Other questions in this quiz

2. What does a decrease in wavelength of an object suggest?

  • That it is moving closer to the observer
  • It is moving away from the observer
  • That the object is stationary

3. What is transferred through the National Grid?

  • Electricity
  • Gas
  • Coal
  • Oil

4. Why is a high voltage used?

  • It decreases the amount of energy wasted in cables
  • So they can transfer the electricity at a high current
  • It increases the amount of energy wasted in cables
  • The cables cannot transfer low voltage electricity


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