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General Science 2

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  • What is the primary function of white blood cells in the human body?
    Defending against infections
  • What is the process by which plants and animals exchange gases?
    Respiration
  • Which gas is used by plants during photosynthesis?
    Carbon dioxide (CO2)
  • What is the process of converting a gas directly into a solid called?
    Deposition
  • What is the main function of the heart in the human body?
    Pumping blood
  • What is the name of the largest ocean on Earth?
    Pacific Ocean
  • Which gas is responsible for the greenhouse effect?
    Carbon dioxide (CO2)
  • What class of animals can live both in water and on land?
    Amphibians
  • What is the atomic number of hydrogen?
    1
  • Which force pulls objects towards the center of the Earth?
    Gravity
  • How long does it take for Earth to complete one full rotation on its axis?
    24 hours
  • What is the SI unit of temperature?
    Kelvin (K)
  • What is the temperature at which all molecular motion ceases called?
    Absolute zero
  • What element has the chemical symbol "Au"?
    Gold
  • What is the chemical formula for carbon monoxide?
    CO
  • What is the study of the human mind and behavior called?
    Psychology
  • What is the average human body temperature?
    37°C
  • What is the unit of measurement for the electric potential difference?
    Volt (V)
  • What is the process of a gas changing into a liquid called?
    Condensation
  • What pH value represents a neutral substance?
    7
  • What kind of material is the best conductor of electricity?
    Metal
  • What is the primary function of red blood cells in the human body?
    Transporting oxygen
  • Which gas is necessary for combustion to occur?
    Oxygen (O2)
  • Who developed the theory of evolution through natural selection?
    Charles Darwin
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