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 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 biology term matches this definition: “an organism that breaks down dead material and recycles nutrients”?

    Answer: Decomposer

    Decomposer is the term for an organism that breaks down dead material and recycles nutrients.

  3. 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.

  4. 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.

  5. 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.

Daily round

  1. Which physics term matches this definition: “energy associated with motion”?

    Answer: Kinetic energy

    Kinetic energy is the term for energy associated with motion.

  2. 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.

  3. Which chemistry term matches this definition: “the logarithmic scale commonly used to express how acidic or basic a solution is”?

    Answer: pH

    pH is the term for the logarithmic scale commonly used to express how acidic or basic a solution is.

  4. 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.

  5. Which earth and space science term matches this definition: “Earth’s central region, made mainly of iron and nickel”?

    Answer: Core

    Core is the term for Earth’s central region, made mainly of iron and nickel.

Daily round

  1. Which chemistry term matches this definition: “a substance that increases reaction rate without being consumed overall”?

    Answer: Catalyst

    Catalyst is the term for a substance that increases reaction rate without being consumed overall.

  2. 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.

  3. Which chemistry term matches this definition: “the chart that organizes chemical elements by atomic number and recurring properties”?

    Answer: Periodic table

    Periodic table is the term for the chart that organizes chemical elements by atomic number and recurring properties.

  4. Which physics term matches this definition: “electric potential difference between two points”?

    Answer: Voltage

    Voltage is the term for electric potential difference between two points.

  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 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 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.

  3. 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.

  4. Which chemistry term matches this definition: “a negatively charged ion”?

    Answer: Anion

    Anion is the term for a negatively charged ion.

  5. 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.

Daily round

  1. 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.

  2. 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.

  3. 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.

  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 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.

Daily round

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

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 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.

  3. 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.

  4. 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.

  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.