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Seven days of questions and answers

Summer 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. What is transpiration?

    Answer: Loss of water vapor from plants

    Transpiration is the evaporation of water, mainly through leaf stomata.

  2. Which pollinator performs a waggle dance to communicate food direction?

    Answer: Honey bee

    Honey bees use waggle dances to indicate a resource's direction and distance.

  3. Which cooking method places food directly over radiant heat from below?

    Answer: Grilling

    Grilling cooks food quickly over a heat source, often producing browning and char marks.

  4. What is a solstice?

    Answer: An extreme of the Sun's seasonal declination

    A solstice occurs when the Sun's apparent declination reaches its northernmost or southernmost extreme.

  5. What color flag traditionally warns swimmers of dangerous surf or currents?

    Answer: Red

    A red beach flag commonly signals hazardous water conditions or restricted swimming, though local systems should always be checked.

Daily round

  1. Which direction does a sea breeze usually blow during a warm afternoon?

    Answer: From sea toward land

    Land heats faster than water, drawing cooler marine air inland as a sea breeze.

  2. Which butterfly migrates between Mexico and North America over multiple generations?

    Answer: Monarch

    The eastern monarch population completes a multigenerational migration between Mexico and northern breeding grounds.

  3. Which practice helps reduce heat risk during outdoor exercise?

    Answer: Scheduling activity for cooler hours

    Exercising in the cooler morning or evening reduces environmental heat load.

  4. Which structure helps many bony fish regulate buoyancy?

    Answer: Swim bladder

    Many bony fish vary the gas volume in a swim bladder to rise or sink with little effort.

  5. Which ancient monument aligns with the summer solstice sunrise when viewed from its center?

    Answer: Stonehenge

    Stonehenge's principal axis points toward the summer solstice sunrise and winter solstice sunset.

Daily round

  1. What electrolyte is lost in the greatest quantity through sweat?

    Answer: Sodium

    Sodium is the dominant electrolyte lost in sweat, though amounts vary by person and conditions.

  2. Which region can experience the midnight Sun during part of Northern Hemisphere summer?

    Answer: Arctic Circle

    Locations north of the Arctic Circle can have at least one day when the Sun remains above the horizon.

  3. Which ultraviolet band is the main cause of sunburn?

    Answer: UVB

    UVB radiation damages the outer skin layers and is the principal cause of sunburn.

  4. Which comet supplies the debris that creates the Perseid meteor shower?

    Answer: 109P/Swift–Tuttle

    Earth encounters particles left by comet 109P/Swift–Tuttle during the Perseids.

  5. What is the Sun's apparent position at local solar noon on a sundial?

    Answer: Its highest point of the day

    Local solar noon occurs when the Sun reaches its highest daily altitude in the sky.

Daily round

  1. Which map lines connect places of equal elevation?

    Answer: Contour lines

    Contour lines trace points at the same height above a reference level.

  2. What is the recommended general response if caught in a rip current?

    Answer: Stay calm and move parallel to shore when able

    Conserving energy and moving parallel to the beach can help a swimmer leave the narrow current before returning shoreward.

  3. What causes a meteor's visible streak?

    Answer: Hot glowing gas and vapor around incoming debris

    Atmospheric entry heats and ablates meteoroid material, producing a luminous trail.

  4. What is a drought?

    Answer: An extended period of unusually low water availability

    Drought develops when precipitation and water supplies remain below normal long enough to cause impacts.

  5. Which edible summer fruit is botanically a pepo with a hard rind?

    Answer: Watermelon

    Watermelon is a pepo, a specialized berry with a firm outer rind.

Daily round

  1. Which pigment gives most leaves their green color?

    Answer: Chlorophyll

    Chlorophyll absorbs light energy for photosynthesis and reflects green wavelengths.

  2. Which Italian frozen dessert is usually denser and served warmer than American-style ice cream?

    Answer: Gelato

    Gelato typically has less air and is served at a slightly warmer temperature than American ice cream.

  3. Which Shakespeare comedy is set partly in an enchanted forest on a summer night?

    Answer: A Midsummer Night's Dream

    A Midsummer Night's Dream intertwines lovers and fairies in a forest outside Athens.

  4. What causes a meteor's visible streak?

    Answer: Hot glowing gas and vapor around incoming debris

    Atmospheric entry heats and ablates meteoroid material, producing a luminous trail.

  5. In tennis scoring, what word represents zero points?

    Answer: Love

    Tennis uses the word love to announce a score of zero.

Daily round

  1. Around which month does the Southern Hemisphere's astronomical summer begin?

    Answer: December

    The December solstice begins astronomical summer south of the equator.

  2. Which herb is the key leaf ingredient in traditional pesto Genovese?

    Answer: Basil

    Pesto Genovese is traditionally made with fresh basil leaves.

  3. Which meteor shower usually peaks in August?

    Answer: Perseids

    The Perseid meteor shower typically reaches its annual maximum in August.

  4. What is a solstice?

    Answer: An extreme of the Sun's seasonal declination

    A solstice occurs when the Sun's apparent declination reaches its northernmost or southernmost extreme.

  5. Which pollinator performs a waggle dance to communicate food direction?

    Answer: Honey bee

    Honey bees use waggle dances to indicate a resource's direction and distance.

Daily round

  1. Which natural material forms ordinary beach sand in many continental settings?

    Answer: Quartz grains

    Durable quartz survives weathering and transport and is a major component of many sandy beaches.

  2. What is a granita?

    Answer: A coarse Sicilian ice dessert

    Granita is a Sicilian frozen dessert scraped into distinctive coarse crystals.

  3. What should a swimmer do when thunder is heard?

    Answer: Leave the water and seek shelter

    Thunder signals nearby lightning risk, so swimmers should exit immediately and enter a substantial building or hard-topped vehicle.

  4. Which storm rotates around a low-pressure center over warm tropical water?

    Answer: Tropical cyclone

    A tropical cyclone is an organized rotating storm system powered by warm ocean water.

  5. In the Atlantic basin, what is a tropical cyclone with sustained winds of at least 74 mph called?

    Answer: Hurricane

    Atlantic tropical cyclones meeting the 74 mph threshold are classified as hurricanes.