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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 3 of 12 covers seven completed UTC days.

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Daily round

  1. Which physics term matches this definition: “the rate at which electric charge flows”?

    Answer: Electric current

    Electric current is the term for the rate at which electric charge flows.

  2. Which biology term matches this definition: “a specialized cell that transmits information through electrical and chemical signals”?

    Answer: Neuron

    Neuron is the term for a specialized cell that transmits information through electrical and chemical signals.

  3. 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.

  4. Which physics term matches this definition: “the rate at which velocity changes over time”?

    Answer: Acceleration

    Acceleration is the term for the rate at which velocity changes over time.

  5. Which earth and space science term matches this definition: “rock formed when molten material cools and solidifies”?

    Answer: Igneous rock

    Igneous rock is the term for rock formed when molten material cools and solidifies.

Daily round

  1. Which chemistry term matches this definition: “the SI unit for amount of substance, containing a fixed number of entities”?

    Answer: Mole

    Mole is the term for the SI unit for amount of substance, containing a fixed number of entities.

  2. 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.

  3. 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.

  4. Which earth and space science term matches this definition: “the short-term state of the atmosphere at a particular place and time”?

    Answer: Weather

    Weather is the term for the short-term state of the atmosphere at a particular place and time.

  5. Which chemistry term matches this definition: “a substance that donates protons or increases hydrogen-ion concentration in water”?

    Answer: Acid

    Acid is the term for a substance that donates protons or increases hydrogen-ion concentration in water.

Daily round

  1. Which earth and space science term matches this definition: “the distance light travels through a vacuum in one year”?

    Answer: Light-year

    Light-year is the term for the distance light travels through a vacuum in one year.

  2. Which biology term matches this definition: “the cellular structure that assembles proteins”?

    Answer: Ribosome

    Ribosome is the term for the cellular structure that assembles proteins.

  3. Which earth and space science term matches this definition: “water that falls from the atmosphere as rain, snow, sleet, or hail”?

    Answer: Precipitation

    Precipitation is the term for water that falls from the atmosphere as rain, snow, sleet, or hail.

  4. Which biology term matches this definition: “the basic structural and functional unit of living organisms”?

    Answer: Cell

    Cell is the term for the basic structural and functional unit of living organisms.

  5. Which earth and space science term matches this definition: “the spinning of an object around its axis”?

    Answer: Rotation

    Rotation is the term for the spinning of an object around its axis.

Daily round

  1. 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.

  2. 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.

  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 SI unit of energy and work”?

    Answer: Joule

    Joule is the term for the SI unit of energy and work.

  5. Which earth and space science term matches this definition: “the streak of light produced when a space particle heats in an atmosphere”?

    Answer: Meteor

    Meteor is the term for the streak of light produced when a space particle heats in an atmosphere.

Daily round

  1. 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.

  2. Which earth and space science term matches this definition: “rock altered by heat, pressure, or reactive fluids without completely melting”?

    Answer: Metamorphic rock

    Metamorphic rock is the term for rock altered by heat, pressure, or reactive fluids without completely melting.

  3. Which biology term matches this definition: “the process by which plants and some other organisms convert light energy into chemical energy”?

    Answer: Photosynthesis

    Photosynthesis is the term for the process by which plants and some other organisms convert light energy into chemical energy.

  4. Which earth and space science term matches this definition: “molten rock that has reached Earth’s surface”?

    Answer: Lava

    Lava is the term for molten rock that has reached Earth’s surface.

  5. 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.

Daily round

  1. Which physics term matches this definition: “a force that opposes relative motion between contacting surfaces”?

    Answer: Friction

    Friction is the term for a force that opposes relative motion between contacting surfaces.

  2. Which biology term matches this definition: “the molecule that stores hereditary information in most organisms”?

    Answer: DNA

    DNA is the term for the molecule that stores hereditary information in most organisms.

  3. 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.

  4. Which physics term matches this definition: “the distance between corresponding points on successive waves”?

    Answer: Wavelength

    Wavelength is the term for the distance between corresponding points on successive waves.

  5. Which chemistry term matches this definition: “the component of a solution that dissolves another substance”?

    Answer: Solvent

    Solvent is the term for the component of a solution that dissolves another substance.

Daily round

  1. Which chemistry term matches this definition: “a substance whose atoms from different elements are chemically bonded in fixed proportions”?

    Answer: Compound

    Compound is the term for a substance whose atoms from different elements are chemically bonded in fixed proportions.

  2. Which chemistry term matches this definition: “a reaction that absorbs energy from its surroundings”?

    Answer: Endothermic reaction

    Endothermic reaction is the term for a reaction that absorbs energy from its surroundings.

  3. Which earth and space science term matches this definition: “molten or partly molten rock beneath Earth’s surface”?

    Answer: Magma

    Magma is the term for molten or partly molten rock beneath Earth’s surface.

  4. Which biology term matches this definition: “an organism that obtains energy by eating other organisms”?

    Answer: Consumer

    Consumer is the term for an organism that obtains energy by eating other organisms.

  5. Which chemistry term matches this definition: “a physical combination of substances that are not chemically bonded”?

    Answer: Mixture

    Mixture is the term for a physical combination of substances that are not chemically bonded.