IoT
What does IoT stand for?
Internet of Things
What does "5G" mean (spell out the phrase)?
5G means "fifth-generation mobile network."
In one sentence, describe what a blockchain is.
A blockchain is a digital database that securely records transactions across a network of computers.
Name one positive impact of modern technology on daily life.
Example positive: Online shopping makes buying goods more convenient.
What is "digital eye strain"? Name one symptom.
Digital eye strain is vision discomfort from prolonged screen use; symptom: headaches or blurred vision.
Name one example of an IoT device.
Example: Smartwatch (also: smart refrigerator, connected car).
Compared to older networks, is 5G usually faster or slower?
5G is usually faster than older networks.
What word do we use for the groups of transactions stored together?
The groups are called "blocks."
Give one negative effect technology can have on jobs.
Negative effect: Automation can replace some jobs, causing unemployment for certain roles.
What does "text neck" refer to? (one short sentence)
"Text neck" is neck pain from looking down at phones or devices for long periods.
What is one thing an IoT device can do with the data it collects? (one short sentence)
It can send the data to the cloud for analysis or to a phone app to show status.
Give one example of something that could work better with faster mobile internet (one short sentence).
Example: Streaming high-quality video with less buffering (also: faster downloads, better video calls).
True or false: Blockchain makes it hard to change old records.
True — blockchain makes it hard to change old records.
How can social media help people? Give one short example.
Social media can help people stay connected, for example, by letting distant family members video chat.
State the 20-20-20 rule in one sentence.
20-20-20 rule: Every 20 minutes, look at something 20 feet away for 20 seconds.
Give one simple way to keep an IoT device more secure (one action).
Change the device's default password (also: keep firmware updated).
Name one challenge of building 5G networks (one short phrase).
Challenge: Requires many small cell towers or infrastructure (deployment cost).
Name one use of blockchain besides cryptocurrencies (one short example).
Example: Tracking supply chains or recording property records.
How can technology hurt the environment? Give one short example.
Example harm: Manufacturing devices and data centers create electronic waste and use energy.
Give one tip to reduce time spent on phones each day.
Tip to reduce phone time: Set daily screen-time limits or schedule "phone-free" periods.
Name one place (home, school, or city) where IoT devices could help and say one short benefit.
Example: In a home — smart thermostats save energy by adjusting temperature automatically.
Say one way 5G could help self-driving cars in one sentence.
Example: 5G can provide low-latency communication so self-driving cars can get real-time traffic updates.
Give one simple reason a company might use a blockchain for tracking products.
Reason: To create a tamper-evident record of where items came from, improving trust.
Suggest one thing schools could do to help students who lose jobs to automation (one short idea).
School action: Offer job retraining or new classes teaching digital skills and coding.
Suggest two simple daily habits that help both posture and eye health when using devices.
Two daily habits: Take regular posture breaks (stand and stretch) and follow the 20-20-20 rule during screen use.