Exam (elaborations)
CIE IGCSE COMPUTER SCIENCE: SENSORS EXAM QUESTIONS WITH COMPLETE ANSWERS
- Course
- Institution
CIE IGCSE COMPUTER SCIENCE: SENSORS EXAM QUESTIONS WITH COMPLETE ANSWERS
[Show more]
Content preview
CIE IGCSE COMPUTER SCIENCE:SENSORS EXAM QUESTIONS WITH
COMPLETE ANSWERS
What are the different types of sensors? - Answer
● Light
● Temperature
● Magnetic Field
● Gas
● Pressure
● Moisture
● Humidity
● pH
● Motion
What does a light sensor do? - Answer-● Detects light
● Detect Ambient Light Level (brightness at
current time)
● Similar to our eyes
What are light sensors used for? - Answer-● Street lights : only come on when they
need to
● Security systems: beams of light
● Garage doors
● Mobile phone brightness adjusts to ambient light
● Barcode readers
● Robots to navigate by using light beams
What is a temperature sensor? - Answer-● Measures heat
● Detects changes in heat and therefore
temperature
● Two types of temperature sensors:
contact (need physical contact to measure temp)
non-contact (measures energy radiated off an object)
What are temperature sensors used for? - Answer-● Fridges
● Ovens
● Heating thermostat
What is an infra-red sensor? - Answer-● Infrared used on TV remote controls
● Sensor on the TV detects the waves from the remote
● Infrared Cameras detect heat waves from
people or objects
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller biggdreamer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now