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Seven days of questions and answers

Science Trivia Answers Archive

Review earlier daily rounds, reveal the correct answer, and use the short explanation to learn the fact behind each question. Page 9 of 12 covers seven completed UTC days.

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Daily round

  1. Which physics term matches this definition: “the SI unit of pressure”?

    Answer: Pascal

    Pascal is the term for the SI unit of pressure.

  2. Which physics term matches this definition: “the number of repeating cycles per unit of time”?

    Answer: Frequency

    Frequency is the term for the number of repeating cycles per unit of time.

  3. Which earth and space science term matches this definition: “the long-term pattern of weather conditions in a region”?

    Answer: Climate

    Climate is the term for the long-term pattern of weather conditions in a region.

  4. Which physics term matches this definition: “speed measured in a specified direction”?

    Answer: Velocity

    Velocity is the term for speed measured in a specified direction.

  5. Which physics term matches this definition: “energy transferred when a force moves an object through a distance”?

    Answer: Work

    Work is the term for energy transferred when a force moves an object through a distance.

Daily round

  1. Which chemistry term matches this definition: “a reaction that releases energy to its surroundings”?

    Answer: Exothermic reaction

    Exothermic reaction is the term for a reaction that releases energy to its surroundings.

  2. Which earth and space science term matches this definition: “the breakdown of rock at or near Earth’s surface”?

    Answer: Weathering

    Weathering is the term for the breakdown of rock at or near Earth’s surface.

  3. Which biology term matches this definition: “the process cells use to release usable energy from nutrients”?

    Answer: Cellular respiration

    Cellular respiration is the term for the process cells use to release usable energy from nutrients.

  4. Which physics term matches this definition: “the return of a wave from a boundary into its original medium”?

    Answer: Reflection

    Reflection is the term for the return of a wave from a boundary into its original medium.

  5. Which physics term matches this definition: “the region in which magnetic forces act on magnets or moving charges”?

    Answer: Magnetic field

    Magnetic field is the term for the region in which magnetic forces act on magnets or moving charges.

Daily round

  1. Which biology term matches this definition: “the organelle that produces much of a eukaryotic cell’s usable energy”?

    Answer: Mitochondrion

    Mitochondrion is the term for the organelle that produces much of a eukaryotic cell’s usable energy.

  2. Which chemistry term matches this definition: “the smallest unit of an element that retains that element’s chemical properties”?

    Answer: Atom

    Atom is the term for the smallest unit of an element that retains that element’s chemical properties.

  3. Which earth and space science term matches this definition: “the thick layer of hot rock between Earth’s crust and core”?

    Answer: Mantle

    Mantle is the term for the thick layer of hot rock between Earth’s crust and core.

  4. Which biology term matches this definition: “the maintenance of relatively stable internal conditions in an organism”?

    Answer: Homeostasis

    Homeostasis is the term for the maintenance of relatively stable internal conditions in an organism.

  5. Which earth and space science term matches this definition: “an icy body that can form a glowing coma and tails near the Sun”?

    Answer: Comet

    Comet is the term for an icy body that can form a glowing coma and tails near the Sun.

Daily round

  1. Which biology term matches this definition: “the net movement of water across a selectively permeable membrane”?

    Answer: Osmosis

    Osmosis is the term for the net movement of water across a selectively permeable membrane.

  2. Which earth and space science term matches this definition: “rock formed when accumulated sediment becomes compacted and cemented”?

    Answer: Sedimentary rock

    Sedimentary rock is the term for rock formed when accumulated sediment becomes compacted and cemented.

  3. Which physics term matches this definition: “the SI unit of power”?

    Answer: Watt

    Watt is the term for the SI unit of power.

  4. Which earth and space science term matches this definition: “a relatively small rocky or metallic object orbiting the Sun”?

    Answer: Asteroid

    Asteroid is the term for a relatively small rocky or metallic object orbiting the Sun.

  5. Which earth and space science term matches this definition: “a luminous ball of plasma powered mainly by nuclear fusion”?

    Answer: Star

    Star is the term for a luminous ball of plasma powered mainly by nuclear fusion.

Daily round

  1. Which physics term matches this definition: “a measure of how strongly a material or component opposes electric current”?

    Answer: Resistance

    Resistance is the term for a measure of how strongly a material or component opposes electric current.

  2. Which biology term matches this definition: “a DNA-containing structure that carries genetic information”?

    Answer: Chromosome

    Chromosome is the term for a DNA-containing structure that carries genetic information.

  3. Which chemistry term matches this definition: “a starting substance that is changed during a chemical reaction”?

    Answer: Reactant

    Reactant is the term for a starting substance that is changed during a chemical reaction.

  4. Which chemistry term matches this definition: “a pure substance made of atoms with the same number of protons”?

    Answer: Element

    Element is the term for a pure substance made of atoms with the same number of protons.

  5. Which chemistry term matches this definition: “a homogeneous mixture in which one or more substances are dissolved”?

    Answer: Solution

    Solution is the term for a homogeneous mixture in which one or more substances are dissolved.

Daily round

  1. Which chemistry term matches this definition: “a highly reactive metal element in group 1, excluding hydrogen”?

    Answer: Alkali metal

    Alkali metal is the term for a highly reactive metal element in group 1, excluding hydrogen.

  2. Which biology term matches this definition: “the membrane-bound compartment containing most DNA in a eukaryotic cell”?

    Answer: Nucleus

    Nucleus is the term for the membrane-bound compartment containing most DNA in a eukaryotic cell.

  3. Which biology term matches this definition: “a unit of heredity encoded in DNA”?

    Answer: Gene

    Gene is the term for a unit of heredity encoded in DNA.

  4. Which chemistry term matches this definition: “two or more atoms held together by chemical bonds”?

    Answer: Molecule

    Molecule is the term for two or more atoms held together by chemical bonds.

  5. Which biology term matches this definition: “an immune protein that binds a specific target”?

    Answer: Antibody

    Antibody is the term for an immune protein that binds a specific target.

Daily round

  1. Which chemistry term matches this definition: “an atom of an element with a particular number of neutrons”?

    Answer: Isotope

    Isotope is the term for an atom of an element with a particular number of neutrons.

  2. Which physics term matches this definition: “the change in a wave’s direction caused by a change in speed between media”?

    Answer: Refraction

    Refraction is the term for the change in a wave’s direction caused by a change in speed between media.

  3. Which chemistry term matches this definition: “an atom or molecule with a net electric charge”?

    Answer: Ion

    Ion is the term for an atom or molecule with a net electric charge.

  4. Which earth and space science term matches this definition: “the continuous movement of water among Earth’s surface, atmosphere, and subsurface”?

    Answer: Water cycle

    Water cycle is the term for the continuous movement of water among Earth’s surface, atmosphere, and subsurface.

  5. Which physics term matches this definition: “stored energy associated with position or configuration”?

    Answer: Potential energy

    Potential energy is the term for stored energy associated with position or configuration.