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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 7 of 12 covers seven completed UTC days.

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Daily round

  1. 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.

  2. Which chemistry term matches this definition: “the principle that total mass remains constant in a closed-system chemical reaction”?

    Answer: Conservation of mass

    Conservation of mass is the term for the principle that total mass remains constant in a closed-system chemical reaction.

  3. Which biology term matches this definition: “a community of organisms interacting with its physical environment”?

    Answer: Ecosystem

    Ecosystem is the term for a community of organisms interacting with its physical environment.

  4. 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.

  5. Which earth and space science term matches this definition: “a large rounded body orbiting a star that does not produce energy by stellar fusion”?

    Answer: Planet

    Planet is the term for a large rounded body orbiting a star that does not produce energy by stellar fusion.

Daily round

  1. Which chemistry term matches this definition: “a positively charged ion”?

    Answer: Cation

    Cation is the term for a positively charged ion.

  2. Which earth and space science term matches this definition: “one complete orbital journey of an object around another”?

    Answer: Revolution

    Revolution is the term for one complete orbital journey of an object around another.

  3. 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.

  4. Which chemistry term matches this definition: “the substance dissolved in a solvent”?

    Answer: Solute

    Solute is the term for the substance dissolved in a solvent.

  5. Which biology term matches this definition: “an organism that makes organic food from inorganic materials and an energy source”?

    Answer: Producer

    Producer is the term for an organism that makes organic food from inorganic materials and an energy source.

Daily round

  1. Which physics term matches this definition: “the spreading of waves around obstacles or through openings”?

    Answer: Diffraction

    Diffraction is the term for the spreading of waves around obstacles or through openings.

  2. Which physics term matches this definition: “a push or pull that can change an object’s motion”?

    Answer: Force

    Force is the term for a push or pull that can change an object’s motion.

  3. Which earth and space science term matches this definition: “the curved path of one object around another under gravity”?

    Answer: Orbit

    Orbit is the term for the curved path of one object around another under gravity.

  4. Which earth and space science term matches this definition: “the change of water vapor into liquid water”?

    Answer: Condensation

    Condensation is the term for the change of water vapor into liquid water.

  5. 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.

Daily round

  1. Which earth and space science term matches this definition: “Earth’s thin outermost solid layer”?

    Answer: Crust

    Crust is the term for Earth’s thin outermost solid layer.

  2. Which physics term matches this definition: “mass divided by volume”?

    Answer: Density

    Density is the term for mass divided by volume.

  3. 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.

  4. 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.

  5. Which chemistry term matches this definition: “a process in which a species loses electrons”?

    Answer: Oxidation

    Oxidation is the term for a process in which a species loses electrons.

Daily round

  1. 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.

  2. 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.

  3. Which biology term matches this definition: “a group of similar cells working together to perform a function”?

    Answer: Tissue

    Tissue is the term for a group of similar cells working together to perform a function.

  4. Which earth and space science term matches this definition: “the envelope of gases surrounding a planet”?

    Answer: Atmosphere

    Atmosphere is the term for the envelope of gases surrounding a planet.

  5. Which physics term matches this definition: “the maximum displacement of a wave from its equilibrium position”?

    Answer: Amplitude

    Amplitude is the term for the maximum displacement of a wave from its equilibrium position.

Daily round

  1. 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.

  2. 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.

  3. 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.

  4. Which biology term matches this definition: “the transfer of pollen that enables fertilization in seed plants”?

    Answer: Pollination

    Pollination is the term for the transfer of pollen that enables fertilization in seed plants.

  5. Which biology term matches this definition: “an organism’s role and resource use within an ecosystem”?

    Answer: Ecological niche

    Ecological niche is the term for an organism’s role and resource use within an ecosystem.

Daily round

  1. Which physics term matches this definition: “a material that strongly resists the movement of electric charge”?

    Answer: Insulator

    Insulator is the term for a material that strongly resists the movement of electric charge.

  2. 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.

  3. Which chemistry term matches this definition: “a substance that accepts protons or increases hydroxide-ion concentration in water”?

    Answer: Base

    Base is the term for a substance that accepts protons or increases hydroxide-ion concentration in water.

  4. 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.

  5. 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.