Quizziz #15-Smart watch

What is the primary purpose of motion amplification in video processing?

• To make videos longer

• To detect invisible movements

• To reduce video size

• To change the video color

What common color of light do most smartwatches use to measure your pulse?

• Blue

• Yellow

• Red

• Green

Tags

NGSS.MS-PS4-2

Why do smartwatches use a flashing green light instead of a constant light?

• To look more attractive

• To save battery

• To increase brightness

• To measure ambient light

Tags

NGSS.MS-PS3-4

What additional measurement can smartwatches calculate using the green light sensor?

• Blood pressure

• Skin resistance

• Breathing rate

• Temperature

How do smartwatches and pulse oximeters use red light to measure blood oxygen levels?

• By generating heat

• By reflecting light

• By measuring sound

• By detecting movement