Microwave radiation (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
How do microwave wavelengths compare to infrared radiation?
How do microwave wavelengths compare to infrared radiation?
Microwaves have longer wavelengths
How do microwave wavelengths compare to radio waves?
How do microwave wavelengths compare to radio waves?
Microwaves have shorter wavelengths
Which two technologies commonly use microwave radiation?
Which two technologies commonly use microwave radiation?
Cooking and satellite communication
What is CMB radiation?
What is CMB radiation?
Low-frequency EM radiation from universe
What theory does CMB radiation provide evidence for?
What theory does CMB radiation provide evidence for?
The Big Bang theory
What is CMB radiation believed to be?
What is CMB radiation believed to be?
Leftover energy from the Big Bang
Approximately how long ago did the Big Bang occur?
Approximately how long ago did the Big Bang occur?
13.8 billion years ago
At what age of the universe does CMB radiation provide a snapshot?
At what age of the universe does CMB radiation provide a snapshot?
380,000 years old
What has the universe been doing since the Big Bang?
What has the universe been doing since the Big Bang?
Expanding and cooling
How do microwave ovens heat food?
How do microwave ovens heat food?
By making water molecules vibrate
Why are microwaves suitable for satellite communications?
Why are microwaves suitable for satellite communications?
They pass through Earth's atmosphere