum ranges from violet to _____________.

• red
• indigo
• orange
• green