Photosynthesis

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Questions and Answers

Which one of these is the process in which plants use light energy from the Sun to make their own food?

  • Photosynthesis (correct)
  • Dependent variable
  • Stigma
  • Anther

Which one of these is a unit used to measure energy?

  • Elements
  • Matter
  • Joule (correct)
  • Acids

Which one of these is a pure substance that cannot be broken down anymore?

  • Elements (correct)
  • Dependent variable
  • Matter
  • Independent variable

Which one of these is the variable that you change in an experiment?

<p>Independent variable (D)</p> Signup and view all the answers

Which one of these is the variable that you measure in an experiment?

<p>Dependent variable (C)</p> Signup and view all the answers

Match the following energy systems with their correct examples:

<p>Biological system = Human body Electrical system = Windmill Mechanical System = Car engine Thermal system = Sun</p> Signup and view all the answers

Match the following energy transfer methods with their correct processes:

<p>Radiation = Transfer of energy through electromagnetic waves Conduction = Transfer of heat through direct contact Absorption = Process of taking in energy Convection = Transfer of heat through a fluid</p> Signup and view all the answers

Match the following time periods with the correct occurrences:

<p>6 hours = High tide repeats in a place 10 hours = High tide does not repeat in a place 18 hours = High tide does not repeat in a place 24 hours = High tide repeats in a place</p> Signup and view all the answers

Match the following statements about the equator with their correct options:

<p>Day is always longer than the night = Incorrect statement Night is always longer than the day = Incorrect statement Day is equal to the length of night = Correct statement Day is longer than night in summer = Incorrect statement</p> Signup and view all the answers

Match the following scientists with their correct contributions:

<p>Galileo Galilei = First used mathematics to describe the orbits of planets correctly Johannes Kepler = First used mathematics to describe the orbits of planets correctly Albert Einstein = First used mathematics to describe the orbits of planets correctly Nicolaus Copernicus = First used mathematics to describe the orbits of planets correctly</p> Signup and view all the answers

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