Physics P2

Descripción

OCR Gateway science, Physics, GCSE - revision resource for P2
Alice 8956
Test por Alice 8956, actualizado hace más de 1 año
Alice 8956
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Resumen del Recurso

Pregunta 1

Pregunta
What are the advantages of photocells?
Respuesta
  • Robust
  • do not need maintenance
  • no fuel needed
  • no long power cables needed
  • no pollution
  • do not contribute to global warming
  • use a renewable energy resource
  • They do not work when dark or cloudy
  • They produce no CO2 emissions in their total product lifetime

Pregunta 2

Pregunta
Photocells are made of a conductive material - silicon
Respuesta
  • True
  • False

Pregunta 3

Pregunta
Glass is transparent to...
Respuesta
  • Short wavelength radiation
  • Long wavelength radiation

Pregunta 4

Pregunta
Solar reflectors are moved by the computer to ensure that they are always facing the sun
Respuesta
  • True
  • False

Pregunta 5

Pregunta
The energy produced by a wind farm depends upon...
Respuesta
  • the size of the wind turbine
  • the speed of the wind
  • the direction of the wind

Pregunta 6

Pregunta
Some people hate wind turbines because they spoil the view
Respuesta
  • True
  • False

Pregunta 7

Pregunta
The current from a dynamo can be increased by...
Respuesta
  • Using a stronger magnet
  • Increasing the number of turns on the coil
  • Rotating the magnet faster
  • Using thinner wire to decrease resistance
  • Increase the surrounding temperature
  • Slowing down the magnet
  • Moving the magnet up and down, as well as rotating it
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