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Cambridge 14 Test 1 Section 4_Vocabulary

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  • Bird __________ happens every year when they fly to warmer countries.
    migration
  • Machines need regular __________ to keep working well.
    maintenance
  • We can __________ energy from the sun and the wind.
    derive
  • The __________ rises and falls every day, and can be used to produce electricity.
    tide
  • Engineers are learning how to __________ the power of the ocean.
    harness
  • The city stores drinking water in a large __________.
    reservoir
  • A __________ is built across a river to hold back water.
    dam (breakwater)
  • The weather in this area is very __________ and changes quickly.
    erratic
  • The river carries a lot of __________, like sand and soil.
    sediment
  • A __________ can generate electricity by storing seawater and controlling its flow.
    tidal lagoon
  • Solar and wind power are __________ sources of energy.
    renewable
  • The flood left fine __________ on the farmland.
    silt
  • Coal, oil, and gas are __________ and will eventually run out.
    nonrenewable
  • Water travels through a long __________ to reach people’s homes.
    pipe
  • The __________ of sunlight into electricity is done by solar panels.
    conversion
  • A wind __________ turns to produce electricity.
    turbine
  • Scientists try to __________ climate change by reducing pollution.
    reverse
  • Many countries build __________ wind farms to use strong sea winds.
    offshore
  • Wave energy is __________ because waves never completely stop.
    constant
  • Burning fossil fuels produces a lot of __________, which cause global warming.
    greenhouse gas emissions
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