Science Quiz For Grade 12

  • Question of

    What is the functional unit of kidney?

    • Hepatitis
    • Vein
    • Neuron
    • Nephron
  • Question of

    What is the force per unit area?

    • Force
    • Impulse
    • Density
    • Pressure
  • Question of

    What part of brain controls sneezing?

    • Cerebrum
    • Cerebellum
    • Hypothalamus
    • Brain Stem
  • Question of

    Which of these gases is used in welding?

    • Propyne
    • Butane
    • Methane
    • Oxy-acetylene
  • Question of

    Which of these organs aid in urine production?

    • Heart
    • Brain
    • Kidney
    • Lung
  • Question of

    Property of membranes that allows some substances to pass across, while others cannot is called as

    • Selectively Permeable
    • Vacuole
    • Trait
    • Stimulus
  • Question of

    The study of how people use tools to perform work and how people physically relate to their working environment is called:

    • Engineering
    • Ergonomics
    • Agronomy
    • Physiology
  • Question of

    It refers to a shaking of the ground caused by a sudden release of energy in the earth’s crust.

    • Tsunami
    • Earthquake
  • Question of

    Oil, natural gas and coal are examples of …

    • Biofuels
    • Fossil fuels
    • Renewable resources
    • 2.4rad/s2
    • Geothermal resources
  • Question of

    Which of the following changes to the design of this study would most improve the ability to test if the new medication effectively treats ear infections?

    • Create a second group of participants with ear infections who do not use any ear drops
    • Have participants use ear drops for only one week
    • Have participants put ear drops in both their infected ear and healthy ear
    • Create a second group of participants with ear infections who use 15 drops a day
  • Question of

    Which of the following is an example of genetic engineering?

    • Finding the sequences of bases in plant DNA
    • Attaching the root of one type of plant to the stem of another type of plant
    • Inserting a gene into plants that makes them resistant to insects
    • Growing a whole plant from a single cell
  • Question of

    What is the main cause of seasons on the Earth?

    • The speed that the Earth rotates around the sun
    • Changes in the amount of energy coming from the sun
    • The distance between the Earth and the sun
    • The tilt of the Earth’s axis in relation to the sun
  • Question of

    These graphs show the monthly precipitation and average temperature for three cities in the United States over the course of one year. Based on the graphs, which city has the greatest annual range of temperatures?

    • Chicago, Illinois
    • New York, New York
    • Los Angeles, California
    • They all have the same annual temperature range
  • Question of

    This explanation is a scientific …

    • Conclusion
    • Conclusion
    • Observation
    • Hypothesis
  • Question of

    Many diseases have an incubation period. Which of the following best describes what an incubation period is?

    • The recovery period after being sick
    • The period during which someone builds up immunity to a disease
    • The period during which someone has an infection, but is not showing symptoms
    • The effect of a disease on babies
  • Question of

    When large areas of forest are removed so land can be converted for other uses, such as farming, which of the following occurs?

    • Decreased carbon dioxide
    • Greater oxygen production
    • Colder temperature
    • Increased erosion
  • Question of

    An antacid relieves an overly acidic stomach because the main components of antacids are …

    • Neutral
    • Bases
    • Acids
    • Isotopes
  • Question of

    Which of these is a major concern about the overuse of antibiotics?

    • It can lead to antibiotic-resistant bacteria
    • There will be an antibiotic shortage
    • Antibiotics can cause secondary infections
    • Antibiotics will get into the water system
  • Question of

    A car travels at a constant speed of 40 miles per hour. How far does the car travel in 45 minutes?

    • Yes
    • No
    • 35 miles
    • 40 miles
  • Question of

    Parallel currents repel, and anti-parallel currents attract.

    • True
    • False
  • Question of

    CRTused in television and computer monitors which work on the principle of vacuum tubes are being replaced by LCDmonitors with supporting Liquid stateelectronics.

    • True
    • False
  • Question of

    Insulators have ————

    • Low conductivity
    • Both B & C
    • Low resistivity
    • High conductance
  • Question of

    The difference is often called the ________ of the circuit

    • Boundwidth
    • Brandwidth
    • Bindwidth
    • Bandwidth
  • Question of

    Which one uf the following is compound semiconductors?

    • PIn
    • S
    • Combinedly both B & C
    • Cd
  • Question of

    A set of equations involving magnetic field, and their sources, the charge and current densities are known as Maxwell’s equations.

    • True
    • False
  • Question of

    “If there is some gap between the conduction band and the valence band,the material is an/a —————-“

    • Insulator
    • Semiconductors
    • Conductor
    • Non-insulator
  • Question of

    Which band is completely empty at absolute zero?

    • Conduction
    • A & B
    • A or B
    • Valence
  • Question of

    Light is an ———— wave.

    • Short distance wave
    • Radio wave
    • Invisible wave
    • Electromagnetic
  • Question of

    Maxwell showed,a changing electric field must also produce a magnetic flux.

    • True
    • False
  • Question of

    The current carried by conductors due to flow of charges is called ———– current.

    • Yes
    • No
    • Conduction
    • Conducted

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